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    686 Products

    Split Lock Washers
    3D CAD models available

    Image of Product. Front orientation. Lock Washers. Split-Lock Washer.
    Stop nuts and screws from loosening due to mild vibration. As you tighten, the uneven ends bite into the nut or screw so it won't back out. While they're not as vibration resistant as other lock washers, they are a great fit for electrical panels, light fixtures, and other light duty assemblies. Split lock washers are not reusable, and they only work with fasteners that have right-hand threads.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these washers won't rust when exposed to moisture. However, they can't hold up to the harsh chemicals that 316 stainless steel can.
    Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these washers have a dark, matte coating to create a finished look. They won't rust in wet and outdoor environments, but can't hold up to harsh chemicals as well as 316 stainless steel.
    Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.
    Black-Oxide Steel—Typically chosen for their appearance, these washers have a dark, matte coating that creates a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
    Blue-Dyed Steel—These metric-sized washers have a distinctive blue color, so you can easily tell them apart from inch washers. The coating provides only minimal corrosion resistance, so these washers are best for dry environments.
    Steel—Best for dry environments since moisture will cause these washers to rust.
    Corrosion-Resistant Galvanized Steel—These washers combine the strength of steel with the rust resistance of stainless steel. They're an alternative to 18-8 stainless steel in wet and outdoor environments, but they won't hold up to salt water and chemicals.
    Super-Corrosion-Resistant Zinc-Flake-Coated Steel—With 40 times the corrosion resistance of zinc-plated steel, these withstand rust as well as 316 stainless steel. They have been tested to extreme standards, including 1,000 hours of salt spray. They are similar to Magni-coated washers.
    Aluminum—One-third the weight of steel, these washers are commonly used for assemblies that have weight limits. They're an alternative to stainless steel for rust resistance, but aren't as strong.
    Super-Corrosion-Resistant Silicon Bronze—The choice for marine environments, these washers won't rust or deteriorate when submerged in salt water. They resist corrosion as well as 316 stainless steel, but are not quite as strong.
    High-Strength Super-Corrosion-Resistant K500 Nickel—More than three times as strong as 316 stainless steel, and with superior rust resistance to withstand prolonged exposure to salt water and acids. These washers are often used in the oil and gas industries. Also known as Monel.
    For Screw
    Size
    ID
    OD
    Thk.
    For Fastener
    Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    No. 0
    0.062"0.137"0.015"____10000000000000000
    No. 0
    0.062"0.137"0.015"____1,00000000000000000
    No. 1
    0.075"0.150"0.015"____1000000000000000
    No. 1
    0.075"0.150"0.015"____1,00000000000000000
    No. 2
    0.094"0.172"0.020"__ASME B18.21.11000000000000000
    No. 2
    0.094"0.172"0.020"__ASME B18.21.11,00000000000000000
    No. 3
    0.107"0.195"0.025"__ASME B18.21.11000000000000000
    No. 3
    0.107"0.195"0.025"__ASME B18.21.11,00000000000000000
    No. 4
    0.120"0.209"0.025"__ASME B18.21.11000000000000000
    No. 4
    0.120"0.209"0.025"__ASME B18.21.11,00000000000000000
    No. 4
    0.120"0.223"0.031"__ASME B18.21.11000000000000000
    No. 5
    0.133"0.236"0.031"__ASME B18.21.11000000000000000
    No. 5
    0.133"0.236"0.031"__ASME B18.21.11,00000000000000000
    No. 6
    0.148"0.250"0.031"__ASME B18.21.11000000000000000
    No. 6
    0.148"0.250"0.031"__ASME B18.21.11,00000000000000000
    No. 6
    0.148"0.266"0.040"__ASME B18.21.11000000000000000
    No. 8
    0.174"0.293"0.040"__ASME B18.21.11000000000000000
    No. 8
    0.174"0.293"0.040"__ASME B18.21.11,00000000000000000
    No. 8
    0.174"0.307"0.047"__ASME B18.21.11000000000000000
    No. 10
    0.200"0.334"0.047"__ASME B18.21.11000000000000000
    No. 10
    0.200"0.334"0.047"__ASME B18.21.11,00000000000000000
    No. 10
    0.200"0.350"0.056"__ASME B18.21.11000000000000000
    No. 12
    0.227"0.377"0.056"__ASME B18.21.11000000000000000
    1/4"
    0.260"0.487"0.062"__ASME B18.21.11000000000000000
    1/4"
    0.260"0.489"0.077"__ASME B18.21.1500000000000000
    5/16"
    0.322"0.583"0.078"__ASME B18.21.11000000000000000
    5/16"
    0.322"0.594"0.097"__ASME B18.21.15000000000000000
    3/8"
    0.385"0.680"0.094"__ASME B18.21.11000000000000000
    3/8"
    0.385"0.688"0.115"__ASME B18.21.1250000000000000
    7/16"
    0.450"0.776"0.109"__ASME B18.21.1500000000000000
    1/2"
    0.512"0.869"0.125"__ASME B18.21.1500000000000000
    1/2"
    0.512"0.879"0.151"__ASME B18.21.1100000000000000
    9/16"
    0.574"0.965"0.141"__ASME B18.21.1250000000000000
    5/8"
    0.641"1.073"0.156"__ASME B18.21.1250000000000000
    5/8"
    0.641"1.087"0.189"__ASME B18.21.150000000000000
    3/4"
    0.766"1.265"0.188"__ASME B18.21.1100000000000000
    3/4"
    0.766"1.285"0.226"__ASME B18.21.110000000000000
    7/8"
    0.894"1.459"0.219"__ASME B18.21.150000000000000
    1"
    1.024"1.656"0.250"__ASME B18.21.150000000000000
    1 1/8"
    1.153"1.847"0.281"__ASME B18.21.110000000000000
    1 1/4"
    1.280"2.036"0.312"__ASME B18.21.110000000000000
    1 3/8"
    1.408"2.219"0.344"__ASME B18.21.110000000000000
    1 1/2"
    1.534"2.419"0.375"__ASME B18.21.110000000000000
    1 5/8"
    1.663"2.553"0.389"__ASME B18.21.110000000000000
    1 3/4"
    1.789"2.679"0.389"__ASME B18.21.1100000000000000
    1 7/8"
    1.914"2.811"0.422"__ASME B18.21.1100000000000000
    2"
    2.039"2.936"0.422"__ASME B18.21.1100000000000000
    2 1/4"
    2.293"3.221"0.440"__ASME B18.21.1100000000000000
    2 1/2"
    2.543"3.471"0.440"__ASME B18.21.1100000000000000
    M2
    2.4 mm4.4 mm0.4 mm to 0.6 mm__DIN 127B1000000000000000
    M2.5
    2.9 mm5.1 mm0.5 mm to 0.7 mm__DIN 127B1000000000000000
    M2.6
    3.0 mm5.2 mm0.5 mm to 0.7 mm__DIN 127B1000000000000000
    M3
    3.4 mm6.2 mm0.7 mm to 0.9 mm__DIN 127B1000000000000000
    M3.5
    3.9 mm6.7 mm0.7 mm to 0.9 mm__DIN 127B1000000000000000
    M4
    4.4 mm7.6 mm0.8 mm to 1.0 mm__DIN 127B1000000000000000
    M5
    5.4 mm9.2 mm1.1 mm to 1.3 mm__DIN 127B1000000000000000
    M6
    6.5 mm11.8 mm1.5 mm to 1.7 mm__DIN 127B1000000000000000
    M7
    7.5 mm12.8 mm1.5 mm to 1.7 mm__DIN 127B500000000000000
    M8
    8.5 mm14.8 mm1.9 mm to 2.1 mm__DIN 127B1000000000000000
    M10
    10.7 mm18.1 mm2.0 mm to 2.4 mm__DIN 127B10000000000000000
    M12
    12.7 mm21.1 mm2.3 mm to 2.7 mm__DIN 127B5000000000000000
    M14
    14.7 mm24.1 mm2.8 mm to 3.2 mm__DIN 127B2500000000000000
    M16
    17.0 mm27.4 mm3.3 mm to 3.7 mm__DIN 127B2500000000000000
    M18
    19.0 mm29.4 mm3.3 mm to 3.7 mm__DIN 127B100000000000000
    M20
    21.2 mm33.6 mm3.8 mm to 4.2 mm__DIN 127B100000000000000
    M22
    22.5 mm35.9 mm3.8 mm to 4.2 mm__DIN 127B50000000000000
    M24
    25.5 mm40.0 mm4.8 mm to 5.2 mm__DIN 127B1000000000000000
    M27
    27.5 mm43.0 mm4.8 mm to 5.2 mm__DIN 127B500000000000000
    M30
    31.7 mm48.2 mm5.8 mm to 6.2 mm__DIN 127B10000000000000
    M36
    37.7 mm58.2 mm5.8 mm to 6.2 mm__DIN 127B10000000000000
     
    Black-Oxide 18-8 Stainless Steel
    No. 2
    0.094"0.172"0.020"__ASME B18.21.11000000000000000
    No. 4
    0.120"0.209"0.025"__ASME B18.21.11000000000000000
    No. 6
    0.148"0.250"0.031"__ASME B18.21.11000000000000000
    No. 8
    0.174"0.293"0.040"__ASME B18.21.11000000000000000
    No. 10
    0.200"0.334"0.047"__ASME B18.21.11000000000000000
    1/4"
    0.260"0.487"0.062"__ASME B18.21.11000000000000000
    5/16"
    0.322"0.583"0.078"__ASME B18.21.11000000000000000
    3/8"
    0.385"0.680"0.094"__ASME B18.21.1500000000000000
    1/2"
    0.512"0.869"0.125"__ASME B18.21.1250000000000000
    M2
    2.4 mm4.4 mm0.4 mm to 0.6 mm__DIN 127B100000000000000
    M2.5
    2.9 mm5.1 mm0.5 mm to 0.7 mm__DIN 127B100000000000000
    M3
    3.4 mm6.2 mm0.7 mm to 0.9 mm__DIN 127B100000000000000
    M5
    5.4 mm9.2 mm1.1 mm to 1.3 mm__DIN 127B100000000000000
    M6
    6.5 mm11.8 mm1.5 mm to 1.7 mm__DIN 127B100000000000000
    M8
    8.5 mm14.8 mm1.9 mm to 2.1 mm__DIN 127B100000000000000
    M10
    10.7 mm18.1 mm2.0 mm to 2.4 mm__DIN 127B100000000000000
    M12
    12.7 mm21.1 mm2.3 mm to 2.7 mm__DIN 127B100000000000000
    M16
    17.0 mm27.4 mm3.3 mm to 3.7 mm__DIN 127B100000000000000
    M20
    21.2 mm33.6 mm3.8 mm to 4.2 mm__DIN 127B1000000000000000
     
    Super-Corrosion-Resistant 316 Stainless Steel
    No. 0
    0.062"0.137"0.015"____1000000000000000
    No. 2
    0.094"0.172"0.020"__ASME B18.21.11000000000000000
    No. 2
    0.094"0.172"0.020"__ASME B18.21.11,00000000000000000
    No. 3
    0.107"0.195"0.025"__ASME B18.21.11000000000000000
    No. 4
    0.120"0.209"0.025"__ASME B18.21.11000000000000000
    No. 4
    0.120"0.209"0.025"__ASME B18.21.11,00000000000000000
    No. 5
    0.133"0.236"0.031"__ASME B18.21.11000000000000000
    No. 6
    0.148"0.250"0.031"__ASME B18.21.11000000000000000
    No. 6
    0.148"0.250"0.031"__ASME B18.21.11,00000000000000000
    No. 8
    0.174"0.293"0.040"__ASME B18.21.11000000000000000
    No. 8
    0.174"0.293"0.040"__ASME B18.21.11,00000000000000000
    No. 10
    0.200"0.334"0.047"__ASME B18.21.11000000000000000
    No. 10
    0.200"0.334"0.047"__ASME B18.21.11,00000000000000000
    No. 12
    0.227"0.377"0.056"__ASME B18.21.11000000000000000
    1/4"
    0.260"0.487"0.062"__ASME B18.21.11000000000000000
    5/16"
    0.322"0.583"0.078"__ASME B18.21.110000000000000000
    3/8"
    0.385"0.680"0.094"__ASME B18.21.1500000000000000
    7/16"
    0.450"0.776"0.109"__ASME B18.21.1250000000000000
    1/2"
    0.512"0.869"0.125"__ASME B18.21.1250000000000000
    9/16"
    0.574"0.965"0.141"__ASME B18.21.12500000000000000
    5/8"
    0.641"1.073"0.156"__ASME B18.21.1100000000000000
    3/4"
    0.766"1.265"0.188"__ASME B18.21.11000000000000000
    7/8"
    0.894"1.459"0.219"__ASME B18.21.1500000000000000
    1"
    1.024"1.656"0.250"__ASME B18.21.1500000000000000
    1 1/8"
    1.153"1.847"0.281"__ASME B18.21.110000000000000
    1 1/4"
    1.280"2.036"0.312"__ASME B18.21.110000000000000
    1 3/8"
    1.408"2.219"0.344"__ASME B18.21.110000000000000
    1 1/2"
    1.534"2.419"0.375"__ASME B18.21.1100000000000000
    1 5/8"
    1.663"2.553"0.389"__ASME B18.21.1100000000000000
    1 3/4"
    1.789"2.679"0.389"__ASME B18.21.1100000000000000
    2"
    2.039"2.936"0.422"__ASME B18.21.1100000000000000
    2 1/4"
    2.293"3.221"0.440"__ASME B18.21.1100000000000000
    M2
    2.4 mm4.4 mm0.4 mm to 0.6 mm__DIN 127B1000000000000000
    M2.5
    2.9 mm5.1 mm0.5 mm to 0.7 mm__DIN 127B1000000000000000
    M3
    3.4 mm6.2 mm0.7 mm to 0.9 mm__DIN 127B1000000000000000
    M3.5
    3.9 mm6.7 mm0.7 mm to 0.9 mm__DIN 127B1000000000000000
    M4
    4.4 mm7.6 mm0.8 mm to 1.0 mm__DIN 127B1000000000000000
    M5
    5.4 mm9.2 mm1.1 mm to 1.3 mm__DIN 127B1000000000000000
    M6
    6.5 mm11.8 mm1.5 mm to 1.7 mm__DIN 127B1000000000000000
    M8
    8.5 mm14.8 mm1.9 mm to 2.1 mm__DIN 127B1000000000000000
    M10
    10.7 mm18.1 mm2.0 mm to 2.4 mm__DIN 127B500000000000000
    M12
    12.7 mm21.1 mm2.3 mm to 2.7 mm__DIN 127B5000000000000000
    M14
    14.7 mm24.1 mm2.8 mm to 3.2 mm__DIN 127B250000000000000
    M16
    17.0 mm27.4 mm3.3 mm to 3.7 mm__DIN 127B100000000000000
    M18
    19.0 mm29.4 mm3.3 mm to 3.7 mm__DIN 127B100000000000000
    M20
    21.2 mm33.6 mm3.8 mm to 4.2 mm__DIN 127B100000000000000
    M24
    25.5 mm40.0 mm4.8 mm to 5.2 mm__DIN 127B50000000000000
    M30
    31.7 mm48.2 mm5.8 mm to 6.2 mm__DIN 127B10000000000000
     
    Zinc-Plated Steel
    No. 2
    0.094"0.172"0.020"__ASME B18.21.11000000000000000
    No. 3
    0.107"0.195"0.025"__ASME B18.21.11000000000000000
    No. 3
    0.107"0.195"0.025"__ASME B18.21.11,00000000000000000
    No. 4
    0.120"0.209"0.025"__ASME B18.21.11000000000000000
    No. 4
    0.120"0.209"0.025"__ASME B18.21.11,00000000000000000
    No. 5
    0.133"0.236"0.031"__ASME B18.21.11000000000000000
    No. 5
    0.133"0.236"0.031"__ASME B18.21.11,0000000000000000
    No. 6
    0.148"0.250"0.031"__ASME B18.21.11000000000000000
    No. 6
    0.148"0.250"0.031"__ASME B18.21.11,0000000000000000
    No. 8
    0.174"0.293"0.040"__ASME B18.21.11000000000000000
    No. 8
    0.174"0.293"0.040"__ASME B18.21.11,0000000000000000
    No. 10
    0.200"0.334"0.047"__ASME B18.21.11000000000000000
    No. 10
    0.200"0.334"0.047"__ASME B18.21.11,00000000000000000
    No. 12
    0.227"0.377"0.056"__ASME B18.21.11000000000000000
    No. 12
    0.227"0.377"0.056"__ASME B18.21.11,00000000000000000
    1/4"
    0.260"0.487"0.062"__ASME B18.21.11000000000000000
    1/4"
    0.260"0.487"0.062"__ASME B18.21.11,00000000000000000
    1/4"
    0.272"0.489"0.062"__ASME B18.21.110000000000000000
    5/16"
    0.322"0.583"0.078"__ASME B18.21.11000000000000000
    5/16"
    0.322"0.583"0.078"__ASME B18.21.11,00000000000000000
    3/8"
    0.385"0.680"0.094"__ASME B18.21.11000000000000000
    3/8"
    0.385"0.680"0.094"__ASME B18.21.11,00000000000000000
    3/8"
    0.397"0.688"0.094"__ASME B18.21.15000000000000000
    7/16"
    0.450"0.776"0.109"__ASME B18.21.11000000000000000
    7/16"
    0.450"0.776"0.109"__ASME B18.21.11,00000000000000000
    1/2"
    0.512"0.869"0.125"__ASME B18.21.110000000000000000
    1/2"
    0.512"0.869"0.125"__ASME B18.21.11,00000000000000000
    1/2"
    0.522"0.879"0.125"__ASME B18.21.12500000000000000
    9/16"
    0.574"0.965"0.141"__ASME B18.21.110000000000000000
    5/8"
    0.641"1.073"0.156"__ASME B18.21.1500000000000000
    3/4"
    0.766"1.265"0.188"__ASME B18.21.15000000000000000
    7/8"
    0.894"1.459"0.219"__ASME B18.21.12500000000000000
    1"
    1.024"1.656"0.250"__ASME B18.21.1100000000000000
    1 1/8"
    1.153"1.847"0.281"__ASME B18.21.11000000000000000
    1 1/4"
    1.280"2.036"0.312"__ASME B18.21.1500000000000000
    1 3/8"
    1.408"2.219"0.344"__ASME B18.21.1500000000000000
    1 1/2"
    1.534"2.419"0.375"__ASME B18.21.110000000000000
    1 3/4"
    1.789"2.679"0.389"__ASME B18.21.110000000000000
    2"
    2.039"2.936"0.422"__ASME B18.21.110000000000000
    M2
    2.4 mm4.4 mm0.4 mm to 0.6 mm__DIN 127B1000000000000000
    M2.5
    2.9 mm5.1 mm0.5 mm to 0.7 mm__DIN 127B1000000000000000
    M3
    3.4 mm6.2 mm0.7 mm to 0.9 mm__DIN 127B1000000000000000
    M3.5
    3.6 mm6.7 mm0.7 mm to 0.9 mm__DIN 127B1000000000000000
    M4
    4.4 mm7.6 mm0.8 mm to 1.0 mm__DIN 127B1000000000000000
    M5
    5.4 mm9.2 mm1.1 mm to 1.3 mm__DIN 127B1000000000000000
    M6
    6.5 mm11.8 mm1.5 mm to 1.7 mm__DIN 127B1000000000000000
    M7
    7.5 mm12.8 mm1.5 mm to 1.7 mm__DIN 127B1000000000000000
    M8
    8.5 mm14.8 mm1.9 mm to 2.1 mm__DIN 127B1000000000000000
    M10
    10.7 mm18.1 mm2.0 mm to 2.4 mm__DIN 127B1000000000000000
    M12
    12.7 mm21.1 mm2.3 mm to 2.7 mm__DIN 127B10000000000000000
    M14
    14.7 mm24.1 mm2.8 mm to 3.2 mm__DIN 127B10000000000000000
    M16
    17.0 mm27.4 mm3.3 mm to 3.7 mm__DIN 127B5000000000000000
    M18
    19.0 mm29.4 mm3.3 mm to 3.7 mm__DIN 127B2500000000000000
    M20
    21.2 mm33.6 mm3.8 mm to 4.2 mm__DIN 127B2500000000000000
    M22
    22.5 mm35.9 mm3.8 mm to 4.2 mm__DIN 127B1000000000000000
    M24
    25.5 mm40.0 mm4.8 mm to 5.2 mm__DIN 127B2500000000000000
    M27
    28.5 mm43.0 mm4.8 mm to 5.2 mm__DIN 127B1000000000000000
    M30
    31.7 mm48.2 mm5.8 mm to 6.2 mm__DIN 127B1000000000000000
    M33
    33.5 mm55.2 mm5.8 mm to 6.2 mm__DIN 127B500000000000000
    M36
    37.7 mm58.2 mm5.8 mm to 6.2 mm__DIN 127B500000000000000
    M42
    43.7 mm68.2 mm6.8 mm to 7.2 mm__DIN 127B100000000000000
    M48
    50.5 mm75.0 mm6.8 mm to 7.2 mm__DIN 127B100000000000000
     
    Zinc-Yellow-Chromate-Plated Steel
    1/4"
    0.260"0.487"0.062"SAE Grade 8
    ASME B18.21.11000000000000000
    5/16"
    0.322"0.583"0.078"SAE Grade 8
    ASME B18.21.11000000000000000
    3/8"
    0.385"0.680"0.094"SAE Grade 8
    ASME B18.21.11000000000000000
    7/16"
    0.450"0.776"0.109"SAE Grade 8
    ASME B18.21.110000000000000000
    1/2"
    0.512"0.869"0.125"SAE Grade 8
    ASME B18.21.110000000000000000
    9/16"
    0.574"0.965"0.141"SAE Grade 8
    ASME B18.21.15000000000000000
    5/8"
    0.641"1.073"0.156"SAE Grade 8
    ASME B18.21.15000000000000000
    3/4"
    0.766"1.265"0.188"SAE Grade 8
    ASME B18.21.12500000000000000
    7/8"
    0.894"1.459"0.219"SAE Grade 8
    ASME B18.21.1100000000000000
    1"
    1.024"1.656"0.250"SAE Grade 8
    ASME B18.21.11000000000000000
    1 1/8"
    1.153"1.903"0.345"SAE Grade 8
    ASME B18.21.1500000000000000
    1 1/4"
    1.280"2.104"0.384"SAE Grade 8
    ASME B18.21.110000000000000
    1 3/8"
    1.408"2.301"0.422"SAE Grade 8
    ASME B18.21.110000000000000
    1 1/2"
    1.534"2.491"0.458"SAE Grade 8
    ASME B18.21.1100000000000000
    2"
    2.039"3.144"0.496"SAE Grade 8
    ASME B18.21.1100000000000000
    M3
    3.4 mm6.2 mm0.7 mm to 0.9 mm__DIN 127B1000000000000000
    M4
    4.4 mm7.6 mm0.8 mm to 1.0 mm__DIN 127B1000000000000000
    M5
    5.4 mm9.2 mm1.1 mm to 1.3 mm__DIN 127B1000000000000000
    M6
    6.5 mm11.8 mm1.5 mm to 1.7 mm__DIN 127B1000000000000000
    M8
    8.5 mm14.8 mm1.9 mm to 2.1 mm__DIN 127B1000000000000000
    M10
    10.7 mm18.1 mm2.0 mm to 2.4 mm__DIN 127B10000000000000000
    M12
    12.7 mm21.1 mm2.3 mm to 2.7 mm__DIN 127B500000000000000
    M14
    14.7 mm24.1 mm2.8 mm to 3.2 mm__DIN 127B5000000000000000
    M16
    17.0 mm27.4 mm3.3 mm to 3.7 mm__DIN 127B250000000000000
    M18
    19.0 mm29.4 mm3.3 mm to 3.7 mm__DIN 127B2500000000000000
    M20
    21.2 mm33.6 mm3.8 mm to 4.2 mm__DIN 127B100000000000000
    M24
    25.5 mm40.0 mm4.8 mm to 5.2 mm__DIN 127B100000000000000
    M30
    31.7 mm48.2 mm5.8 mm to 6.2 mm__DIN 127B500000000000000
     
    Black-Oxide Steel
    1/4"
    0.260"0.487"0.062"__ASME B18.21.150000000000000
    5/16"
    0.322"0.583"0.078"__ASME B18.21.150000000000000
    3/8"
    0.385"0.680"0.094"__ASME B18.21.125000000000000
    7/16"
    0.450"0.776"0.109"__ASME B18.21.125000000000000
    1/2"
    0.512"0.869"0.125"__ASME B18.21.110000000000000
    9/16"
    0.574"0.965"0.141"__ASME B18.21.110000000000000
    5/8"
    0.641"1.073"0.156"__ASME B18.21.110000000000000
    3/4"
    0.766"1.265"0.188"__ASME B18.21.15000000000000
    7/8"
    0.894"1.459"0.219"__ASME B18.21.150000000000000
    1"
    1.024"1.656"0.250"__ASME B18.21.11000000000000
    1 1/8"
    1.153"1.847"0.281"__ASME B18.21.11000000000000
    1 1/4"
    1.280"2.036"0.312"__ASME B18.21.11000000000000
    1 3/8"
    1.408"2.219"0.344"__ASME B18.21.110000000000000
    1 1/2"
    1.534"2.419"0.375"__ASME B18.21.110000000000000
    1 3/4"
    1.789"2.679"0.389"__ASME B18.21.110000000000000
    2"
    2.039"2.936"0.422"__ASME B18.21.110000000000000
    M6
    6.5 mm11.8 mm1.5 mm to 1.7 mm__DIN 127B10000000000000000
    M8
    8.5 mm14.8 mm1.9 mm to 2.1 mm__DIN 127B10000000000000000
    M10
    10.7 mm18.1 mm2.0 mm to 2.4 mm__DIN 127B500000000000000
    M16
    17.0 mm27.4 mm3.3 mm to 3.7 mm__DIN 127B250000000000000
     
    Blue-Dyed Steel
    M3
    3.4 mm6.2 mm0.7 mm to 0.9 mm__DIN 127B1000000000000000
    M4
    4.5 mm7.6 mm0.8 mm to 1.0 mm__DIN 127B1000000000000000
    M5
    5.4 mm9.2 mm1.1 mm to 1.3 mm__DIN 127B1000000000000000
    M6
    6.2 mm12.1 mm2.0 mm__ASME B18.21.2M10000000000000000
    M6
    6.5 mm11.8 mm1.5 mm to 1.7 mm__DIN 127B500000000000000
    M8
    8.2 mm15.2 mm2.5 mm__ASME B18.21.2M1000000000000000
    M8
    8.5 mm14.8 mm1.9 mm to 2.1 mm__DIN 127B500000000000000
    M10
    10.2 mm18.0 mm2.9 mm__ASME B18.21.2M500000000000000
    M10
    10.7 mm18.1 mm2.0 mm to 2.4 mm__DIN 127B250000000000000
    M12
    12.3 mm21.7 mm3.8 mm__ASME B18.21.2M10000000000000000
    M12
    12.7 mm21.1 mm2.3 mm to 2.7 mm__DIN 127B250000000000000
    M16
    16.4 mm27.9 mm4.8 mm__ASME B18.21.2M2500000000000000
    M16
    17.0 mm27.4 mm3.3 mm to 3.7 mm__DIN 127B2500000000000000
    M20
    20.5 mm33.8 mm5.7 mm__ASME B18.21.2M100000000000000
    M20
    21.2 mm33.6 mm3.8 mm to 4.2 mm__DIN 127B100000000000000
    M24
    24.5 mm40.7 mm7.2 mm__ASME B18.21.2M1000000000000000
     
    Steel
    No. 5
    0.133"0.236"0.031"__ASME B18.21.11000000000000000
    No. 6
    0.148"0.250"0.031"__ASME B18.21.11,0000000000000000
    No. 8
    0.174"0.293"0.040"__ASME B18.21.11,0000000000000000
    No. 10
    0.200"0.334"0.047"__ASME B18.21.11,00000000000000000
    No. 12
    0.227"0.377"0.056"__ASME B18.21.11,00000000000000000
    1/4"
    0.260"0.487"0.062"__ASME B18.21.11000000000000000
    1/4"
    0.260"0.487"0.062"__ASME B18.21.11,00000000000000000
    5/16"
    0.322"0.583"0.078"__ASME B18.21.11000000000000000
    5/16"
    0.322"0.583"0.078"__ASME B18.21.11,00000000000000000
    3/8"
    0.385"0.680"0.094"__ASME B18.21.11000000000000000
    3/8"
    0.385"0.680"0.094"__ASME B18.21.11,00000000000000000
    7/16"
    0.450"0.776"0.109"__ASME B18.21.11000000000000000
    1/2"
    0.512"0.869"0.125"__ASME B18.21.110000000000000000
    1/2"
    0.512"0.869"0.125"__ASME B18.21.11,000000000000000000
    9/16"
    0.574"0.965"0.141"__ASME B18.21.1500000000000000
    5/8"
    0.641"1.073"0.156"__ASME B18.21.15000000000000000
    5/8"
    0.641"1.073"0.156"__ASME B18.21.150000000000000000
    3/4"
    0.766"1.265"0.188"__ASME B18.21.15000000000000000
    3/4"
    0.766"1.265"0.188"__ASME B18.21.1500000000000000000
    7/8"
    0.894"1.459"0.219"__ASME B18.21.12500000000000000
    1"
    1.024"1.656"0.250"__ASME B18.21.1100000000000000
    1 1/8"
    1.153"1.847"0.281"__ASME B18.21.11000000000000000
    1 1/4"
    1.280"2.036"0.312"__ASME B18.21.11000000000000000
    1 1/2"
    1.534"2.419"0.375"__ASME B18.21.1500000000000000
    1 5/8"
    1.663"2.553"0.389"__ASME B18.21.110000000000000
    1 3/4"
    1.789"2.679"0.389"__ASME B18.21.110000000000000
    2"
    2.039"2.936"0.422"__ASME B18.21.110000000000000
    M2
    2.4 mm4.4 mm0.4 mm to 0.6 mm__DIN 127B1000000000000000
    M2.5
    2.9 mm5.1 mm0.5 mm to 0.7 mm__DIN 127B1000000000000000
    M3
    3.4 mm6.2 mm0.7 mm to 0.9 mm__DIN 127B1000000000000000
    M3.5
    3.9 mm6.7 mm0.7 mm to 0.9 mm__DIN 127B1000000000000000
    M4
    4.4 mm7.6 mm0.8 mm to 1.0 mm__DIN 127B1000000000000000
    M5
    5.4 mm9.2 mm1.1 mm to 1.3 mm__DIN 127B1000000000000000
    M6
    6.5 mm11.8 mm1.5 mm to 1.7 mm__DIN 127B1000000000000000
    M8
    8.5 mm14.8 mm1.9 mm to 2.1 mm__DIN 127B1000000000000000
    M10
    10.7 mm18.1 mm2.0 mm to 2.4 mm__DIN 127B1000000000000000
    M12
    12.7 mm21.1 mm2.3 mm to 2.7 mm__DIN 127B1000000000000000
    M14
    14.7 mm24.1 mm2.8 mm to 3.2 mm__DIN 127B10000000000000000
    M16
    17.0 mm27.4 mm3.3 mm to 3.7 mm__DIN 127B5000000000000000
    M18
    19.0 mm29.4 mm3.3 mm to 3.7 mm__DIN 127B5000000000000000
    M20
    21.2 mm33.6 mm3.8 mm to 4.2 mm__DIN 127B2500000000000000
    M24
    25.5 mm40.0 mm4.8 mm to 5.2 mm__DIN 127B2500000000000000
    M30
    31.7 mm48.2 mm5.8 mm to 6.2 mm__DIN 127B500000000000000
    M36
    37.7 mm58.2 mm5.8 mm to 6.2 mm__DIN 127B10000000000000
     
    Corrosion-Resistant Galvanized Steel
    1/4"
    0.260"0.487"0.062"__ASME B18.21.11000000000000000
    5/16"
    0.322"0.583"0.078"__ASME B18.21.11000000000000000
    3/8"
    0.385"0.680"0.094"__ASME B18.21.11000000000000000
    7/16"
    0.450"0.776"0.109"__ASME B18.21.1250000000000000
    1/2"
    0.512"0.869"0.125"__ASME B18.21.1500000000000000
    5/8"
    0.641"1.073"0.156"__ASME B18.21.1250000000000000
    3/4"
    0.766"1.265"0.188"__ASME B18.21.12500000000000000
    7/8"
    0.894"1.459"0.219"__ASME B18.21.1100000000000000
    1"
    1.024"1.656"0.250"__ASME B18.21.1100000000000000
    1 1/4"
    1.280"2.036"0.312"__ASME B18.21.1500000000000000
    M6
    6.5 mm11.8 mm1.5 mm to 1.7 mm__DIN 127B500000000000000
    M8
    8.5 mm14.8 mm1.9 mm to 2.1 mm__DIN 127B5000000000000000
    M10
    10.7 mm18.1 mm2.0 mm to 2.4 mm__DIN 127B5000000000000000
    M12
    12.7 mm21.1 mm2.3 mm to 2.7 mm__DIN 127B250000000000000
    M16
    17.0 mm27.4 mm3.3 mm to 3.7 mm__DIN 127B100000000000000
    M20
    21.2 mm33.6 mm3.8 mm to 4.2 mm__DIN 127B10000000000000
     
    Super-Corrosion-Resistant Zinc-Flake-Coated Steel
    No. 10
    0.200"0.334"0.047"__ASME B18.21.125000000000000
    1/4"
    0.260"0.487"0.062"__ASME B18.21.125000000000000
    5/16"
    0.322"0.583"0.078"__ASME B18.21.125000000000000
    3/8"
    0.385"0.680"0.094"__ASME B18.21.110000000000000
    7/16"
    0.450"0.776"0.109"__ASME B18.21.110000000000000
    1/2"
    0.512"0.869"0.125"__ASME B18.21.110000000000000
    9/16"
    0.574"0.965"0.141"__ASME B18.21.15000000000000
    5/8"
    0.641"1.073"0.156"__ASME B18.21.15000000000000
    3/4"
    0.766"1.265"0.188"__ASME B18.21.11000000000000
    7/8"
    0.894"1.459"0.219"__ASME B18.21.11000000000000
    1"
    1.024"1.656"0.250"__ASME B18.21.11000000000000
    1 1/4"
    1.280"2.036"0.312"__ASME B18.21.110000000000000
    M6
    6.5 mm11.8 mm1.5 mm to 1.7 mm__DIN 127B250000000000000
    M8
    8.5 mm14.8 mm1.9 mm to 2.1 mm__DIN 127B2500000000000000
    M10
    10.7 mm18.1 mm2.0 mm to 2.4 mm__DIN 127B2500000000000000
     
    Aluminum
    No. 6
    0.148"0.250"0.031"__ASME B18.21.11000000000000000
    No. 8
    0.174"0.293"0.040"__ASME B18.21.11000000000000000
    No. 10
    0.200"0.334"0.047"__ASME B18.21.11000000000000000
    1/4"
    0.260"0.487"0.062"__ASME B18.21.110000000000000000
    5/16"
    0.322"0.583"0.078"__ASME B18.21.1500000000000000
    3/8"
    0.385"0.680"0.094"__ASME B18.21.15000000000000000
    1/2"
    0.512"0.869"0.125"__ASME B18.21.1100000000000000
    5/8"
    0.641"1.073"0.156"__ASME B18.21.1100000000000000
    3/4"
    0.766"1.265"0.188"__ASME B18.21.11000000000000000
     
    Super-Corrosion-Resistant Silicon Bronze
    No. 2
    0.094"0.172"0.020"__ASME B18.21.11000000000000000
    No. 3
    0.107"0.195"0.025"__ASME B18.21.11000000000000000
    No. 4
    0.120"0.209"0.025"__ASME B18.21.11000000000000000
    No. 4
    0.120"0.209"0.025"__ASME B18.21.11,00000000000000000
    No. 6
    0.148"0.250"0.031"__ASME B18.21.11000000000000000
    No. 6
    0.148"0.250"0.031"__ASME B18.21.11,00000000000000000
    No. 8
    0.174"0.293"0.040"__ASME B18.21.11000000000000000
    No. 8
    0.174"0.293"0.040"__ASME B18.21.11,00000000000000000
    No. 10
    0.200"0.334"0.047"__ASME B18.21.11000000000000000
    No. 12
    0.227"0.377"0.056"__ASME B18.21.11000000000000000
    1/4"
    0.260"0.487"0.062"__ASME B18.21.110000000000000000
    5/16"
    0.322"0.583"0.078"__ASME B18.21.15000000000000000
    3/8"
    0.385"0.680"0.094"__ASME B18.21.12500000000000000
    7/16"
    0.450"0.776"0.109"__ASME B18.21.1100000000000000
    1/2"
    0.512"0.869"0.125"__ASME B18.21.1100000000000000
    5/8"
    0.641"1.073"0.156"__ASME B18.21.150000000000000
    3/4"
    0.766"1.265"0.188"__ASME B18.21.1500000000000000
    1"
    1.024"1.656"0.250"__ASME B18.21.1500000000000000
    M3
    3.4 mm6.2 mm0.7 mm to 0.9 mm__DIN 127B10000000000000000
    M4
    4.4 mm7.6 mm0.8 mm to 1.0 mm__DIN 127B10000000000000000
    M5
    5.4 mm9.2 mm1.1 mm to 1.3 mm__DIN 127B10000000000000000
    M6
    6.5 mm11.8 mm1.5 mm to 1.7 mm__DIN 127B5000000000000000
    M8
    8.5 mm14.8 mm1.9 mm to 2.1 mm__DIN 127B2500000000000000
    M10
    10.7 mm18.1 mm2.0 mm to 2.4 mm__DIN 127B100000000000000
     
    High-Strength Super-Corrosion-Resistant K500 Nickel
    1/4"
    0.260"0.487"0.062" to 0.077"__ASME B18.21.11000000000000000
    5/16"
    0.322"0.583"0.078" to 0.097"__ASME B18.21.1500000000000000
    3/8"
    0.385"0.680"0.094" to 0.115"__ASME B18.21.1500000000000000
    1/2"
    0.512"0.869"0.125" to 0.151"__ASME B18.21.110000000000000
    5/8"
    0.641"1.073"0.156" to 0.189"__ASME B18.21.1100000000000000
     

    Mil. Spec. Split Lock Washers
    3D CAD models available

    Image of Product. Front orientation. Lock Washers. Mil. Spec., Split-Lock Washer.
    These washers are manufactured and tested to strict U.S. military standards for material and construction. As you tighten, the uneven ends bite into the nut or screw so it won't loosen due to mild vibration. While they don't hold as tightly as other lock washers, they are a great fit for electrical panels, light fixtures, and other light duty assemblies. Split lock washers are not reusable, and they only work with fasteners that have right-hand threads.
    Passivated 18-8 Stainless Steel—The choice for wet and outdoor environments, these washers won't rust when exposed to moisture. However, they can't hold up to the harsh chemicals that 316 stainless steel can.
    Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these washers have a dark, matte coating to create a finished look. They won't rust in wet and outdoor environments, but can't hold up to harsh chemicals as well as 316 stainless steel.
    Super-Corrosion-Resistant Passivated 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Super-Corrosion-Resistant Black-Oxide 316 Stainless Steel—Combines a finished appearance with the rust resistance of 316 stainless steel. Even if the coating wears off, these washers will hold up in just about any environment, including salt water and most chemicals.
    Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.
    Corrosion-Resistant Cadmium-Plated Steel—The finish creates a better barrier against rust than zinc plating for use in wet and outdoor environments.
    For Screw
    Size
    ID
    OD
    Thk.
    Mil. Spec.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Passivated 18-8 Stainless Steel
    5/16"
    0.314"0.583"0.078"MS35338-140ASME B18.21.12500000000000000
    3/8"
    0.377"0.680"0.094"MS35338-141ASME B18.21.12500000000000000
    7/16"
    0.440"0.776"0.109"MS35338-142ASME B18.21.1100000000000000
    1/2"
    0.502"0.869"0.125"MS35338-143ASME B18.21.1100000000000000
    9/16"
    0.564"0.965"0.141"MS35338-144ASME B18.21.1100000000000000
    5/8"
    0.628"1.073"0.156"MS35338-145ASME B18.21.11000000000000000
    3/4"
    0.753"1.265"0.188"MS35338-146ASME B18.21.1500000000000000
    1"
    1.003"1.656"0.250"MS35338-148ASME B18.21.120000000000000
    1 1/8"
    1.129"1.847"0.281"MS35338-149ASME B18.21.110000000000000
    1 1/4"
    1.254"2.036"0.312"MS35338-150ASME B18.21.110000000000000
     
    Black-Oxide 18-8 Stainless Steel
    5/16"
    0.314"0.583"0.078"MS35338-140ASME B18.21.1500000000000000
    3/8"
    0.377"0.680"0.094"MS35338-141ASME B18.21.1100000000000000
    7/16"
    0.440"0.776"0.109"MS35338-142ASME B18.21.1100000000000000
    1/2"
    0.502"0.869"0.125"MS35338-143ASME B18.21.1100000000000000
    9/16"
    0.564"0.965"0.141"MS35338-144ASME B18.21.120000000000000
    5/8"
    0.628"1.073"0.156"MS35338-145ASME B18.21.120000000000000
     
    Super-Corrosion-Resistant Passivated 316 Stainless Steel
    No. 2
    0.088"0.172"0.020"MS35338-134ASME B18.21.11000000000000000
    No. 4
    0.114"0.209"0.025"MS35338-135ASME B18.21.11000000000000000
    No. 6
    0.141"0.250"0.031"MS35338-136ASME B18.21.11000000000000000
    No. 8
    0.167"0.293"0.040"MS35338-137ASME B18.21.11000000000000000
    No. 10
    0.193"0.334"0.047"MS35338-138ASME B18.21.11000000000000000
    1/4"
    0.252"0.487"0.062"MS35338-139ASME B18.21.1500000000000000
    5/16"
    0.314"0.583"0.078"MS35338-140ASME B18.21.1100000000000000
    3/8"
    0.377"0.680"0.094"MS35338-141ASME B18.21.1100000000000000
    1/2"
    0.502"0.869"0.125"MS35338-143ASME B18.21.150000000000000
    5/8"
    0.628"1.073"0.156"MS35338-145ASME B18.21.130000000000000
    3/4"
    0.753"1.265"0.188"MS35338-146ASME B18.21.120000000000000
     
    Super-Corrosion-Resistant Black-Oxide 316 Stainless Steel
    No. 2
    0.088"0.172"0.020"MS35338-134ASME B18.21.11000000000000000
    No. 4
    0.114"0.209"0.025"MS35338-135ASME B18.21.11000000000000000
    No. 6
    0.141"0.250"0.031"MS35338-136ASME B18.21.11000000000000000
    No. 8
    0.167"0.293"0.040"MS35338-137ASME B18.21.11000000000000000
    No. 10
    0.193"0.334"0.047"MS35338-138ASME B18.21.11000000000000000
    1/4"
    0.252"0.487"0.062"MS35338-139ASME B18.21.1500000000000000
    3/8"
    0.377"0.680"0.094"MS35338-141ASME B18.21.11000000000000000
    1/2"
    0.502"0.869"0.125"MS35338-143ASME B18.21.1500000000000000
    3/4"
    0.753"1.265"0.188"MS35338-146ASME B18.21.120000000000000
     
    Zinc-Yellow-Chromate-Plated Steel
    No. 2
    0.088"0.172"0.020"MS35338-39ASME B18.21.11000000000000000
    No. 4
    0.114"0.209"0.025"MS35338-40ASME B18.21.11000000000000000
    No. 6
    0.141"0.250"0.031"MS35338-41ASME B18.21.11000000000000000
    No. 8
    0.167"0.293"0.040"MS35338-42ASME B18.21.11000000000000000
    No. 10
    0.193"0.334"0.047"MS35338-43ASME B18.21.11000000000000000
    1/4"
    0.252"0.487"0.062"MS35338-44ASME B18.21.1500000000000000
    5/16"
    0.314"0.583"0.078"MS35338-45ASME B18.21.1500000000000000
    3/8"
    0.377"0.680"0.094"MS35338-46ASME B18.21.1250000000000000
    7/16"
    0.440"0.776"0.109"MS35338-47ASME B18.21.1250000000000000
    1/2"
    0.502"0.869"0.125"MS35338-48ASME B18.21.1100000000000000
    9/16"
    0.564"0.965"0.141"MS35338-49ASME B18.21.1100000000000000
    5/8"
    0.628"1.073"0.156"MS35338-50ASME B18.21.1100000000000000
    3/4"
    0.753"1.265"0.188"MS35338-51ASME B18.21.150000000000000
    7/8"
    0.878"1.459"0.219"MS35338-52ASME B18.21.150000000000000
    1"
    1.003"1.656"0.250"MS35338-53ASME B18.21.130000000000000
    1 1/8"
    1.129"1.847"0.281"MS35338-54ASME B18.21.130000000000000
    1 1/4"
    1.254"2.036"0.312"MS35338-55ASME B18.21.120000000000000
    1 3/8"
    1.379"2.219"0.344"MS35338-56ASME B18.21.120000000000000
    1 1/2"
    1.504"2.419"0.375"MS35338-57ASME B18.21.110000000000000
     
    Corrosion-Resistant Cadmium-Plated Steel
    No. 2
    0.088"0.172"0.020"MS35338-39ASME B18.21.1500000000000000
    No. 4
    0.114"0.209"0.025"MS35338-40ASME B18.21.1500000000000000
    No. 6
    0.141"0.250"0.031"MS35338-41ASME B18.21.1500000000000000
    No. 8
    0.167"0.293"0.040"MS35338-42ASME B18.21.1500000000000000
    No. 10
    0.193"0.334"0.047"MS35338-43ASME B18.21.1500000000000000
    1/4"
    0.252"0.487"0.062"MS35338-44ASME B18.21.1500000000000000
    5/16"
    0.314"0.583"0.078"MS35338-45ASME B18.21.1500000000000000
    3/8"
    0.377"0.680"0.094"MS35338-46ASME B18.21.1250000000000000
    7/16"
    0.440"0.776"0.109"MS35338-47ASME B18.21.1250000000000000
    1/2"
    0.502"0.869"0.125"MS35338-48ASME B18.21.1100000000000000
    9/16"
    0.564"0.965"0.141"MS35338-49ASME B18.21.150000000000000
    5/8"
    0.628"1.073"0.156"MS35338-50ASME B18.21.120000000000000
     

    Split Lock Washers for Socket Head Screws
    3D CAD models available

    Image of Product. Front orientation. Lock Washers. Split-Lock Washer, For Socket Head Screws.
    Stop socket head screws from loosening due to mild vibration. These washers have a small diameter to fit under screws with narrow heads, but are still thick enough to keep fasteners secure. While they're not as vibration resistant as other lock washers, they are a great fit for electrical panels, light fixtures, and other light duty assemblies. Split lock washers are not reusable, and they only work with fasteners that have right-hand threads. Also known as high-collar lock washers.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these washers won't rust when exposed to moisture. However, they can't hold up to the harsh chemicals that 316 stainless steel can.
    Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these washers have a dark, matte coating to create a finished look. They won't rust in wet and outdoor environments, but can't hold up to harsh chemicals as well as 316 stainless steel.
    Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.
    Black-Oxide Steel—Typically chosen for their appearance, these washers have a dark, matte coating that creates a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
    Steel—Best for dry environments since moisture will cause these washers to rust.
    For Screw
    Size
    ID
    OD
    Thk.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    No. 2
    0.094"0.142"0.022"__10000000000000000
    No. 4
    0.120"0.173"0.022"ASME B18.21.11000000000000000
    No. 5
    0.133"0.202"0.030"ASME B18.21.11000000000000000
    No. 6
    0.148"0.216"0.030"ASME B18.21.11000000000000000
    No. 8
    0.174"0.267"0.047"ASME B18.21.11000000000000000
    No. 10
    0.200"0.294"0.047"ASME B18.21.11000000000000000
    No. 12
    0.227"0.331"0.078"__1000000000000000
    1/4"
    0.260"0.363"0.078"ASME B18.21.11000000000000000
    5/16"
    0.322"0.457"0.093"ASME B18.21.1500000000000000
    3/8"
    0.385"0.550"0.125"ASME B18.21.15000000000000000
    7/16"
    0.450"0.644"0.140"ASME B18.21.15000000000000000
    1/2"
    0.512"0.733"0.172"ASME B18.21.12500000000000000
    5/8"
    0.641"0.917"0.203"ASME B18.21.1100000000000000
    3/4"
    0.766"1.105"0.218"ASME B18.21.11000000000000000
    7/8"
    0.894"1.291"0.234"ASME B18.21.1500000000000000
    1"
    1.024"1.478"0.250"ASME B18.21.110000000000000
    M3
    3.4 mm5.6 mm0.9 mm to 1.1 mmDIN 79801000000000000000
    M3.5
    3.9 mm6.1 mm0.9 mm to 1.1 mmDIN 79801000000000000000
    M4
    4.4 mm7.0 mm1.1 mm to 1.3 mmDIN 79801000000000000000
    M5
    5.4 mm8.8 mm1.5 mm to 1.7 mmDIN 79801000000000000000
    M6
    6.5 mm9.9 mm1.5 mm to 1.7 mmDIN 79801000000000000000
    M8
    8.5 mm12.7 mm1.9 mm to 2.1 mmDIN 79801000000000000000
    M10
    10.7 mm16.0 mm2.3 mm to 2.7 mmDIN 798010000000000000000
    M12
    12.7 mm18.0 mm2.3 mm to 2.7 mmDIN 7980500000000000000
    M14
    14.7 mm21.1 mm2.8 mm to 3.2 mmDIN 7980100000000000000
    M16
    17.0 mm24.4 mm3.3 mm to 3.7 mmDIN 7980100000000000000
    M18
    19.0 mm26.4 mm3.3 mm to 3.7 mmDIN 7980100000000000000
    M20
    21.2 mm30.6 mm4.3 mm to 4.7 mmDIN 79801000000000000000
    M22
    23.5 mm32.9 mm4.3 mm to 4.7 mmDIN 7980500000000000000
    M24
    25.5 mm35.9 mm4.8 mm to 5.2 mmDIN 798050000000000000
    M30
    31.7 mm44.1 mm5.8 mm to 6.2 mmDIN 7980100000000000000
     
    Black-Oxide 18-8 Stainless Steel
    No. 4
    0.120"0.173"0.022"ASME B18.21.110000000000000000
    No. 6
    0.148"0.216"0.030"ASME B18.21.110000000000000000
    No. 8
    0.174"0.267"0.047"ASME B18.21.110000000000000000
    No. 10
    0.200"0.294"0.047"ASME B18.21.1500000000000000
    1/4"
    0.260"0.363"0.078"ASME B18.21.15000000000000000
    5/16"
    0.322"0.457"0.093"ASME B18.21.1250000000000000
    3/8"
    0.385"0.550"0.125"ASME B18.21.1100000000000000
    1/2"
    0.512"0.733"0.172"ASME B18.21.1100000000000000
    5/8"
    0.641"0.917"0.203"ASME B18.21.1500000000000000
    3/4"
    0.766"1.105"0.218"ASME B18.21.110000000000000
     
    Super-Corrosion-Resistant 316 Stainless Steel
    No. 2
    0.094"0.142"0.022"__1000000000000000
    No. 4
    0.120"0.173"0.022"ASME B18.21.11000000000000000
    No. 5
    0.133"0.202"0.030"ASME B18.21.11000000000000000
    No. 6
    0.148"0.216"0.030"ASME B18.21.11000000000000000
    No. 8
    0.174"0.267"0.047"ASME B18.21.11000000000000000
    No. 10
    0.200"0.294"0.047"ASME B18.21.11000000000000000
    1/4"
    0.260"0.363"0.078"ASME B18.21.11000000000000000
    5/16"
    0.322"0.457"0.093"ASME B18.21.1500000000000000
    3/8"
    0.385"0.550"0.125"ASME B18.21.15000000000000000
    7/16"
    0.450"0.644"0.140"ASME B18.21.12500000000000000
    1/2"
    0.512"0.733"0.172"ASME B18.21.1100000000000000
    5/8"
    0.641"0.917"0.203"ASME B18.21.11000000000000000
    3/4"
    0.766"1.105"0.218"ASME B18.21.150000000000000
    7/8"
    0.894"1.291"0.234"ASME B18.21.110000000000000
    1"
    1.024"1.478"0.250"ASME B18.21.110000000000000
    1 1/4"
    1.280"1.790"0.313"ASME B18.21.110000000000000
    1 1/2"
    1.534"2.159"0.375"ASME B18.21.1100000000000000
    M3
    3.4 mm5.6 mm0.9 mm to 1.1 mmDIN 79801000000000000000
    M4
    4.4 mm7.0 mm1.1 mm to 1.3 mmDIN 79801000000000000000
    M5
    5.4 mm8.8 mm1.5 mm to 1.7 mmDIN 79801000000000000000
    M6
    6.5 mm9.9 mm1.5 mm to 1.7 mmDIN 79801000000000000000
    M8
    8.5 mm12.7 mm1.9 mm to 2.1 mmDIN 7980500000000000000
    M10
    10.7 mm16.0 mm2.3 mm to 2.7 mmDIN 79805000000000000000
    M12
    12.7 mm18.0 mm2.3 mm to 2.7 mmDIN 79802500000000000000
    M14
    14.7 mm21.1 mm2.8 mm to 3.2 mmDIN 7980100000000000000
    M16
    17.0 mm24.4 mm3.3 mm to 3.7 mmDIN 7980100000000000000
    M18
    19.0 mm26.4 mm3.3 mm to 3.7 mmDIN 7980100000000000000
    M20
    21.2 mm30.6 mm4.3 mm to 4.7 mmDIN 798010000000000000
    M22
    23.5 mm32.9 mm4.3 mm to 4.7 mmDIN 798010000000000000
    M24
    25.5 mm35.9 mm4.8 mm to 5.2 mmDIN 798010000000000000
    M30
    31.7 mm44.1 mm5.8 mm to 6.2 mmDIN 7980100000000000000
     
    Zinc-Plated Steel
    No. 6
    0.148"0.216"0.030"ASME B18.21.1500000000000000
    No. 8
    0.174"0.267"0.042"ASME B18.21.1500000000000000
    No. 10
    0.200"0.294"0.047"ASME B18.21.1500000000000000
    1/4"
    0.260"0.363"0.078"ASME B18.21.1500000000000000
    5/16"
    0.322"0.457"0.093"ASME B18.21.1500000000000000
    3/8"
    0.385"0.550"0.125"ASME B18.21.1500000000000000
    7/16"
    0.450"0.644"0.140"ASME B18.21.12500000000000000
    1/2"
    0.512"0.733"0.172"ASME B18.21.1250000000000000
    5/8"
    0.641"0.917"0.203"ASME B18.21.1250000000000000
    3/4"
    0.766"1.105"0.218"ASME B18.21.1100000000000000
    7/8"
    0.984"1.291"0.234"ASME B18.21.150000000000000
    1"
    1.024"1.478"0.250"ASME B18.21.1100000000000000
    M3
    3.4 mm5.6 mm0.9 mm to 1.1 mmDIN 79801000000000000000
    M4
    4.4 mm7.0 mm1.1 mm to 1.3 mmDIN 79801000000000000000
    M5
    5.4 mm8.8 mm1.5 mm to 1.7 mmDIN 79801000000000000000
    M6
    6.5 mm9.9 mm1.5 mm to 1.7 mmDIN 79801000000000000000
    M8
    8.5 mm12.7 mm1.9 mm to 2.1 mmDIN 79801000000000000000
    M10
    10.7 mm16.0 mm2.3 mm to 2.7 mmDIN 798010000000000000000
    M12
    12.7 mm18.0 mm2.3 mm to 2.7 mmDIN 798010000000000000000
    M14
    14.7 mm21.1 mm2.8 mm to 3.2 mmDIN 79805000000000000000
    M16
    17.0 mm24.4 mm3.3 mm to 3.7 mmDIN 7980250000000000000
    M18
    19.0 mm26.4 mm3.3 mm to 3.7 mmDIN 79802500000000000000
    M20
    21.2 mm30.6 mm4.3 mm to 4.7 mmDIN 7980100000000000000
    M24
    25.5 mm35.9 mm4.8 mm to 5.2 mmDIN 7980100000000000000
    M27
    28.5 mm38.9 mm4.8 mm to 5.2 mmDIN 798050000000000000
    M30
    31.7 mm44.1 mm5.8 mm to 6.2 mmDIN 7980500000000000000
    M36
    37.7 mm52.2 mm6.7 mm to 7.3 mmDIN 798010000000000000
     
    Zinc-Yellow-Chromate-Plated Steel
    M4
    4.1 mm7.0 mm1.1 mm to 1.3 mmDIN 79801000000000000000
    M5
    5.1 mm8.8 mm1.5 mm to 1.7 mmDIN 7980250000000000000
    M6
    6.1 mm9.9 mm1.5 mm to 1.7 mmDIN 79801000000000000000
    M8
    8.1 mm12.7 mm1.9 mm to 2.1 mmDIN 79801000000000000000
    M10
    10.2 mm16.0 mm2.3 mm to 2.7 mmDIN 798010000000000000000
    M12
    12.2 mm18.0 mm2.3 mm to 2.7 mmDIN 798010000000000000000
    M16
    16.2 mm24.4 mm3.3 mm to 3.7 mmDIN 79802500000000000000
     
    Black-Oxide Steel
    No. 4
    0.117"0.173"0.022"ASME B18.21.1500000000000000
    No. 6
    0.145"0.216"0.030"ASME B18.21.1500000000000000
    No. 8
    0.174"0.267"0.042"ASME B18.21.1500000000000000
    No. 10
    0.200"0.294"0.047"ASME B18.21.1500000000000000
    1/4"
    0.260"0.363"0.078"ASME B18.21.1500000000000000
    5/16"
    0.322"0.457"0.093"ASME B18.21.1500000000000000
    3/8"
    0.385"0.550"0.125"ASME B18.21.1100000000000000
    7/16"
    0.450"0.644"0.140"ASME B18.21.1250000000000000
    1/2"
    0.512"0.733"0.172"ASME B18.21.1250000000000000
    5/8"
    0.641"0.917"0.203"ASME B18.21.11000000000000000
    3/4"
    0.766"1.105"0.218"ASME B18.21.150000000000000
    7/8"
    0.984"1.291"0.234"ASME B18.21.150000000000000
    1"
    1.024"1.478"0.250"ASME B18.21.110000000000000
    1 1/8"
    1.153"1.663"0.313"ASME B18.21.110000000000000
    1 1/4"
    1.280"1.790"0.313"ASME B18.21.110000000000000
    M3
    3.4 mm5.6 mm0.9 mm to 1.1 mmDIN 79801000000000000000
    M3.5
    3.9 mm6.1 mm0.9 mm to 1.1 mmDIN 79801000000000000000
    M4
    4.4 mm7.0 mm1.1 mm to 1.3 mmDIN 79801000000000000000
    M5
    5.4 mm8.8 mm1.5 mm to 1.7 mmDIN 79801000000000000000
    M6
    6.5 mm9.9 mm1.5 mm to 1.7 mmDIN 79801000000000000000
    M8
    8.5 mm12.7 mm1.9 mm to 2.1 mmDIN 79801000000000000000
    M10
    10.7 mm16.0 mm2.3 mm to 2.7 mmDIN 798010000000000000000
    M12
    12.7 mm18.0 mm2.3 mm to 2.7 mmDIN 798010000000000000000
    M14
    14.7 mm21.1 mm2.8 mm to 3.2 mmDIN 798010000000000000000
    M16
    17.0 mm24.4 mm3.3 mm to 3.7 mmDIN 79805000000000000000
    M18
    19.0 mm26.4 mm3.3 mm to 3.7 mmDIN 7980250000000000000
    M20
    21.2 mm30.6 mm4.3 mm to 4.7 mmDIN 79802500000000000000
    M22
    23.5 mm32.9 mm4.3 mm to 4.7 mmDIN 7980100000000000000
    M24
    25.5 mm35.9 mm4.8 mm to 5.2 mmDIN 79801000000000000000
    M27
    28.5 mm38.9 mm4.8 mm to 5.2 mmDIN 798050000000000000
    M30
    31.7 mm44.1 mm5.8 mm to 6.2 mmDIN 7980500000000000000
    M36
    37.7 mm52.2 mm6.7 mm to 7.3 mmDIN 798010000000000000
    M42
    43.7 mm60.2 mm7.7 mm to 8.3 mmDIN 7980100000000000000
    M48
    50.5 mm67.0 mm7.7 mm to 8.3 mmDIN 7980100000000000000
     
    Steel
    No. 4
    0.120"0.173"0.022"ASME B18.21.11000000000000000
    No. 5
    0.133"0.202"0.030"ASME B18.21.11000000000000000
    No. 6
    0.148"0.216"0.030"ASME B18.21.11000000000000000
    No. 10
    0.200"0.294"0.047"ASME B18.21.11000000000000000
    1/4"
    0.260"0.363"0.078"ASME B18.21.11000000000000000
    5/16"
    0.322"0.457"0.093"ASME B18.21.11000000000000000
    3/8"
    0.385"0.550"0.125"ASME B18.21.11000000000000000
    7/16"
    0.450"0.644"0.140"ASME B18.21.110000000000000000
    1/2"
    0.512"0.733"0.172"ASME B18.21.110000000000000000
    5/8"
    0.641"0.917"0.203"ASME B18.21.15000000000000000
    3/4"
    0.766"1.105"0.218"ASME B18.21.1250000000000000
    7/8"
    0.894"1.291"0.234"ASME B18.21.12500000000000000
    1"
    1.024"1.478"0.250"ASME B18.21.1100000000000000
    1 1/8"
    1.153"1.663"0.313"ASME B18.21.1500000000000000
    1 1/4"
    1.280"1.790"0.313"ASME B18.21.11000000000000000
    1 1/2"
    1.534"2.159"0.375"ASME B18.21.1500000000000000
     

    Split Lock Washer Assortments

    Image of Product. Front orientation. Lock Washers. Sold as Assortments, Split-Lock Washer.
    Keep a collection of common lock washers on hand to stop nuts and screws from loosening due to mild vibration. These washers have split ends that bite into the fastener to keep it secure. While they're not as vibration resistant as other lock washers, they are a great fit for electrical panels, light fixtures, and other light duty assemblies. Split lock washers are not reusable, and they only work with fasteners that have right-hand threads.
    Labels in the lid include our part numbers, so it's easy to replenish the assortments.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these washers won't rust when exposed to moisture. However, they can't hold up to the harsh chemicals that 316 stainless steel can.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Steel—Best for dry environments since moisture will cause these washers to rust.
    No. of
    Pieces
    Sizes Included
    Specs.
    Met
    Container
    Type
    Each
    18-8 Stainless Steel
    350For No. 8 to 1/2" Screw Sizes__Plastic Box000000000000000
    755For M3 to M20 Screw SizesDIN 127BPlastic Box000000000000000
    1,350For No. 4 to 1" Screw Sizes__Metal Box000000000000000
     
    Zinc-Plated Steel
    350For No. 8 to 1/2" Screw Sizes__Plastic Box00000000000000
    1,350For No. 4 to 1" Screw Sizes__Metal Box000000000000000
     
    Steel
    755For M3 to M20 Screw SizesDIN 127BPlastic Box00000000000000
     

    Wave Spring Lock Washers
    3D CAD models available

    Image of Product. Front orientation. Lock Washers. Wave Washer, Spring Lock Washer.
    The wavy shape flexes like a spring to keep nuts and screws secure on slightly uneven surfaces. These washers add a small amount of tension to stop fasteners from backing out due to mild vibration. While they don't hold as well as other lock washers, they do grip slightly better than curved washers. They work best in electrical panels, light fixtures, and other light duty assemblies. Since these washers hold their shape when untightened, you can reuse them a handful of times without losing strength.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these washers won't rust when exposed to moisture. However, they can't hold up to the harsh chemicals that 316 stainless steel can.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    DIN 128B—These washers have split ends that bite into your material surface for a tighter hold than other wave washers.
    For Screw
    Size
    No. of
    Waves
    ID,
    mm
    OD,
    mm
    Thk.,
    mm
    Overall
    Ht., mm
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    M4
    14.47.60.71.4DIN 128B50000000000000000
    M5
    15.49.20.91.7DIN 128B250000000000000
    M6
    16.511.81.22.2DIN 128B250000000000000
    M8
    18.514.81.52.7DIN 128B250000000000000
    M10
    110.718.11.73.1DIN 128B2500000000000000
    M12
    112.721.11.93.6DIN 128B100000000000000
    M16
    117.027.42.65.1DIN 128B10000000000000
     
    Zinc-Plated Steel
    M3
    13.16.20.61.1DIN 128B1000000000000000
    M4
    14.17.60.71.2DIN 128B1000000000000000
    M5
    15.19.20.91.5DIN 128B1000000000000000
    M6
    16.111.81.22DIN 128B10000000000000000
    M8
    18.114.81.52.5DIN 128B10000000000000000
    M10
    110.218.11.72.9DIN 128B5000000000000000
    M12
    112.221.12.03.4DIN 128B250000000000000
    M14
    114.224.12.43.9DIN 128B2500000000000000
    M16
    116.227.42.74.5DIN 128B2500000000000000
    M18
    118.229.42.74.5DIN 128B100000000000000
    M22
    122.535.93.05.1DIN 128B50000000000000
    M24
    124.540.03.86.5DIN 128B500000000000000
     

    Curved Spring Lock Washers
    3D CAD models available

    Image of Product. Front orientation. Lock Washers. Curved Washer, Spring Lock Washer.
    The curvy, spring-like shape adds a small amount of tension to prevent nuts and screws from backing out due to mild vibration. These washers also flex slightly to compensate for uneven surfaces. While more secure than a standard flat washer, these have the least amount of gripping power of all our lock washers. They are best suited for electrical panels, light fixtures, and other light duty assemblies. These washers hold their shape when untightened, so you can reuse them a handful of times without losing strength.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these washers won't rust when exposed to moisture. However, they can't hold up to the harsh chemicals that 316 stainless steel can.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.
    Black-Oxide Steel—Typically chosen for their appearance, these washers have a dark, matte coating that creates a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
    Steel—Best for dry environments since moisture will cause these washers to rust.
    DIN 128A—These washers have split ends that bite into your material surface for a tighter hold than other curved washers.
    For Screw
    Size
    ID,
    mm
    OD,
    mm
    Thk.,
    mm
    Overall
    Ht., mm
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    M2.5
    2.65.10.50.9DIN 128A10000000000000000
    M3
    3.16.20.61.1DIN 128A1000000000000000
    M4
    4.17.60.71.2DIN 128A1000000000000000
    M5
    5.19.20.91.5DIN 128A10000000000000000
    M6
    6.111.81.22DIN 128A10000000000000000
    M8
    8.114.81.52.5DIN 128A500000000000000
    M10
    10.218.11.72.9DIN 128A5000000000000000
    M12
    12.221.12.03.4DIN 128A5000000000000000
    M14
    14.224.12.33.9DIN 128A2500000000000000
    M16
    16.227.42.74.5DIN 128A2000000000000000
    M18
    18.229.42.74.5DIN 128A1000000000000000
    M20
    20.233.63.05.1DIN 128A1000000000000000
    M22
    22.535.93.05.1DIN 128A500000000000000
    M24
    24.540.03.86.5DIN 128A500000000000000
     
    Zinc-Plated Steel
    M2.5
    2.65.10.50.9DIN 128A10000000000000000
    M3
    3.16.20.61.1DIN 128A1000000000000000
    M4
    4.17.60.71.2DIN 128A1000000000000000
    M5
    5.19.20.91.5DIN 128A1000000000000000
    M6
    6.111.81.22DIN 128A10000000000000000
    M8
    8.114.81.52.5DIN 128A10000000000000000
    M10
    10.218.11.72.9DIN 128A10000000000000000
    M12
    12.221.12.03.4DIN 128A5000000000000000
    M14
    14.224.12.33.9DIN 128A2500000000000000
    M16
    16.227.42.74.5DIN 128A2500000000000000
    M18
    18.229.42.74.5DIN 128A100000000000000
    M20
    20.233.63.05.1DIN 128A1000000000000000
    M22
    22.535.93.05.1DIN 128A1000000000000000
    M24
    24.540.03.86.5DIN 128A1000000000000000
    M30
    30.548.25.89.5DIN 128A10000000000000
     
    Zinc-Yellow-Chromate-Plated Steel
    M3
    3.16.20.61.1DIN 128A1000000000000000
    M3.5
    3.66.70.61.1DIN 128A1000000000000000
    M4
    4.17.60.71.2DIN 128A1000000000000000
    M5
    5.19.20.91.5DIN 128A1000000000000000
    M6
    6.111.81.22DIN 128A1000000000000000
    M8
    8.114.81.52.5DIN 128A1000000000000000
    M10
    10.218.11.72.9DIN 128A10000000000000000
    M12
    12.221.12.03.4DIN 128A500000000000000
    M14
    14.224.12.33.9DIN 128A2500000000000000
    M16
    16.227.42.74.5DIN 128A1000000000000000
    M20
    20.233.63.05.1DIN 128A1000000000000000
     
    Black-Oxide Steel
    M3
    3.16.20.61.1DIN 128A1000000000000000
    M4
    4.17.60.71.2DIN 128A1000000000000000
    M5
    5.19.20.91.5DIN 128A1000000000000000
    M6
    6.111.81.22DIN 128A500000000000000
    M8
    8.114.81.52.5DIN 128A500000000000000
    M10
    10.218.11.72.9DIN 128A2500000000000000
    M12
    12.221.12.03.4DIN 128A100000000000000
    M16
    16.227.42.74.5DIN 128A100000000000000
    M20
    20.233.63.05.1DIN 128A50000000000000
    M24
    24.540.03.86.5DIN 128A500000000000000
     
    Steel
    M2.5
    2.34.60.61.1DIN 69052000000000000000
    M3
    2.75.60.71.3DIN 69052000000000000000
    M4
    3.67.00.81.4DIN 690520000000000000000
    M5
    4.68.61.01.7DIN 690510000000000000000
    M6
    5.511.01.32.2DIN 69055000000000000000
    M8
    7.414.01.62.8DIN 69055000000000000000
    M10
    9.317.01.83.2DIN 69051000000000000000
    M12
    11.019.72.13.7DIN 69051000000000000000
     

    Coil Lock Washers
    3D CAD models available

    Image of Product. Front orientation. Lock Washers. Coil Washer.
    Washers flatten under pressure and push against the nut or screw to stop it from backing out. The double coil adds more tension than split lock washers for a tighter hold on materials that contract and expand, such as plastic and wood. These washers are reusable a handful of times, but their holding power decreases with each use.
    Corrosion-Resistant Galvanized Steel—These washers combine the strength of steel with the rust resistance of stainless steel. They're an alternative to 18-8 stainless steel in wet and outdoor environments, but they won't hold up to salt water and chemicals.
    For Screw
    Size
    ID
    OD
    Thk.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Corrosion-Resistant Galvanized Steel
    3/8"
    0.381"0.680"0.094"ASME B18.21.1500000000000000
    1/2"
    0.507"0.869"0.125"ASME B18.21.110000000000000
    5/8"
    0.634"1.073"0.156"ASME B18.21.110000000000000
    3/4"
    0.759"1.265"0.188"ASME B18.21.110000000000000
     
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