Diameter: 7/16 inch

Diameter 2: 1 inch

Thickness: 5/64 inch

Material: High-Quality Steel

Finish: Blue Rinsed Zinc

Thread Type: USS (Unified Screw Threads)

Hardness: Grade 8

Nominal Size: 3/8 inch

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.