5/16" x 9/16" Chrome Plated Grade 2 Steel AN Washers (10 pcs.)

Diameter: 5/16"
Diameter 2: 9/16"
Thickness: 1/16"
Material: Steel
Finish: Chrome
Thread Type: AN
Hardness: Grade 2
Nominal Size: 5/16"
Style: AN
Type: Flat Washer

Box of 10.

A flat washer is a thin, usually round, plate with a hole in the middle that is normally used to distribute the load of a threaded fastener. USS flat washers have a large, wider body. SAE flat washers are machined to a tighter specification and have a smaller outside diameter.