Thread diameter：M1.4, M1.6, (M1.8), M2, M2.5, M3, M4, M5, M6, M8, M10, M12, (M14), M16, (M18), M20, (M22), M24
Length(mm)：2, 3, 4, 5, 6, 8, 10, 12, 16, 20, 25, 30, 35, 40, 45, 50, 55, 60
Metarial: Carbon steel/Stainless steel/Alloy steel
Surface: Zinc/Galvanized/Plain/Nickle/Oxide
