2″ x 2-1/8″ x 4-1/2″ Zinc Plated Grade 2 Steel USS Flat Washers (15 pcs)
Diameter: 2-1/8″ Diameter 2: 4-1/2″ Thickness: 3/16″ Material: Steel Finish: Zinc Thread Type: USS Hardness: Grade 2 Nominal Size: 2″ Type: Flat Washer Box of 15. 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.