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    18 Products

    Split Lock Washers

    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.
    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.
    For Screw
    Size
    ID
    OD
    Thk.
    For Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    No. 4
    		0.120"0.223"0.031"—ASME B18.21.110000000000000000
    No. 6
    		0.148"0.266"0.040"—ASME B18.21.11000000000000000
    No. 8
    		0.174"0.307"0.047"—ASME B18.21.11000000000000000
    No. 10
    		0.200"0.350"0.056"—ASME B18.21.11000000000000000
    1/4"
    		0.260"0.489"0.077"—ASME B18.21.1500000000000000
    5/16"
    		0.322"0.594"0.097"—ASME B18.21.15000000000000000
    3/8"
    		0.385"0.688"0.115"—ASME B18.21.1250000000000000
    1/2"
    		0.512"0.879"0.151"—ASME B18.21.1100000000000000
    5/8"
    		0.641"1.087"0.189"—ASME B18.21.150000000000000
    3/4"
    		0.766"1.285"0.226"—ASME B18.21.110000000000000
     
    Zinc-Plated Steel
    1/4"
    		0.272"0.489"0.062"—ASME B18.21.11000000000000000
    3/8"
    		0.397"0.688"0.094"—ASME B18.21.1500000000000000
    1/2"
    		0.522"0.879"0.125"—ASME B18.21.1250000000000000
     
    Zinc-Yellow-Chromate-Plated Steel
    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
     
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