NORD LOCK WEDGE LOCKING WASHER - CARBON STEEL - ZINC FLAKE COATED - 1/4" - PKG OF 20 NORD-LOCK WASHERS SECURE BOLTED JOINTS WITH TENSION INSTEAD OF FRICTION. NORD-LOCK WEDGE LOCK WASHERS HAVE BEEN RIGOROUSLY TESTED AND APPROVED BY INDEPENDENT INSTITUTES AS WELL AS CERTIFICATION AUTHORITIES.
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