Nord-Lock Washers are a highly effective Anti-Vibration Locking Washer solution, created by Nord-Lock Group. Accu also supplies various types of Locking Nuts for other anti-vibration solutions.
Nord Lock Wedge-Locking Solution
Nord-Lock’s innovative wedge-locking solution is designed to prevent bolts from loosening by securing them to a nut or mating component with tension, as opposed to friction, as with traditional locking components. Each Nord-Lock Washer is supplied as a glued pair, with the two washers specifically designed to work in tandem to create the wedge lock.
The Nord-Lock washer features cams on the inside which attach together, forming the wedge, whilst the radial serrations on the outside are designed to grip to the mating surface material and underside of the bolt respectively. As the cam inclination is at a greater angle than that of the thread pitch of the bolt, this creates a wedge-effect under the head of the bolt. As a result, the tension fastening is preventing the nut from rotating and thus stops the bolt from working loose by accident.
All Nord-Lock Washers are manufactured with a laser mark of the Nord-Lock brand name to confirm authenticity, along with traceability information on the component itself.
Anti-Vibration Junker Test Certified Lock Washers
The preload of this fastening is even maintained efficiently under exposure to harsh vibrations, with many independent tests, such as Junker Vibration Tests, and certification authorities confirming the effectiveness of the Nord-Lock wedge-locking system. The Junker test, according to DIN 65151, is commonly seen as the most rigorous method for testing bolted joints. This test involves the exposure of the fastening to extreme vibrations, continually monitoring the clamping force of the fasteners to assess anti-vibration capabilities under transverse movements.
Accu also offers Thread Locking Patches which can be applied to our range of Stainless Steel Screws and Bolts, which help to resist vibration-related loosening and leakage on threaded components. Locking Nuts are also available, including the popular self-locking Aerotight Nuts.
Bespoke Nord Lock Washers Manufacture
High precision, bespoke manufacture of Nord Lock Washers to customer specification. State of the art facilities specialising in both small batch prototyping and large scale manufacture.