Diameter: 1/4 inch

Diameter 2: 9/16 inch

Thickness: 1/16 inch

Material: Steel

Finish: Zinc Plated

Thread Type: SAE

Hardness: Grade 2

Nominal Size: #12

Type: Flat Washer

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.