Diameter: 5/16"
Diameter 2: 45/64"
Thickness: 1/16"
Material: Steel
Finish: Chrome
Hardness: Grade 8
Nominal Size: 5/16"
Style: Internal Tooth
Type: Lock Washer
Application: Smaller head screws
Box of 10.
The purpose for a lock washer is to prevent threaded fasteners from loosening by creating friction between the fastener and the mounting surface.
