Diameter: 9/16"
Diameter 2: 1-3/8"
Thickness: 7/64"
Material: Steel
Finish: Yellow Zinc
Thread Type: USS
Hardness: Grade 8
Nominal Size: 1/2"
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.
Washers for sealing and vibration dampening-1/2" x 9/16" x 1-3/8" Zinc Plated Grade 8 Steel USS Flat Washers
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