#12-24 Zinc Grade 2 Nylon Insert Lock Nuts (50 pcs.)

Diameter: #12
Diameter 2: 1/2"
Thickness: 21/64"
Material: Steel
Finish: Zinc
Driver Type: 1/2" Wrench
Thread Size: 24 (Coarse)
Hardness: Grade 2
Style: Nylon Insert
Type: Lock Nut

Box of 50.

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