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    328 Products

    Tooth Lock Washers

    Grip tighter than split lock washers to prevent nuts and screws from loosening in applications with constant movement, such as conveyors. Tooth lock washers typically can't be reused because the teeth often get bent when tightened.
    External Tooth
    Image of Product. Front orientation. Lock Washers. Tooth Washer, External Tooth.
    Teeth on the outside edge bite into both the fastener and the mating surface for a stronger hold than internal-tooth lock washers. However, they may mar your material and snag on objects. Pair these washers with nuts and screws that are large enough to make contact with the teeth, such as pan, button, and binding head screws.
    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.
    Wear-Resistant 400 Series Stainless Steel—These grip hard material better than other types of stainless steel. They are not as corrosion resistant as 18-8 and 316 stainless steel, so they are best for environments that experience occasional moisture.
    Zinc-Plated Steel—A common choice for areas with 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.
    Super-Corrosion-Resistant Phosphor Bronze—Stronger and more wear resistant than silicon bronze, but with the same excellent corrosion resistance. These washers won't rust or deteriorate when submerged in salt water, so they're a good fit for marine environments.
    DIN 6798—Best for slightly bumpy or irregular surfaces because the teeth are angled to make even contact with the material.
    For Screw
    Size
    ID
    OD
    Thk.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    No. 2
    0.086"0.189"0.010" to 0.013"ASME B18.21.110000000000000000
    No. 4
    0.115"0.260"0.012" to 0.018"ASME B18.21.11000000000000000
    No. 6
    0.141"0.320"0.016" to 0.022"ASME B18.21.11000000000000000
    No. 8
    0.168"0.381"0.018" to 0.023"ASME B18.21.11000000000000000
    No. 10
    0.195"0.410"0.018" to 0.024"ASME B18.21.11000000000000000
    No. 12
    0.221"0.475"0.020" to 0.027"ASME B18.21.11000000000000000
    1/4"
    0.256"0.510"0.023" to 0.028"ASME B18.21.11000000000000000
    5/16"
    0.320"0.610"0.028" to 0.034"ASME B18.21.1500000000000000
    3/8"
    0.384"0.694"0.032" to 0.040"ASME B18.21.1250000000000000
    1/2"
    0.513"0.900"0.037" to 0.045"ASME B18.21.1500000000000000
    5/8"
    0.641"1.070"0.042" to 0.050"ASME B18.21.1100000000000000
    3/4"
    0.768"1.260"0.047" to 0.055"ASME B18.21.150000000000000
    M2
    2.2 mm4.5 mm0.2 mm to 0.4 mmDIN 67981000000000000000
    M2
    2.3 mm4.5 mm0.2 mm to 0.4 mmDIN 67971000000000000000
    M2.5
    2.7 mm5.5 mm0.3 mm to 0.5 mmDIN 67981000000000000000
    M2.5
    2.8 mm5.5 mm0.3 mm to 0.5 mmDIN 67971000000000000000
    M3
    3.2 mm6.0 mm0.3 mm to 0.5 mmDIN 67971000000000000000
    M3
    3.2 mm6.0 mm0.3 mm to 0.5 mmDIN 67981000000000000000
    M3.5
    3.9 mm7.0 mm0.4 mm to 0.6 mmDIN 67971000000000000000
    M4
    4.3 mm8.0 mm0.4 mm to 0.6 mmDIN 67971000000000000000
    M4
    4.3 mm8.0 mm0.4 mm to 0.6 mmDIN 67981000000000000000
    M5
    5.3 mm10.0 mm0.5 mm to 0.7 mmDIN 67971000000000000000
    M5
    5.3 mm10.0 mm0.5 mm to 0.7 mmDIN 67981000000000000000
    M6
    6.4 mm11.0 mm0.6 mm to 0.8 mmDIN 67971000000000000000
    M6
    6.4 mm11.0 mm0.6 mm to 0.8 mmDIN 67981000000000000000
    M7
    7.4 mm12.5 mm0.7 mm to 0.9 mmDIN 67971000000000000000
    M8
    8.4 mm15.0 mm0.7 mm to 0.9 mmDIN 67971000000000000000
    M8
    8.4 mm15.0 mm0.7 mm to 0.9 mmDIN 67981000000000000000
    M10
    10.5 mm18.0 mm0.8 mm to 1.0 mmDIN 67971000000000000000
    M10
    10.5 mm18.0 mm0.8 mm to 1.0 mmDIN 679810000000000000000
    M12
    13.0 mm20.5 mm0.9 mm to 1.2 mmDIN 6797500000000000000
    M12
    13.0 mm20.5 mm0.9 mm to 1.2 mmDIN 6798500000000000000
    M14
    15.0 mm24.0 mm0.9 mm to 1.2 mmDIN 6797500000000000000
    M16
    17.0 mm26.0 mm1.0 mm to 1.4 mmDIN 6798500000000000000
    M16
    17.3 mm26.0 mm1.0 mm to 1.4 mmDIN 67975000000000000000
    M18
    19.0 mm30.0 mm1.2 mm to 1.6 mmDIN 6797100000000000000
    M20
    21.0 mm33.0 mm1.2 mm to 1.5 mmDIN 6798100000000000000
    M20
    21.0 mm33.0 mm1.2 mm to 1.6 mmDIN 6797100000000000000
    M22
    23.0 mm36.0 mm1.3 mm to 1.7 mmDIN 6797100000000000000
    M24
    25.0 mm38.0 mm1.3 mm to 1.7 mmDIN 67971000000000000000
    M24
    25.0 mm38.0 mm1.4 mm to 1.6 mmDIN 6798100000000000000
    M30
    31.0 mm48.0 mm1.4 mm to 1.8 mmDIN 67971000000000000000
     
    Black-Oxide 18-8 Stainless Steel
    No. 6
    0.141"0.320"0.016" to 0.022"ASME B18.21.11000000000000000
    No. 8
    0.168"0.381"0.018" to 0.023"ASME B18.21.11000000000000000
    No. 10
    0.195"0.410"0.018" to 0.024"ASME B18.21.11000000000000000
    1/4"
    0.256"0.510"0.023" to 0.028"ASME B18.21.11000000000000000
    5/16"
    0.320"0.610"0.028" to 0.034"ASME B18.21.11000000000000000
    3/8"
    0.384"0.694"0.032" to 0.040"ASME B18.21.110000000000000000
     
    Super-Corrosion-Resistant 316 Stainless Steel
    No. 4
    0.115"0.260"0.012" to 0.018"ASME B18.21.1100000000000000
    No. 6
    0.141"0.320"0.016" to 0.022"ASME B18.21.1100000000000000
    No. 8
    0.168"0.381"0.018" to 0.023"ASME B18.21.1100000000000000
    No. 10
    0.195"0.410"0.018" to 0.024"ASME B18.21.1100000000000000
    1/4"
    0.256"0.510"0.023" to 0.028"ASME B18.21.1250000000000000
    5/16"
    0.320"0.610"0.028" to 0.034"ASME B18.21.1250000000000000
    3/8"
    0.384"0.694"0.032" to 0.040"ASME B18.21.1100000000000000
    1/2"
    0.513"0.900"0.037" to 0.045"ASME B18.21.1100000000000000
    M3
    3.2 mm6.0 mm0.3 mm to 0.5 mmDIN 679750000000000000
    M4
    4.3 mm8.0 mm0.4 mm to 0.6 mmDIN 679750000000000000
    M5
    5.3 mm10.0 mm0.5 mm to 0.7 mmDIN 679750000000000000
    M6
    6.4 mm11.0 mm0.6 mm to 0.8 mmDIN 679750000000000000
    M8
    8.4 mm15.0 mm0.7 mm to 0.9 mmDIN 6797500000000000000
    M10
    10.5 mm18.0 mm0.8 mm to 1.0 mmDIN 679710000000000000
    M12
    13.0 mm20.5 mm0.9 mm to 1.2 mmDIN 6797100000000000000
    M14
    15.0 mm24.0 mm0.9 mm to 1.2 mmDIN 6797100000000000000
    M16
    17.3 mm26.0 mm1.0 mm to 1.4 mmDIN 6797100000000000000
    M20
    21.0 mm33.0 mm1.2 mm to 1.6 mmDIN 6797100000000000000
     
    Wear-Resistant 400 Series Stainless Steel
    No. 2
    0.096"0.195"0.010" to 0.016"1000000000000000
    No. 3
    0.102"0.235"0.010" to 0.016"ASME B18.21.11000000000000000
    No. 4
    0.115"0.260"0.012" to 0.018"ASME B18.21.11000000000000000
    No. 5
    0.129"0.285"0.014" to 0.020"ASME B18.21.11000000000000000
    No. 6
    0.141"0.320"0.016" to 0.022"ASME B18.21.11000000000000000
    No. 8
    0.168"0.381"0.018" to 0.023"ASME B18.21.11000000000000000
    No. 10
    0.195"0.410"0.018" to 0.024"ASME B18.21.11000000000000000
    No. 12
    0.221"0.475"0.020" to 0.027"ASME B18.21.11000000000000000
    1/4"
    0.256"0.510"0.023" to 0.028"ASME B18.21.11000000000000000
    5/16"
    0.320"0.610"0.028" to 0.034"ASME B18.21.11000000000000000
    3/8"
    0.384"0.694"0.032" to 0.040"ASME B18.21.1500000000000000
    7/16"
    0.448"0.760"0.032" to 0.040"ASME B18.21.1500000000000000
    1/2"
    0.513"0.900"0.037" to 0.045"ASME B18.21.1250000000000000
    9/16"
    0.576"0.985"0.037" to 0.045"ASME B18.21.1250000000000000
    5/8"
    0.641"1.070"0.042" to 0.050"ASME B18.21.1250000000000000
    3/4"
    0.768"1.260"0.047" to 0.055"ASME B18.21.12500000000000000
    7/8"
    0.897"1.410"0.052" to 0.060"ASME B18.21.150000000000000
    1"
    1.025"1.620"0.059" to 0.067"ASME B18.21.150000000000000
     
    Zinc-Plated Steel
    No. 2
    0.086"0.195"0.010" to 0.016"1000000000000000
    No. 3
    0.102"0.235"0.010" to 0.016"ASME B18.21.11000000000000000
    No. 4
    0.115"0.260"0.012" to 0.018"ASME B18.21.11000000000000000
    No. 6
    0.141"0.320"0.016" to 0.022"ASME B18.21.11000000000000000
    No. 8
    0.168"0.381"0.018" to 0.023"ASME B18.21.11000000000000000
    No. 10
    0.195"0.410"0.018" to 0.024"ASME B18.21.11000000000000000
    No. 12
    0.221"0.475"0.020" to 0.027"ASME B18.21.11000000000000000
    1/4"
    0.256"0.510"0.023" to 0.028"ASME B18.21.11000000000000000
    5/16"
    0.320"0.610"0.028" to 0.034"ASME B18.21.11000000000000000
    3/8"
    0.384"0.694"0.032" to 0.040"ASME B18.21.11000000000000000
    7/16"
    0.448"0.760"0.032" to 0.040"ASME B18.21.110000000000000000
    1/2"
    0.513"0.900"0.037" to 0.045"ASME B18.21.110000000000000000
    9/16"
    0.576"0.985"0.037" to 0.045"ASME B18.21.1250000000000000
    5/8"
    0.641"1.070"0.042" to 0.050"ASME B18.21.15000000000000000
    3/4"
    0.768"1.260"0.047" to 0.055"ASME B18.21.12500000000000000
    7/8"
    0.897"1.410"0.052" to 0.060"ASME B18.21.12500000000000000
    1"
    1.025"1.620"0.059" to 0.067"ASME B18.21.11000000000000000
    M2
    2.3 mm4.5 mm0.2 mm to 0.4 mmDIN 67971000000000000000
    M2.5
    2.8 mm5.5 mm0.3 mm to 0.5 mmDIN 67971000000000000000
    M3
    3.2 mm6.0 mm0.3 mm to 0.5 mmDIN 67971000000000000000
    M3
    3.2 mm6.0 mm0.4 mm to 0.5 mmDIN 67981000000000000000
    M3.5
    3.9 mm7.0 mm0.9 mm to 1.2 mmDIN 67971000000000000000
    M4
    4.3 mm8.0 mm0.4 mm to 0.6 mmDIN 67971000000000000000
    M4
    4.3 mm8.0 mm0.5 mm to 0.6 mmDIN 67981000000000000000
    M5
    5.3 mm10.0 mm0.5 mm to 0.7 mmDIN 67971000000000000000
    M5
    5.3 mm10.0 mm0.6 mm to 0.7 mmDIN 67981000000000000000
    M6
    6.4 mm11.0 mm0.6 mm to 0.8 mmDIN 67971000000000000000
    M6
    6.4 mm11.0 mm0.7 mm to 0.8 mmDIN 67981000000000000000
    M7
    7.4 mm12.5 mm0.7 mm to 0.9 mmDIN 6797250000000000000
    M8
    8.4 mm15.0 mm0.7 mm to 0.9 mmDIN 67971000000000000000
    M8
    8.4 mm15.0 mm0.8 mm to 0.9 mmDIN 67981000000000000000
    M10
    10.5 mm18.0 mm0.8 mm to 1.0 mmDIN 6797500000000000000
    M10
    10.5 mm18.0 mm0.9 mm to 1.0 mmDIN 6798500000000000000
    M12
    13.0 mm20.5 mm0.9 mm to 1.2 mmDIN 6797250000000000000
    M12
    13.0 mm20.5 mm1.0 mm to 1.2 mmDIN 6798500000000000000
    M14
    15.0 mm24.0 mm0.9 mm to 1.2 mmDIN 6797250000000000000
    M16
    17.3 mm26.0 mm1.0 mm to 1.4 mmDIN 6797250000000000000
    M18
    19.0 mm30.0 mm1.2 mm to 1.6 mmDIN 679750000000000000
    M20
    21.0 mm33.0 mm1.2 mm to 1.6 mmDIN 679750000000000000
    M22
    23.0 mm36.0 mm1.3 mm to 1.7 mmDIN 679750000000000000
    M24
    25.0 mm38.0 mm1.3 mm to 1.7 mmDIN 679750000000000000
    M30
    31.0 mm48.0 mm1.4 mm to 1.8 mmDIN 679750000000000000
     
    Black-Oxide Steel
    No. 4
    0.115"0.260"0.012" to 0.018"ASME B18.21.11000000000000000
    No. 6
    0.141"0.320"0.016" to 0.022"ASME B18.21.11000000000000000
    No. 8
    0.168"0.381"0.018" to 0.023"ASME B18.21.11000000000000000
    No. 10
    0.195"0.410"0.018" to 0.024"ASME B18.21.11000000000000000
    No. 12
    0.221"0.475"0.020" to 0.027"ASME B18.21.11000000000000000
    1/4"
    0.256"0.510"0.023" to 0.028"ASME B18.21.11000000000000000
    3/8"
    0.384"0.694"0.032" to 0.040"ASME B18.21.1500000000000000
    1/2"
    0.513"0.900"0.037" to 0.045"ASME B18.21.1250000000000000
     
    Super-Corrosion-Resistant Phosphor Bronze
    No. 3
    0.102"0.235"0.010" to 0.016"ASME B18.21.11000000000000000
    No. 4
    0.115"0.260"0.012" to 0.018"ASME B18.21.11000000000000000
    No. 6
    0.141"0.320"0.016" to 0.022"ASME B18.21.11000000000000000
    No. 8
    0.168"0.381"0.018" to 0.023"ASME B18.21.11000000000000000
    No. 10
    0.195"0.410"0.018" to 0.024"ASME B18.21.11000000000000000
    No. 12
    0.221"0.475"0.020" to 0.027"ASME B18.21.11000000000000000
    1/4"
    0.256"0.510"0.023" to 0.028"ASME B18.21.110000000000000000
    5/16"
    0.320"0.610"0.028" to 0.034"ASME B18.21.1500000000000000
    3/8"
    0.384"0.694"0.032" to 0.040"ASME B18.21.1250000000000000
    7/16"
    0.448"0.760"0.032" to 0.040"ASME B18.21.1250000000000000
    1/2"
    0.513"0.900"0.037" to 0.045"ASME B18.21.12500000000000000
    5/8"
    0.641"1.070"0.042" to 0.050"ASME B18.21.1100000000000000
    3/4"
    0.768"1.260"0.047" to 0.055"ASME B18.21.150000000000000
     
    Internal and External Tooth
    Image of Product. Front orientation. Lock Washers. Tooth Washer, Internal and External Tooth.
    The strongest hold of all our tooth lock washers, these combine internal and external teeth to boost gripping power. However, the teeth may mar your material and snag on objects. Pair these washers with fasteners that are large enough to make contact with the external teeth, such as pan, button, and binding head screws.
    Wear-Resistant 410 Stainless Steel—These grip hard material better than other types of stainless steel. They are not as corrosion resistant as 18-8 and 316 stainless steel, so they are best for environments that experience occasional moisture.
    Zinc-Plated Steel—A common choice for areas with 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.
    For Screw
    Size
    ID
    OD
    Thk.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Wear-Resistant 410 Stainless Steel
    No. 4
    0.115"0.475"0.016" to 0.021"ASME B18.21.110000000000000000
    No. 6
    0.141"0.510"0.023" to 0.028"ASME B18.21.11000000000000000
    No. 8
    0.168"0.610"0.028" to 0.034"ASME B18.21.11000000000000000
    No. 10
    0.195"0.610"0.028" to 0.034"ASME B18.21.11000000000000000
    1/4"
    0.256"0.760"0.032" to 0.040"ASME B18.21.1500000000000000
    5/16"
    0.320"0.900"0.032" to 0.040"ASME B18.21.1500000000000000
    3/8"
    0.384"0.985"0.037" to 0.045"ASME B18.21.1250000000000000
    1/2"
    0.512"1.260"0.047" to 0.055"ASME B18.21.1100000000000000
     
    Zinc-Plated Steel
    No. 4
    0.116"0.478"0.016" to 0.018"ASME B18.21.1500000000000000
    No. 6
    0.142"0.506"0.023" to 0.027"ASME B18.21.1500000000000000
    No. 8
    0.168"0.506"0.023" to 0.027"ASME B18.21.110000000000000000
    No. 10
    0.195"0.601"0.027" to 0.031"ASME B18.21.110000000000000000
    1/4"
    0.256"0.760"0.033" to 0.037"ASME B18.21.110000000000000000
    5/16"
    0.320"0.898"0.033" to 0.037"ASME B18.21.15000000000000000
    3/8"
    0.384"0.985"0.037" to 0.041"ASME B18.21.15000000000000000
    7/16"
    0.448"1.070"0.043" to 0.047"ASME B18.21.1100000000000000
    1/2"
    0.512"1.260"0.048" to 0.052"ASME B18.21.1250000000000000
    5/8"
    0.640"1.620"0.060" to 0.064"ASME B18.21.1500000000000000
    M3
    3.2 mm12.0 mm1.4 mm to 1.7 mm5000000000000000
    M4
    4.3 mm15.0 mm1.9 mm to 2.3 mm5000000000000000
    M4
    4.3 mm18.0 mm2.2 mm to 2.6 mm250000000000000
    M5
    5.3 mm18.0 mm2.2 mm to 2.6 mm2500000000000000
    M6
    6.5 mm18.0 mm2.2 mm to 2.6 mm2500000000000000
    M8
    8.5 mm22.0 mm2.7 mm to 3.3 mm2500000000000000
    M10
    10.5 mm26.0 mm2.7 mm to 3.3 mm1000000000000000
    M12
    12.5 mm30.0 mm3.2 mm to 4.0 mm1000000000000000
    M16
    16.5 mm35.0 mm3.8 mm to 4.6 mm500000000000000
     
    Black-Oxide Steel
    No. 6
    0.142"0.506"0.023" to 0.027"ASME B18.21.11000000000000000
    No. 8
    0.168"0.506"0.023" to 0.027"ASME B18.21.110000000000000000
    1/4"
    0.256"0.760"0.033" to 0.037"ASME B18.21.110000000000000000
    5/16"
    0.320"0.898"0.033" to 0.037"ASME B18.21.15000000000000000
    3/8"
    0.384"0.985"0.037" to 0.041"ASME B18.21.12500000000000000
    7/16"
    0.448"1.070"0.043" to 0.047"ASME B18.21.12500000000000000
    1/2"
    0.512"1.260"0.048" to 0.052"ASME B18.21.1100000000000000
     

    Mil. Spec. Tooth Lock Washers

    These washers are manufactured and tested to strict U.S. military standards for material and construction. They resist vibration better than split lock washers to prevent nuts and screws from loosening in applications with constant movement, such as conveyors. Tooth lock washers typically can't be reused because the teeth often get bent when tightened.
    External Tooth
    Image of Product. Bottom orientation. Lock Washers. Tooth Washer, Mil. Spec., External Tooth.
    Teeth on the outside edge bite into both the fastener and the mating surface for a stronger hold than internal-tooth lock washers. However, they may mar your material and snag on objects. Pair these washers with nuts and screws that are large enough to make contact with the teeth, such as pan, button, and binding head screws.
    Wear-Resistant 410 Stainless Steel—These grip hard material better than other types of stainless steel. They are not as corrosion resistant as 18-8 and 316 stainless steel, so they are best for environments that experience occasional moisture.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Super-Corrosion-Resistant Phosphor Bronze—Stronger and more wear resistant than silicon bronze, but with the same excellent corrosion resistance. These washers won't rust or deteriorate when submerged in salt water, so they're a good fit for marine environments.
    For Screw
    Size
    ID
    OD
    Thk.
    Mil.
    Spec.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Wear-Resistant 410 Stainless Steel
    No. 4
    0.115"0.260"0.015" to 0.019"MS35335-57ASME B18.21.125000000000000000
    No. 6
    0.141"0.320"0.016" to 0.022"MS35335-58ASME B18.21.12500000000000000
    No. 8
    0.168"0.381"0.018" to 0.023"MS35335-59ASME B18.21.12500000000000000
    No. 10
    0.195"0.410"0.020" to 0.025"MS35335-60ASME B18.21.12500000000000000
    1/4"
    0.256"0.510"0.023" to 0.028"MS35335-61ASME B18.21.12500000000000000
    5/16"
    0.320"0.610"0.028" to 0.034"MS35335-62ASME B18.21.12500000000000000
    3/8"
    0.384"0.694"0.032" to 0.040"MS35335-63ASME B18.21.12500000000000000
    7/16"
    0.448"0.760"0.032" to 0.040"MS35335-64ASME B18.21.12500000000000000
    1/2"
    0.513"0.900"0.037" to 0.045"MS35335-65ASME B18.21.1100000000000000
    9/16"
    0.576"0.985"0.037" to 0.045"MS35335-66ASME B18.21.1100000000000000
    5/8"
    0.641"1.070"0.042" to 0.050"MS35335-67ASME B18.21.150000000000000
    3/4"
    0.768"1.260"0.047" to 0.055"MS35335-68ASME B18.21.150000000000000
    7/8"
    0.897"1.410"0.052" to 0.060"MS35335-69ASME B18.21.110000000000000
    1"
    1.025"1.620"0.059" to 0.067"MS35335-70ASME B18.21.110000000000000
     
    Zinc-Plated Steel
    No. 4
    0.115"0.260"0.015" to 0.019"MS35335-29ASME B18.21.11000000000000000
    No. 6
    0.141"0.320"0.016" to 0.022"MS35335-30ASME B18.21.110000000000000000
    No. 8
    0.168"0.381"0.018" to 0.023"MS35335-31ASME B18.21.110000000000000000
    No. 10
    0.195"0.410"0.020" to 0.025"MS35335-32ASME B18.21.110000000000000000
    1/4"
    0.256"0.510"0.023" to 0.028"MS35335-33ASME B18.21.110000000000000000
    5/16"
    0.320"0.610"0.028" to 0.034"MS35335-34ASME B18.21.15000000000000000
    3/8"
    0.384"0.694"0.032" to 0.040"MS35335-35ASME B18.21.15000000000000000
    7/16"
    0.448"0.760"0.032" to 0.040"MS35335-36ASME B18.21.12500000000000000
    1/2"
    0.513"0.900"0.037" to 0.045"MS35335-37ASME B18.21.12500000000000000
    9/16"
    0.576"0.985"0.037" to 0.045"MS35335-38ASME B18.21.12500000000000000
    5/8"
    0.641"1.070"0.042" to 0.050"MS35335-39ASME B18.21.1100000000000000
    3/4"
    0.768"1.260"0.047" to 0.055"MS35335-40ASME B18.21.1100000000000000
    7/8"
    0.897"1.410"0.052" to 0.060"MS35335-41ASME B18.21.1100000000000000
    1"
    1.025"1.620"0.059" to 0.067"MS35335-42ASME B18.21.150000000000000
     
    Super-Corrosion-Resistant Phosphor Bronze
    No. 10
    0.195"0.410"0.020" to 0.025"MS35335-88ASME B18.21.1250000000000000
    1/4"
    0.256"0.510"0.023" to 0.028"MS35335-89ASME B18.21.1100000000000000
    5/16"
    0.320"0.610"0.028" to 0.034"MS35335-90ASME B18.21.1100000000000000
    3/8"
    0.384"0.694"0.032" to 0.040"MS35335-91ASME B18.21.1100000000000000
    1/2"
    0.513"0.900"0.037" to 0.045"MS35335-93ASME B18.21.1100000000000000
     

    Countersunk Tooth Lock Washers

    These washers grip flat- and oval-head countersunk screws, so you get a secure hold without overtightening. They resist loosening in applications with constant motion, such as conveyors. Tooth lock washers typically can't be reused because the teeth often get bent when tightened.
    External Tooth
    Image of Product. Front orientation. Lock Washers. Countersunk Washer, Tooth Washer, External Tooth.
    Teeth on the outside edge bite into both the screw head and the mating surface to lock the assembly in place. 
    Wear-Resistant 400 Series Stainless Steel—These grip hard material better than other types of stainless steel. They are not as corrosion resistant as 18-8 and 316 stainless steel, so they are best for environments that experience occasional moisture.
    Zinc-Plated Steel—A common choice for areas with 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.
    DIN 6798—Best for slightly bumpy or irregular surfaces because the teeth are angled to make even contact with the material.
    For Screw
    Size
    ID
    OD
    Thk.
    Countersink
    Angle
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Wear-Resistant 400 Series Stainless Steel
    No. 6
    0.140"0.289"0.017" to 0.021"82°
    ASME B18.21.110000000000000000
    No. 8
    0.167"0.322"0.017" to 0.021"82°
    ASME B18.21.11000000000000000
    No. 10
    0.195"0.354"0.020" to 0.025"82°
    ASME B18.21.1250000000000000
    No. 12
    0.220"0.421"0.020" to 0.025"82°
    ASME B18.21.1500000000000000
    1/4"
    0.255"0.454"0.020" to 0.025"82°
    ASME B18.21.1250000000000000
    5/16"
    0.318"0.599"0.023" to 0.028"82°
    ASME B18.21.1250000000000000
     
    Zinc-Plated Steel
    No. 4
    0.113"0.213"0.015" to 0.019"82°
    ASME B18.21.15000000000000000
    No. 6
    0.140"0.289"0.017" to 0.021"82°
    ASME B18.21.110000000000000000
    No. 8
    0.167"0.322"0.017" to 0.021"82°
    ASME B18.21.110000000000000000
    No. 10
    0.195"0.354"0.020" to 0.025"82°
    ASME B18.21.15000000000000000
    No. 12
    0.220"0.421"0.020" to 0.025"82°
    ASME B18.21.110000000000000000
    1/4"
    0.255"0.458"0.022"82°
    ASME B18.21.110000000000000000
    5/16"
    0.318"0.599"0.023" to 0.028"82°
    ASME B18.21.110000000000000000
    3/8"
    0.383"0.765"0.028" to 0.034"82°
    ASME B18.21.12500000000000000
    1/2"
    0.512"0.976"0.037" to 0.045"82°
    ASME B18.21.1100000000000000
    M3
    3.2 mm6.0 mm0.2 mm to 0.3 mm90°
    DIN 67981000000000000000
    M4
    4.3 mm8.0 mm0.2 mm to 0.3 mm90°
    DIN 67981000000000000000
    M5
    5.3 mm9.8 mm0.3 mm to 0.4 mm90°
    DIN 6798500000000000000
    M6
    6.4 mm11.8 mm0.4 mm to 0.5 mm90°
    DIN 679850000000000000
    M8
    8.4 mm15.3 mm0.4 mm to 0.5 mm90°
    DIN 6798500000000000000
    M10
    10.5 mm19.0 mm0.5 mm to 0.6 mm90°
    DIN 679825000000000000
    M12
    13.0 mm23.0 mm0.5 mm to 0.6 mm90°
    DIN 6798250000000000000
     
    Black-Oxide Steel
    No. 4
    0.113"0.213"0.015" to 0.019"82°
    ASME B18.21.1250000000000000
    No. 6
    0.140"0.289"0.017" to 0.021"82°
    ASME B18.21.12500000000000000
    No. 8
    0.167"0.322"0.017" to 0.021"82°
    ASME B18.21.1250000000000000
    No. 10
    0.195"0.354"0.020" to 0.025"82°
    ASME B18.21.1250000000000000
    No. 12
    0.220"0.421"0.020" to 0.025"82°
    ASME B18.21.1250000000000000
    1/4"
    0.255"0.454"0.020" to 0.025"82°
    ASME B18.21.1250000000000000
    5/16"
    0.318"0.599"0.023" to 0.028"82°
    ASME B18.21.1250000000000000
    3/8"
    0.383"0.765"0.028" to 0.034"82°
    ASME B18.21.1250000000000000
    1/2"
    0.512"0.976"0.037" to 0.045"82°
    ASME B18.21.11000000000000000
     

    Tooth Lock Washer Assortments

    Image of Product. Front orientation. Lock Washers. Sold as Assortments, Tooth Washer.
    Keep a collection of tooth lock washers on hand to work with a range of screw sizes. The teeth bite into material to prevent fasteners from loosening in applications with constant movement, such as conveyors. External-tooth lock washers grip tighter than internal-tooth lock washers, however, they may mar your material and snag on objects. Tooth lock washers typically can't be reused because the teeth often get bent when tightened.
    Labels in the lid include our part numbers, so it's easy to replenish the assortments.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    No. of
    Pieces
    Sizes Included
    Container
    Type
    Each
    Zinc-Plated Steel
    1,335635 External Tooth Lock Washers (For No. 4 to 1/2" Screw Sizes)
    700 Internal Tooth Lock Washers (For No. 2 to 3/8" Screw Sizes)
    Plastic Box000000000000000
     

    Spring Lock Washers for Slotted Bearing Nuts

    Image of System. Front orientation. Contains Annotated. For Chamfered Nuts. Spring Lock Washer.
    Image of Attribute. Front orientation. Contains MultipleImages. For Chamfered Nuts.

    For Chamfered Nuts

    Designed for use with bearing nuts, these lock washers have a conical shape that presses like a spring against bearings, bushings, gears, and pulleys to hold them in place on your threaded shaft or spindle. They also have an inner tab that sits in the shaft or spindle’s keyway to prevent the nut from loosening.
    Steel—Steel washers are strong and flexible.
    Stainless Steel—Stainless steel washers are more corrosion and chemical resistant than steel washers.
    External Tooth—Washers with external teeth grip components using their teeth, in addition to spring tension.
    DIN 5406—DIN 462 and DIN 5406 washers meet international standards for lock washer dimensions. Pair DIN 462 washers with DIN 1804 bearing nuts, and DIN 5406 washers with DIN 981 bearing nuts.
    Tab
    For Screw
    Size
    ID
    OD
    Thk.
    Wd.
    Dp.
    Overall
    Ht.
    Tooth
    Location
    Hardness
    Specs. Met
    For Bearing Nut
    Specs. Met
    Each
    For Chamfered Nuts
     
    Steel
    3/8"
    0.406"0.875"0.046"0.120"0.063"0.125"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.200000000000000
    7/16"
    0.484"1.016"0.046"0.120"0.064"0.148"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    9/16"
    0.601"1.156"0.046"0.120"0.066"0.172"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    5/8"
    0.679"1.328"0.046"0.120"0.067"0.195"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    3/4"
    0.801"1.531"0.046"0.176"0.062"0.203"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    15/16"
    0.989"1.719"0.054"0.176"0.072"0.221"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    1 1/8"
    1.193"1.922"0.054"0.176"0.093"0.213"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    1 5/16"
    1.333"2.234"0.067"0.176"0.106"0.217"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    1 3/8"
    1.396"2.250"0.054"0.176"0.094"0.221"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    1 1/2"
    1.583"2.469"0.063"0.290"0.095"0.232"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    1 3/4"
    1.792"2.734"0.063"0.290"0.096"0.224"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    1 7/8"
    1.992"2.922"0.063"0.290"0.097"0.239"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    2 1/8"2.182"3.109"0.068"0.290"0.103"0.225"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    2 3/8"2.400"3.344"0.068"0.290"0.124"0.249"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    2 1/2"
    2.588"3.578"0.068"0.290"1/8"0.256"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    2 3/4"
    2.791"3.828"0.068"0.290"1/8"0.256"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    2 7/8"2.973"4.109"0.077"0.290"0.135"0.274"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    3 1/8"3.177"4.375"0.077"0.353"0.132"0.267"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    3 3/8"3.395"4.625"0.077"0.353"0.133"0.298"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    3 1/2"3.582"4.938"0.100"0.353"0.155"0.329"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    3 3/4"3.800"5.219"0.100"0.353"0.156"0.329"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.200000000000000
    3 7/8"3.988"5.500"0.100"0.353"0.171"0.344"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.200000000000000
    4 3/8"4.395"6.063"0.132"0.353"0.203"0.401"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.200000000000000
    4 3/4"4.801"6.469"0.132"0.353"0.204"0.400"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.200000000000000
    M10
    10.000 mm21.000 mm1.000 mm3.000 mm1.500 mm3.000 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M12
    12.000 mm25.000 mm1.000 mm3.000 mm1.500 mm3.000 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M15
    15.000 mm28.000 mm1.000 mm4.000 mm1.500 mm2.500 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M17
    17.000 mm32.000 mm1.000 mm4.000 mm1.500 mm3.000 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M20
    20.000 mm36.000 mm1.000 mm4.000 mm1.500 mm3.500 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M25
    25.000 mm42.000 mm1.250 mm5.000 mm2.000 mm3.500 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M30
    30.000 mm49.000 mm1.250 mm5.000 mm2.500 mm4.000 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M35
    35.000 mm57.000 mm1.250 mm6.000 mm2.500 mm4.500 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M40
    40.000 mm62.000 mm1.250 mm6.000 mm2.500 mm4.000 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M45
    45.000 mm69.000 mm1.250 mm6.000 mm2.500 mm4.500 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M50
    50.000 mm74.000 mm1.250 mm6.000 mm2.500 mm4.500 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M55
    55.000 mm81.000 mm1.250 mm8.000 mm2.500 mm4.500 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M60
    60.000 mm86.000 mm1.500 mm8.000 mm2.500 mm4.500 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M65
    65.000 mm92.000 mm1.500 mm8.000 mm2.500 mm4.500 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M70
    70.000 mm98.000 mm1.500 mm8.000 mm3.500 mm4.500 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M75
    75.000 mm104.000 mm1.500 mm8.000 mm3.500 mm5.000 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M80
    80.000 mm112.000 mm1.750 mm10.000 mm3.500 mm5.500 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M85
    85.000 mm119.000 mm1.750 mm10.000 mm3.500 mm5.500 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M90
    90.000 mm126.000 mm1.750 mm10.000 mm3.500 mm6.000 mmExternalNot RatedDIN 5406DIN 98100000000000000
    M95
    95.000 mm133.000 mm1.750 mm10.000 mm3.500 mm6.500 mmExternalNot RatedDIN 5406DIN 98100000000000000
    M100
    100.000 mm142.000 mm1.750 mm12.000 mm3.500 mm7.000 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M105
    105.000 mm145.000 mm1.750 mm12.000 mm4.500 mm6.000 mmExternalNot RatedDIN 5406DIN 9810000000000000
    M110
    110.000 mm154.000 mm1.750 mm12.000 mm4.500 mm6.500 mmExternalNot RatedDIN 5406DIN 98100000000000000
    M115
    115.000 mm159.000 mm2.000 mm12.000 mm4.500 mm7.000 mmExternalNot RatedDIN 5406DIN 98100000000000000
    M120
    120.000 mm164.000 mm2.000 mm14.000 mm5.000 mm8.000 mmExternalNot RatedDIN 5406DIN 98100000000000000
    M125
    125.000 mm170.000 mm2.000 mm14.000 mm5.000 mm7.000 mmExternalNot RatedDIN 5406DIN 98100000000000000
    M130
    130.000 mm175.000 mm2.000 mm14.000 mm5.000 mm8.000 mmExternalNot RatedDIN 5406DIN 98100000000000000
    M135
    135.000 mm185.000 mm2.000 mm14.000 mm5.000 mm8.000 mmExternalNot RatedDIN 5406DIN 98100000000000000
    M140
    140.000 mm192.000 mm2.000 mm16.000 mm5.000 mm9.500 mmExternalNot RatedDIN 5406DIN 98100000000000000
    M145
    145.000 mm202.000 mm2.000 mm16.000 mm5.000 mm9.000 mmExternalNot RatedDIN 5406DIN 98100000000000000
    M150
    150.000 mm205.000 mm2.000 mm16.000 mm5.000 mm10.000 mmExternalNot RatedDIN 5406DIN 98100000000000000
    M160
    160.000 mm217.000 mm2.500 mm18.000 mm6.000 mm10.500 mmExternalNot RatedDIN 5406DIN 981000000000000000
    M170
    170.000 mm232.000 mm2.500 mm18.000 mm6.000 mm11.500 mmExternalNot RatedDIN 5406DIN 981000000000000000
    M180
    180.000 mm242.000 mm2.500 mm20.000 mm6.000 mm11.500 mmExternalNot RatedDIN 5406DIN 981000000000000000
    M220
    220.000 mm292.000 mm3.000 mm24.000 mm7.000 mm13.000 mmExternalNot RatedDIN 5406DIN 981000000000000000
     
    Stainless Steel
    3/8"
    0.406"0.875"0.046"0.120"0.063"0.125"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    7/16"
    0.484"1.106"0.046"0.120"0.064"0.148"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    9/16"
    0.601"1.156"0.046"0.120"0.066"0.172"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    5/8"
    0.679"1.328"0.046"0.120"0.067"0.195"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    3/4"
    0.801"1.531"0.046"0.176"0.062"0.203"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    15/16"
    0.989"1.719"0.054"0.176"0.072"0.221"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.20000000000000
    1 1/8"
    1.193"1.922"0.054"0.176"0.093"0.213"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.200000000000000
    1 3/8"
    1.396"2.250"0.054"0.176"0.094"0.221"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.200000000000000
    1 1/2"
    1.583"2.469"0.063"0.290"0.095"0.232"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.200000000000000
    1 3/4"
    1.792"2.734"0.063"0.290"0.096"0.224"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.200000000000000
    1 7/8"
    1.992"2.922"0.063"0.290"0.097"0.239"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.200000000000000
    2 1/8"2.182"3.109"0.068"0.290"0.103"0.225"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.200000000000000
    2 3/8"2.400"3.344"0.068"0.290"0.124"0.249"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.200000000000000
    2 1/2"
    2.588"3.578"0.068"0.290"1/8"0.256"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.200000000000000
    2 3/4"
    2.791"3.828"0.068"0.290"1/8"0.256"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.200000000000000
    2 7/8"2.973"4.109"0.077"0.290"0.135"0.274"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.200000000000000
    3 1/8"3.177"4.375"0.077"0.353"0.132"0.267"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.2000000000000000
    3 3/8"3.395"4.625"0.077"0.353"0.133"0.298"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.2000000000000000
    3 1/2"3.582"4.938"0.100"0.353"0.155"0.329"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.2000000000000000
    3 3/4"3.800"5.219"0.100"0.353"0.156"0.329"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.2000000000000000
    3 7/8"3.988"5.500"0.100"0.353"0.171"0.344"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.2000000000000000
    4 3/8"4.395"6.063"0.132"0.353"0.203"0.401"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.2000000000000000
    4 3/4"4.801"6.469"0.132"0.353"0.204"0.400"ExternalNot RatedANSI/ABMA 8.2ANSI/ABMA 8.2000000000000000
     
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