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Buy the 1 3/8" Flat Washers (USS), Medium Carbon Through Hardened Steel, Plain, Import (Dims: 1 1/2" I.D. x 3 1/4" O.D.) online from South Coast Fasteners. It is made from Medium Carbon Through Hardened Steel with a plain finish. Built for spreading the clamp load and protecting the work surface, it is part of our Thru Hardened USS Flat Washers line, stocked across industries such as HVAC and Construction.
Pairs well with Hex Bolts and Finished Hex Nuts to complete the assembly. Please contact us if you need assistance in selecting the right product or placing an order.