Serrated Flange Lock Nuts - (SAE) Fine Thread

These are serrated flange lock nuts in SAE fine thread. Each nut has a built-in flange that spreads the load, and the serrated underside bites in to hold against vibration. That makes them a one-piece replacement for a nut, flat washer and lock washer. They are zinc plated in sizes 10-32 to 5/8"-18 for automotive and equipment work.

Serrated Flange Lock Nuts - (SAE) Fine Thread | The Nutty Company, Inc.

Specifications

Style: hex flange nut with serrated bearing face
Thread: SAE fine (UNF)
Sizes: #10-32, 1/4"-28, 5/16"-24, 3/8"-24, 7/16"-20, 1/2"-20, 5/8"-18
Finish: zinc plated

Common Uses

Automotive body and chassis fasteners
Fine thread studs on equipment
Brackets and mounts that see vibration

FAQ

Can I use a washer under a serrated flange nut?
It isn't recommended. A washer stops the serrations from gripping the surface, which removes the locking action.

Are serrated flange nuts reusable?
Yes, in many cases. They have no nylon to wear out, but check that the serrations are still sharp.

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.