1. Bolt, Auto Industry 2. Made of Carbon Steel 3. Available in Various Grades and Lengths Wheel StudStandard: DIN, ANSI/ASME, BS, GB, JIS, non-standard. Material: carbon steel, stainless steel Grade: from grade4.8 to 12.9 Dimension: 2mm-48mm, 1/8"-2". Length: from 10mm to 300mm, 3/8"-10", we also can produce according to your requirement Coating: plain, black, zinc, HDG, nickel, phosphate black. ...