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    82 Products

    Rotating Flange Nuts
    3D CAD models available

    The head of these nuts rotates while the flange remains stationary, so you won't scratch the surface of finished parts as you tighten. They distribute pressure evenly across the mounting surface without the need for a separate washer. Also known as collar nuts.
    Steel
    Image of Product. Front orientation. Contains Annotated. Flange Nuts. Rotating Flange Nuts.
    Black-Oxide Steel—Typically chosen for their appearance, these nuts have a dark, matte coating that creates a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
    Flange
    Thread Size
    Wd.
    Ht.
    Dia.
    Thk.
    Material
    Each
    Black-Oxide Steel
    1/4"-20
    1/2"3/8"5/8"0.13"Steel00000000000000
    1/4"-28
    1/2"3/8"5/8"0.13"Steel0000000000000
    5/16"-18
    9/16"7/16"3/4"0.14"Steel0000000000000
    5/16"-24
    9/16"7/16"3/4"0.14"Steel0000000000000
    3/8"-16
    11/16"17/32"7/8"0.16"Steel0000000000000
    3/8"-24
    11/16"17/32"7/8"0.16"Steel0000000000000
    1/2"-13
    7/8"23/32"1 1/8"0.22"Steel0000000000000
    1/2"-20
    7/8"23/32"1 1/8"0.22"Steel0000000000000
    5/8"-11
    1 1/16"29/32"1 3/8"0.25"Steel0000000000000
    5/8"-18
    1 1/16"29/32"1 3/8"0.25"Steel0000000000000
    3/4"-10
    1 1/4"1 1/64"1 5/8"0.28"Steel0000000000000
    3/4"-16
    1 1/4"1 1/64"1 5/8"0.28"Steel00000000000000
    7/8"-9
    1 7/16"1 1/8"1 3/4"0.44"Steel00000000000000
    7/8"-14
    1 7/16"1 1/8"1 3/4"0.44"Steel00000000000000
    1"-8
    1 5/8"1 15/64"2"0.47"Steel00000000000000
    1"-12
    1 5/8"1 15/64"2"0.47"Steel00000000000000
    M6 × 1 mm13 mm9.5 mm15.9 mm3.2 mmSteel0000000000000
    M8 × 1.25 mm14 mm11.1 mm19 mm3.6 mmSteel0000000000000
    M10 × 1.5 mm17 mm13.5 mm22.2 mm5.6 mmSteel0000000000000
    M12 × 1.75 mm22 mm18.3 mm28.6 mm5.6 mmSteel0000000000000
    M16 × 2 mm27 mm23 mm34.9 mm6.4 mmSteel0000000000000
    M20 × 2.5 mm37 mm28.6 mm44.5 mm11.1 mmSteel00000000000000
    M24 × 3 mm41 mm31.3 mm50.8 mm11.9 mmSteel00000000000000
     

    Locknuts with External-Tooth Lock Washer
    3D CAD models available

    To save on assembly time, these locknuts combine a hex nut with a free-spinning lock washer, so you can twist them into place by hand. Once the nut is against your material surface, tighten it down with a wrench or socket to get the teeth to bite. Although these nuts install more quickly than nylon-insert locknuts, they don't hold up as well against vibration and can mar your material. As long as the washer stays intact, you can reuse them. Also known as Keps and K-lock nuts.
    Medium-Strength Steel
    Image of Product. Front orientation. ZoomedIn view. Locknuts. Locknuts with External-Tooth Lock Washer.
    These Grade 5 or Class 8 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Black Zinc-Plated Steel—The dark zinc plating withstands occasional exposure to moisture while creating a finished look.
    Thread Size
    Wd.,
    mm
    Ht.,
    mm
    Fastener Strength
    Grade/Class
    Washer
    OD, mm
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    M3 × 0.5 mm5.53.3ISO Class 8
    7.1100000000000000000
    M4 × 0.7 mm74.1ISO Class 8
    8.510000000000000000
    M5 × 0.8 mm85.2ISO Class 8
    9.510000000000000000
    M6 × 1 mm106.2ISO Class 8
    1210000000000000000
    M8 × 1.25 mm138.5ISO Class 8
    15.5250000000000000
    M10 × 1.5 mm179.7ISO Class 8
    20.11000000000000000
     
    Black Zinc-Plated Steel
    M3 × 0.5 mm5.53ISO Class 8
    7.110000000000000000
    M4 × 0.7 mm74.1ISO Class 8
    8.510000000000000000
    M5 × 0.8 mm85.2ISO Class 8
    9.510000000000000000
    M6 × 1 mm106.2ISO Class 8
    125000000000000000
    M8 × 1.25 mm138.5ISO Class 8
    15.52500000000000000
    M10 × 1.5 mm179.7ISO Class 8
    20.11000000000000000
     
    Low-Strength Steel
    Image of Product. Front orientation. ZoomedIn view. Locknuts. Locknuts with External-Tooth Lock Washer.
    Rated Grade 2, Class 6, or lower, these locknuts are about half as strong as medium-strength steel nuts. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Black Zinc-Plated Steel—The dark zinc plating withstands occasional exposure to moisture while creating a finished look.
    Thread
    Size
    Wd.
    Ht.
    Washer
    OD
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    4-40
    1/4"7/64"0.281"10000000000000000
    5-40
    5/16"9/64"0.344"10000000000000000
    6-32
    5/16"9/64"0.344"1000000000000000
    8-32
    11/32"5/32"0.375"1000000000000000
    10-24
    3/8"5/32"0.406"1000000000000000
    10-32
    3/8"5/32"0.406"1000000000000000
    12-24
    7/16"3/16"0.5"5000000000000000
    1/4"-20
    7/16"15/64"0.5"1000000000000000
    1/4"-28
    7/16"15/64"0.5"1000000000000000
    5/16"-18
    1/2"21/64"0.578"10000000000000000
    5/16"-24
    1/2"5/16"0.592"5000000000000000
    3/8"-16
    9/16"25/64"0.656"10000000000000000
    3/8"-24
    9/16"25/64"0.656"10000000000000000
    1/2"-13
    3/4"31/64"0.891"1000000000000000
     
    Black Zinc-Plated Steel
    4-40
    1/4"1/8"0.281"1000000000000000
    6-32
    5/16"9/64"0.344"1000000000000000
    8-32
    11/32"5/32"0.375"1000000000000000
    10-24
    3/8"5/32"0.406"10000000000000000
    10-32
    3/8"5/32"0.406"10000000000000000
    1/4"-20
    7/16"7/32"0.5"10000000000000000
     
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. ZoomedIn view. Locknuts. Locknuts with External-Tooth Lock Washer.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these locknuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They resist rust in wet and outdoor environments, but won't hold up to the harsh chemicals that 316 stainless steel can.
    Thread Size
    Wd.
    Ht.
    Washer
    OD
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    4-40
    1/4"1/8"0.281"10000000000000000
    4-48
    1/4"1/8"0.281"10000000000000000
    6-32
    5/16"9/64"0.344"1000000000000000
    8-32
    11/32"11/64"0.375"10000000000000000
    10-24
    3/8"11/64"0.406"10000000000000000
    10-32
    3/8"11/64"0.406"10000000000000000
    12-24
    7/16"11/64"0.5"5000000000000000
    1/4"-20
    7/16"15/64"0.5"5000000000000000
    1/4"-28
    7/16"15/64"0.5"5000000000000000
    5/16"-18
    1/2"21/64"0.578"250000000000000
    5/16"-24
    1/2"21/64"0.578"2500000000000000
    3/8"-16
    9/16"25/64"0.656"2500000000000000
    3/8"-24
    9/16"25/64"0.656"100000000000000
    1/2"-13
    3/4"7/16"0.871"100000000000000
    M3 × 0.5 mm5.5 mm3.3 mm6.5 mm5000000000000000
    M4 × 0.7 mm7 mm4.1 mm8.2 mm5000000000000000
    M5 × 0.8 mm8 mm5.2 mm9.5 mm250000000000000
    M6 × 1 mm10 mm6.2 mm11.5 mm250000000000000
    M8 × 1.25 mm13 mm8.5 mm15.1 mm50000000000000
    M10 × 1.5 mm17 mm9.7 mm19.2 mm500000000000000
     
    Black-Oxide 18-8 Stainless Steel
    M3 × 0.5 mm5.5 mm3.3 mm6.5 mm250000000000000
    M4 × 0.7 mm7 mm4.1 mm8.2 mm2500000000000000
    M5 × 0.8 mm8 mm5.2 mm9.5 mm2500000000000000
    M6 × 1 mm10 mm6.2 mm11.5 mm2500000000000000
     

    Narrow-Profile Locknuts with External-Tooth Lock Washer
    3D CAD models available

    Image of Product. Front orientation. Locknuts. Narrow-Profile Locknuts with External-Tooth Lock Washer.
    Since they're about 20% narrower, these locknuts fit in tight spaces where standard-profile nuts won't fit. They combine a hex nut with a free-spinning lock washer, so you can twist them into place by hand and save on assembly time. Once the nut is against your material surface, tighten it down with a wrench or socket to get the teeth to bite. Although these nuts install more quickly than nylon-insert locknuts, they don't hold up as well against vibration and can mar your material. As long as the washer stays intact, you can reuse them. Also known as Keps and K-lock nuts.
    Low-Strength Steel
    Rated Grade 2, Class 6, or lower, these locknuts are about half as strong as medium-strength steel nuts. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Thread
    Size
    Wd.
    Ht.
    Washer
    OD
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    6-32
    1/4"1/8"0.281"100000000000000000
    8-32
    5/16"9/64"0.344"10000000000000000
     
    Corrosion-Resistant Stainless Steel
    18-8 Stainless Steel—The choice for wet and outdoor environments, these locknuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Thread
    Size
    Wd.
    Ht.
    Washer
    OD
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    6-32
    1/4"3/32"0.344"100000000000000000
     
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