| Size | M3-M48 or non-standard as request&design |
| Finish | Plain, black oxide , Zinc Electroplating,Hot Dip Galvanizing,Copper plating, Nickel plating,Zinc impregnation,ETC. |
| Material | Carbon steel、Stainless steel |
| Grade | 4，8，10，12 |
| Standard | GB, DIN, ISO, ANSI/ASTM, BS, JIS,ETC. |
| Non-standards | OEM is available, according to drawing or samples. |
| Samples | Samples are free. |
| Package | Wooden boxes, pallet, cartons, plastic bags, nylon bags. |
High strength round headed bolts, one-piece forged from middle carbon steel C1035 and C1045 steel and alloy steel (4140, 40Cr, 42CrMo4), quenched and tempered.
Mechanical properties meet DIN Class 8.8, Class 10.9 and Class 12.9, SAE J429 Grade 5 and 8.
Available sizes M10 to M24 (metric specifications), or inch size 1/2 to 1 inch. Bolt length from 25 to 300mm or could be customized.
Round head bolts available in black oxide, galvanizing, dacromate, wax and power coating.
Round Head Bolt
Class 10.9 Bolt
Class 12.9 Bolt Black
Round Headed Bolt
Round Shouder Bolt
Slotted Round Head Bolt
Slott Round Head Screw
Knurled Head Bolt
