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    34 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.
    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 B18.21.110090588A11100000
    No. 6
    0.141"0.510"0.023" to 0.028"ASME B18.21.110090588A1120000
    No. 8
    0.168"0.610"0.028" to 0.034"ASME B18.21.110090588A1130000
    No. 10
    0.195"0.610"0.028" to 0.034"ASME B18.21.110090588A1140000
    1/4"
    0.256"0.760"0.032" to 0.040"ASME B18.21.15090588A1150000
    5/16"
    0.320"0.900"0.032" to 0.040"ASME B18.21.15090588A1160000
    3/8"
    0.384"0.985"0.037" to 0.045"ASME B18.21.12590588A1170000
    1/2"
    0.512"1.260"0.047" to 0.055"ASME B18.21.11090588A1180000
     
    Zinc-Plated Steel
    No. 4
    0.116"0.478"0.016" to 0.018"ASME B18.21.15095795A0050000
    No. 6
    0.142"0.506"0.023" to 0.027"ASME B18.21.15095795A0060000
    No. 8
    0.168"0.506"0.023" to 0.027"ASME B18.21.110095795A00700000
    No. 10
    0.195"0.601"0.027" to 0.031"ASME B18.21.110095795A01200000
    1/4"
    0.256"0.760"0.033" to 0.037"ASME B18.21.110095795A02000000
    5/16"
    0.320"0.898"0.033" to 0.037"ASME B18.21.15095795A02400000
    3/8"
    0.384"0.985"0.037" to 0.041"ASME B18.21.15095795A03000000
    7/16"
    0.448"1.070"0.043" to 0.047"ASME B18.21.11095795A0320000
    1/2"
    0.512"1.260"0.048" to 0.052"ASME B18.21.12595795A0350000
    5/8"
    0.640"1.620"0.060" to 0.064"ASME B18.21.1595795A05300000
    M3
    3.2 mm12.0 mm1.4 mm to 1.7 mm5095795A11100000
    M4
    4.3 mm15.0 mm1.9 mm to 2.3 mm5095795A11200000
    M4
    4.3 mm18.0 mm2.2 mm to 2.6 mm2595795A1130000
    M5
    5.3 mm18.0 mm2.2 mm to 2.6 mm2595795A11400000
    M6
    6.5 mm18.0 mm2.2 mm to 2.6 mm2595795A11500000
    M8
    8.5 mm22.0 mm2.7 mm to 3.3 mm2595795A11600000
    M10
    10.5 mm26.0 mm2.7 mm to 3.3 mm1095795A11700000
    M12
    12.5 mm30.0 mm3.2 mm to 4.0 mm1095795A11800000
    M16
    16.5 mm35.0 mm3.8 mm to 4.6 mm595795A11900000
     
    Black-Oxide Steel
    No. 6
    0.142"0.506"0.023" to 0.027"ASME B18.21.110090416A1110000
    No. 8
    0.168"0.506"0.023" to 0.027"ASME B18.21.110090416A11200000
    1/4"
    0.256"0.760"0.033" to 0.037"ASME B18.21.110090416A11400000
    5/16"
    0.320"0.898"0.033" to 0.037"ASME B18.21.15090416A11500000
    3/8"
    0.384"0.985"0.037" to 0.041"ASME B18.21.12590416A11600000
    7/16"
    0.448"1.070"0.043" to 0.047"ASME B18.21.12590416A11700000
    1/2"
    0.512"1.260"0.048" to 0.052"ASME B18.21.11090416A1180000
     
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