Nominal Size: 5/32" (#8)
Inside Diameter: 13/64"
Outside Diameter: 17/32"
Thickness: 7/64"
Material: Aluminum
Style: Cup Washer
Type: Finishing Washer

Protects the surface you are fastening to by preventing the fastener head from sinking into the surface. Also improves the appearance when using countersunk screws. For best results, use a flat head or oval head screw.