Standard DIN, ASTM/ANSI JIS EN ISO, AS, GBỌkwa ígwè: 4/6/10/12 SAE: Gr.2, 5, 8;Na-emecha Zinc (Yellow, White, Blue, Black), Hop Dip Galvanized (HDG), Black Oxide, Geomet, Dacroment, anodization, Nickel plated, Zinc-Nickel plated
Hex nut
ihe: carbon ígwè, igwe anaghị agba nchara
