Lock washers add spring tension or bite beneath a fastener head or nut, helping resist loosening from vibration.
Nominal Size: 5/16"
Inside Diameter: 5/16"
Outside Diameter: 11/16"
Thickness: 1/16"
Material: Steel
Finish: Zinc
Hardness: Grade 2
Style: External Tooth
Type: Lock Washer
Application: Round|pan|or binding head
The purpose for a lock washer is to prevent threaded fasteners from loosening by creating friction between the fastener and the mounting surface.
