3/4" x 1-1/4" Zinc Plated Grade 5 Steel Split Lock Washers

Diameter: 3/4"
Diameter 2: 1-1/4"
Thickness: 7/32"
Material: Steel
Finish: Zinc
Hardness: Grade 5
Style: Medium Split
Type: Lock Washer
Application: Nuts and Bolts

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.