A 307 Grade A Zinc Cr+3 Bolt

Wisine Brand Primarily used for aesthetics in new buildings or in the railroad industry, square head bolts are externally threaded fasteners, generally made from low or medium carbon steel. They have square-shaped external wrenching heads, which offer a large bearing area for positive gripping. Our selection of Grade A square head bolts come in A307 Plain, Zinc and HDG as well as a variety of sizes to suit the job at hand.
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