Nord Lock Washers Specifications

Wedges on the inside lock the two pieces together and serrations on the exterior grip surfaces to resist loosening from high vibration and shifting.

Nord lock washers specifications.

Nord lock washers are rigorously tested in all steps of production to verify that the quality requirements are met. Washers with a standard outer diameter are the most commonly used but if you have an enlarged or slotted hole we recommend washers with an enlarged. Nord lock wedge locking technology secures bolted joints exposed to severe vibration and dynamic loads superbolt technology eliminates unsafe and time consuming bolting methods boltight tensioning tools provide fast accurate and safe tightening of multiple bolts simultaneously the expander system provides a simple and cost effective solution to lug wear. Also known as nord lock washers these two piece washers provide more locking power than split tooth and spring lock washers.

The outer diameter of regular nord lock washers is designed for counterbore holes according to din 974 i e. It prevents the loosening of the bolt due to vibration or dynamic loads. Each batch is assigned a control number which ensures full traceability and confirms that the washer is a genuine nord lock article. Product specifications nord lock is a certified fastening system utilizing the wedge effect that makes the mating bolt self locking.

Nord lock washers provide more than just a safe locking function using our washers also improves the general performance of a bolted joint. Nl6 washers fit with m6 bolt nl1 2 fits with 1 2 bolt. Nord lock steel construction sc washers are specially designed to fit both hv and hr bolts and nuts and directly replace standard plain chamfered washers en 14399 6. Nord lock wedge locking washers are available for a wide range of bolt sizes and washer materials include steel stainless steel 254 smo and more.

The washers fit under the head of standard bolts. In order to ensure an optimal contact surface between the bolt and the washer each sc washer pair has chamfers on the inner diameter. The control number is printed on the. Highest corrosion resistance tested nord lock steel washer promises the highest corrosion resistance on the market.

The washers have been tested with at least 1 000 hours in the neutral salt spray test ensuring optimum performance over time even in the. For a steel bolt use steel washers and for a stainless steel bolt use stainless steel washers. Through holes as for all locking washers through holes require two pairs of nord lock washers one pair for securing the bolt and a second pair for securing the nut. Nord lock washers consistently outperform the competition in this challenging environment.

These are more usually used on industrial oil field sectors and some other critical applications.