1-3/8 x 1-1/2 x 3-1/4 Zinc Plated Grade 2 Steel USS Flat Washers (Box of 30)
Diameter: 1-1/2Diameter 2: 3-1/4Thickness: 3/16Material: SteelFinish: ZincThread Type: USSHardness: Grade 2Nominal Size: 1-1/8Type: Flat WasherBox of 30.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.