Nord-Lock, based in Tidworth, Wiltshire supply the whole of the U.K. We are global company who manufacture and supply our unique vibration-proof washers. These are used as anti-vibration washers, high performance washers, security washers, anti-vibration fasteners, high performance fasteners, security fasteners, rail infrastructure fasteners. Nord-Lock fastenings are currently used in the engineering, agricultural, manufacturing, maintenance, construction, oil and gas and rail industries. The outside of the washers has radial teeth, which grip and seat the mating surfaces when the Nord-Lock Washer is tightened. In addition, the inside of the washer forms a wedge, making the pitch greater than the thread pitch of the bolt. Using the wedge-locking principle, nuts & bolts cannot come loose when exposed to vibration or dynamic loads Nord-Lock are available in zinc flake coated steel or stainless steel. For further information please click the link to our web-site.