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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: 1/2? (12mm)
O.D.: 49/64?
20 (10 Pair) Per Package
EMK
2024-12-15 16:12:40
These are nice, but maybe not aviation grade hardware.
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