Lock Washer,Bolt M12,254 SMO SS,PK6 PK 4. Lock Washer, 254 SMO Stainless Steel, Finish Plain, Fits Bolt Sizes M12, Inside Dia. 0.51 In., Outside Dia. 0.77 In., Thickness 0.08 In., Thickness Tolerance +/-. 01, Color Silver, Rockwell Hardness Min.
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