5/16″-24 Polished 18-8 Stainless Steel Fine Thread Nylon Insert Lock Nuts

Description

Diameter: 5/16″
Diameter 2: 9/16″
Thickness: 11/32″
Material: Stainless Steel
Finish: Polished
Driver Type: 1/2″ Wrench
Thread Size: 24 (Fine)
Hardness: 18-8
Style: Nylon Insert
Type: Lock Nut

Box of 6.

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