M3 M4 M5 M6 M8 M10 M12 LOCK WASHERS EXTERNAL TOOTHED SERRATED SHAKEPROOF BZP

They work well with larger headed bolts or screws. M8 (8.4mm). Serrated Lock Washers. External Serrated Lock Washers. M4 (4.3mm). M12 (13.0mm). M10 (10.5mm). M6 (6.4mm).

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