#8 x 5/32" x 11/32" 18-8 Stainless Internal Tooth Lock Washers (30 pcs.)

Diameter: 5/32"
Thickness: 3/64"
Material: Stainless Steel
Hardness: 18-8
Nominal Size: #8
Style: Internal Tooth
Type: Lock Washer
Application: Smaller head screws

Box of 30.

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