NORD-LOCK Wedge Lock Washer: For Screw Size M12, Steel, Delta Protect, 0.51 in Inside Dia, 10 PK - 12W455|1530 - Grainger
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NORD-LOCK Wedge Lock Washer: For Screw Size 3/8 in, Steel, Delta Protect, 0.41 in Inside Dia, 10 PK - 12W451|1526 - Grainger
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