A pair of washers for maximum safety

Nord-Lock bolt securing solutions consist of a pair of washers with cams facing each other and serrations gripping the mating surfaces. They use cam-geometry to effectively prevent the bolt from vibrating loose. A hot melt adhesive is used to assemble the washers in pairs. The ingredients of the adhesive meet the compositional requirements of the American Food & Drug Administration regulations 21 CFR 175.105 “Adhesives”. Store dry the washer boxes at -15°C to 25°C (5°F to 77°F).

Applications

Nord-Lock SC-washers can easily replace a standard plain washer as well as chamfered washer to prevent the bolt from rotating loose. They are safe to use with highstrength structural bolting assemblies for preloading and are confirmed for HV-assemblies by the European Technical Assessment ETA-20/0010 issued by the German Institute for Construction Technology (DIBt). SC-washers, NLO, NLSS and 254 SMO® are safe to use in non-preloaded structural bolting assemblies according EN 15048 and confirmed by the ETA-19/0813 issued by the DIBt.