Nominal Size: #4
Inside Diameter: 7/64"
Outside Diameter: 9/32"
Thickness: 1/32"
Material: Stainless Steel
Hardness: 18-8
Style: Internal Tooth
Type: Lock Washer
Application: Smaller head screws
Box of 50.
The purpose for a lock washer is to prevent threaded fasteners from loosening by creating friction between the fastener and the mounting surface.
