7/16"-14 316 Stainless Steel Coarse Thread Lock Nuts (6 pcs.)

Diameter: 7/16"
Diameter 2: 45/64"
Material: Stainless Steel
Driver Type: 11/16" Wrench
Thread Size: 14 (Coarse)
Hardness: 316
Type: Lock Nut

Box of 6.

A lock nut is a nut that resists loosening under vibrations and torque.