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The Noltlock loosening system consists of 2 washers and is used facing the inner cam and the cam surface. The angle of the cam (α) is larger than the bolt screw lead angle (beta) and the outside is engraved with a radial rib. When the Nordlock is set into the bolt nut and tightened, the cam face and the cam face of the two washers will be set automatically. For further tightening, the outer radial ribs are held together to the underside of the opposite material and bolt nut. Therefore, when the bolt nut attempts to rotate to loosen due to vibration or impact, it can only be rotated on the inner cam and the cam surface. The inner cam angle (α) is designed to be larger than the screw lead angle (beta), so it is not easy to get through the cam
