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Monster Fastener #10 x 3/16" x 21/64" Zinc Plated Grade 2 Steel Split Lock Washers

Monster Fastener

Options

Diameter: 3/16"
Diameter 2: 21/64"
Thickness: 3/64"
Material: Steel
Finish: Zinc
Hardness: Grade 2
Style: Medium Split
Type: Lock Washer
Application: Nuts and Bolts

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