DIN ya kawaida, ASTM/ANSI JIS EN ISO, AS, GBDaraja la Chuma: 4/6/10/12 SAE: Gr.2, 5, 8;Zinki ya Kumaliza(Njano, Nyeupe, Bluu, Nyeusi), Hop Dip Iliyotiwa Mabati(HDG), Oksidi Nyeusi, Geomet, Dacroment, anodization, Nickel plated, Zinc-Nickel plated
Hex nati
Nyenzo: Chuma cha kaboni, Chuma cha pua