5/16″-24 Zinc Plated Grade 2 Steel Fine Thread Top Lock Nuts

Description

Diameter: 5/16″
Diameter 2: 9/16″
Thickness: 17/64″
Material: Steel
Finish: Zinc
Driver Type: 1/2″ Wrench
Thread Size: 24 (Fine)
Hardness: Grade 2
Style: Top Lock|Type C
Type: Lock Nut

Box of 16.

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