1/4"-20 Nylon Plastic Coarse Thread Lock Nuts (10 pcs.)

Diameter: 1/4"
Diameter 2: 1/2"
Thickness: 1/4"
Material: Nylon
Driver Type: 7/16" Wrench
Thread Size: 20 (Coarse)
Type: Lock Nut

Box of 10.

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