1/4 x 5/16 x 3/4 Zinc Plated Grade 8 Steel USS Flat Washers FLWSRS-045

Diameter: 5/16 Diameter 2: 3/4 Thickness: 1/16 Material: Steel Finish: Yellow Zinc Thread Type: USS Hardness: Grade 8 Nominal Size: 1/4 Type: Flat Washer 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.