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Your cart is empty. These washers have cams or wedges on one side, with a lead angle greater than a thread angle, and radial teeth or ribs on the other side. The washers are installed cam face to cam face. When tightening the fastener to preload, the teeth penetrate and seat against the joint material and the nut and/or fastener head. When subjected to vibration the interacting cams create a wedge action which prevents the fastener from vibrating loose.
Vibration Proof Lock Washers
For Use With Grade 5 & Grade 8 Bolts
Zinc Plated
Material: Carbon Steel
Hardness: Through Hardened: Min. 44HRC, Max. 51 HRC
Bolt Size: 9/16? (14mm)
O.D.: 29/32?
20 (10 Pair) Per Package
Derek Moretz
Reviewed in the United States on February 6, 2024
Used these on a mag tube on my shot🔫, they work fine but still used loctite on the threads anyway. Great product otherwise.
Mitch H.
Reviewed in the United States on May 11, 2022
lock the clutch side crankshaft drive gear on a Bultaco Astro.
Gary S.
Reviewed in the United States on January 6, 2019
They're expensive.... But they do EXACTLY what they claim to do.
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