Karaniwang DIN, ASTM/ANSI JIS EN ISO, AS, GBGrado ng Bakal: 4/6/10/12 SAE: Gr.2, 5, 8;Pagtatapos na Zinc (Dilaw, Puti, Asul, Itim), Hop Dip Galvanized (HDG), Black Oxide, Geomet, Dacroment, anodization, Nickel plated, Zinc-Nickel plated
Heksagonal na nut
Materyal: carbon steel, Hindi kinakalawang na asero