5/16"-18, Grade G Flange Top Lock Nut, Plain UNC (Coarse), 1 ea

All metal top-lock prevailing torque flange nuts - loosening of nut prenvented by friction between the nut threads and the bolt. The bottom flange acts as a washer to distribute force over a larger area of the fastening surface.

For additional information on this item call Ron Lane at 843-669-8225 or email ronlane@boltmax.com.