#6-32 Black Zinc Plated Steel Coarse Thread Nylon Insert Lock Nuts (20 pcs.)

Diameter: #6
Diameter 2: 11/32"
Thickness: 3/16"
Material: Steel
Finish: Black Zinc
Driver Type: 5/16" Wrench
Thread Size: 32 (Coarse)
Style: Nylon Insert
Type: Lock Nut

Box of 20.

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