1/2" x 3/4" Plain Steel High Collar Lock Washers

Diameter: 1/2"
Diameter 2: 3/4"
Thickness: 5/32"
Material: Steel
Finish: Plain
Style: High Collar Split
Type: Lock Washer
Application: Confined Areas

Box of 48.

The purpose for a lock washer is to prevent threaded fasteners from loosening by creating friction between the fastener and the mounting surface.