5/16 x 3/8 x 7/8 Zinc Plated Grade 8 Steel USS Flat Washers FLWSRS-054
Diameter: 3/8Diameter 2: 7/8Thickness: 5/64Material: SteelFinish: Yellow ZincThread Type: USSHardness: Grade 8Nominal Size: 5/16Type: Flat WasherA 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.