Schnorr M8 x 13 x 0.7mm Type S Safety Washer Serrated Black 200pk

Type S Safety Washer Serrated Plain Black is engineered to secure bolted joints against vibration, dynamic load and thermal cycling through a wedge-locking cam action. Unlike friction-based locking solutions, the cam angle of the washer is greater than the bolt thread pitch, so any rotation actually increases clamping tension on the joint. Suited to heavy machinery, rail rolling stock and infrastructure, mining and quarry equipment, wind turbines and renewable energy installations, offshore and marine assemblies, and structural engineering connections where bolt failure is not an option. Manufactured by Nord-Lock to engineering standards trusted by critical-fastening engineers worldwide. Built to maintain preload through repeat vibration and dynamic loading.