Name
flange bolt hex washer head screws
Diameter
M4-M36; 1/4''-1.5''
Grade
4.8, 5.8, 6.8, 8.8, 10.9, 12.9; A2 a4
Material
Carbon steel,alloy steel ,Stainless steel 304, Stainless steel , A2 A4
Standard
ISO7379; ASME B 18.3.3,BS 4168-7,JIS B 1175 or customized
Surface
Black,Zinc plated( blue/white/yellow), hot dip galvanized
Head type
hexagon socket head ,pan head, torx head, hex head, slotted head