Diameter: 3/16"
Diameter 2: 7/16"
Thickness: 3/64"
Material: Steel
Finish: Black Oxide
Thread Type: SAE
Hardness: Grade 2
Nominal Size: #8
Type: Flat Washer
Box of 25.
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.