1/4-20 HFLN BO STV

Hex Flange Lock Nut, 1/4-20, Black Oxide Finish Hex Nuts are the most common nuts for general fastening applications. Flange nuts distribute holding pressure and reduce stress where the nut meets the material surface. Their wide base eliminates the need for a separate washer. Locknuts have a locking feature to resist loosening under vibration.