Standard DIN, ASTM/ANSI JIS EN ISO, AS, GB
Ọkwa ígwè: DIN: Gr.4.6, 4.8, 5.6, 5.8, 8.8, 10.9, 12.9;SAE: Gr.2, 5, 8;
Na-emecha Zinc (Yellow, White, Blue) Black oxide, Black Hop Dip Galvanized (HDG), Black Oxide, Geomet, Dacroment, anodization, Nickel plated, Zinc-Nickel plated
Usoro mmepụta M2-M30: oyi oyi, M30-M100 Hot Forging, Machining na CNC maka ahaziri fastener