Nơi xuất xứ
Shanghai, China
Item
Big flat round head American standard full thread carriage bolt
materials of carriage bolt 307a
stainless steel,carbon steel
grade
4.8 8.8 10.9 12.9,grade2,5,8,10
Finish
Plain, black, zinc plated, H.D.G or stainless
Shank Diameter
3/8",5/16",1/2",5/8",3/4",7/8",etc
shape of carriage bolt 307a
Round head/square neck
Application
Suitable for all industry
Technique
Cold heading or heat treatment