... , black oxide, hot dip galv.etc.5. Size:2mm-68mm6. Packing: in bulk,15-25kgs per carton, then on ... The main products of the company include the following 7 types:1. High strength alloy steel double end stud- , ... of Grade 8.8, 10.9 and 12.9.5. Stainless steel internal and external hexagon bolt products: ... 8.8, 10.9 and ANSI Grade 2, 5 and 8. 7. Various nuts, flat gaskets, spring washers, mechanical ...