Bolt, Nut, Customized Fastener manufacturer / supplier in China, offering Custom SS304 SS316 Double-Ended Threaded Stud Knurled Shoulder Bolt per Drawing, DIN976 Stainless Steel A320 B8 B8m S355 4140 A193 B7 B7m Duplex Steel 32750 32760 Stud Bolt Nace Mrr0175 F55 2507 Thread Rod, En10204 3.1 Carbon Steel A193 B7 B7m 4140 Stud Bolt A193b8 Ceramic Zinc Nickle Coating Yellow Zinc Chromate1.25 1.75 0.5 0.75 1.125 Nace ASTM A193b7 Stud Bolt and so on.