Aha ngwaahịa SAE J429 2/5/8 UNC Hex Bolt/ Hex Cap Screw
Ọkọlọtọ: 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;
ASTM: 307A, A325, A490,
Na-emecha Plain, Zinc (Yellow,White,Blue,Black),Hop Dip Galvanized(HDG),Black Oxide,
Geomet, Dacroment, Nickel plated, Zinc-Nickel plated