We can also provide you the different kinds of fasteners. We can provide different kind of material and size according to your request. The stud bolts and the hex head bolts are the most common type. And the standard usually is ASME B18.31.1/18.2.2, and the material usually be A193 B7/A194 2H or stainless steel. Also we can manufacture the special Bolt as per your requirement/ drawings.