1/2 x 9/16 x 1-3/8 Chrome Plated Grade 2 Steel USS Flat Washers (10 pcs.)
Diameter: 9/16Diameter 2: 1-3/8Thickness: 7/64Material: SteelFinish: ChromeThread Type: USSHardness: Grade 2Nominal Size: 1/2Type: Flat WasherBox 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.