Nominal Size: #10
Inside Diameter: 7/32"
Outside Diameter: 1/2"
Thickness: 3/64"
Material: Copper
Thread Type: SAE
Type: Flat Washer
Box of 96.
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.