Finished square head bolt

Square head bolts are divided into 4.8 grade bolts, 8.8 grade bolts, 10.9 grade bolts, and 12.9 grade bolts according to the high-strength grade. According to the screw wire material, there are iron bolts and stainless steel bolts, stainless steel bolts include stainless steel SUS304 bolts, stainless steel SUS201 bolts, stainless steel SUS316 bolts. It is widely used in electronic and electrical industry,water conservancy engineering industry, electrical products, mechanical equipment, chemical equipment, ships, vehicles, steel structures and so on. Standard ASME B 18.2.1, IFI149,DIN931, DIN933, DIN558, DIN960, DIN961, DIN558, ISO4014 and etc. Material Carbon Steel, Alloy Steel, Stainless Steel, Brass and etc. Grade 4.8, 5.8, 6.8, 8.8, 10.9, 12.9 and etc. Finish Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G and etc. Application Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechani…