DIN standard, ASTM/ANSI JIS EN ISO, AS, GBGred Keluli: 4/6/10/12 SAE: Gr.2, 5, 8;Kemasan Zink(Kuning, Putih, Biru, Hitam), Hop Dip Galvanized(HDG), Black Oxide, Geomet, Dacroment, anodization, Nickel plated, Zink-Nikel plated
Hex nut
Bahan: Keluli karbon, Keluli tahan karat