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Nylon-Insert Hex Nuts
By Gordon DeWitte On September 14, 2009 · 22 Comments · In Ace Hardware, Fasteners, Home Depot, Lowe's

Lex’s recent post on captive nuts reminded me of some other nuts I’ve been using a lot lately while doing some volunteer work on a search-and-rescue van: nylon-insert hex nuts. Depending on which big box you shop at, and whom you ask when there, they’re also called stop nuts, locknuts, or nyloks (although NYLOK® is a nylon material typically applied to bolts and screws), or nylocks. I like them because they resist vibration and loosening, they’re reusable, they don’t damage threads, and they’re readily available. McMaster-Carr has a large variety in their catalog, and many of the big boxes carry Hillman versions.
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