7/16"-14 Black Phosphate Grade 2 Lock Nuts LNS-416 (192 pcs.)

Diameter: 7/16"
Diameter 2: 23/32"
Thickness: 3/8"
Material: Steel
Finish: Black Phosphate
Driver Type: 11/16" Wrench
Thread Size: 14 (Coarse)
Hardness: Grade 2
Style: Top Lock|Type C
Type: Lock Nut

Box of 192.

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