Home / Products / Bolts ASTM A394 STEEL TRANSMISSION TOWER BOLTS, ZINC-COATED AND BARE. A394 ASTM A394 3 ASTM A394 4 ASTM A394 2 Notes :Unit: InchT: Thread LengthsDimensions per :ASME B18.2.1Finish :Hot Dip Zinc Coated ASTM A153 Class CRelated Product Links :ASTM A307BASTM A563 Gr.A