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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 B18.21.110000000000000000
    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 mm—5000000000000000
    M4
    		4.3 mm15.0 mm1.9 mm to 2.3 mm—5000000000000000
    M4
    		4.3 mm18.0 mm2.2 mm to 2.6 mm—250000000000000
    M5
    		5.3 mm18.0 mm2.2 mm to 2.6 mm—2500000000000000
    M6
    		6.5 mm18.0 mm2.2 mm to 2.6 mm—2500000000000000
    M8
    		8.5 mm22.0 mm2.7 mm to 3.3 mm—2500000000000000
    M10
    		10.5 mm26.0 mm2.7 mm to 3.3 mm—1000000000000000
    M12
    		12.5 mm30.0 mm3.2 mm to 4.0 mm—1000000000000000
    M16
    		16.5 mm35.0 mm3.8 mm to 4.6 mm—500000000000000
     
    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
     
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