Serrated Flange Lock Nuts - (USS) Coarse Thread

Serrated flange lock nuts have a wide flange with serrations on the underside. The flange spreads the load like a washer, and the serrations grip the surface to resist loosening. No separate washer or lock washer is needed. These come in USS coarse thread and machine screw sizes, #6-32 through 5/8"-11, all zinc plated.

Serrated Flange Lock Nuts - (USS) Coarse Thread | The Nutty Company, Inc.

Specifications

Style: hex flange nut with serrated bearing face
Thread: USS coarse (UNC) / machine screw
Sizes: #6-32, #8-32, #10-24, 1/4"-20, 5/16"-18, 3/8"-16, 7/16"-14, 1/2"-13, 5/8"-11
Finish: zinc plated

Common Uses

Sheet metal, panels and enclosures
Automotive and equipment brackets
Fast assembly with no separate washer

FAQ

Do serrated flange nuts damage the surface?
The serrations are designed to bite in, so they can mark paint or soft metal. On finished surfaces, use a nylon insert lock nut with a washer instead.

Serrated flange nut or nylon lock nut?
Serrated flange nuts lock against the surface and handle heat well. Nylon insert nuts lock on the threads, which is better on soft materials.

Free shipping on orders over $100, and orders placed before noon EST ship the same day. Purchase orders are accepted from government agencies, schools, hospitals, municipalities and companies with established credit with The Nutty Company, Inc.