#8 x 5/32" x 21/64" Zinc Grade 2 External Tooth Lock Washers LWS-192 (100 pcs)

Diameter: 5/32"
Diameter 2: 21/64"
Thickness: 3/64"
Material: Steel
Finish: Zinc
Hardness: Grade 2
Nominal Size: #8 (5/32")
Style: External Tooth
Type: Lock Washer
Application: Round|pan|or binding head

Box of 100.

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