Stainless Steel Fasteners, material grade: 304, 304l, 316, 316l, 316Ti, 317, 317l, 321, 347, 347h, 310s, 904l\/1.4539, s31254, AL6XN ect. Asme B18.2 Hex Bolts ASME B18.2.2 Mphepo ya Asme B18.2, Hext, Hex Bolt, Sherher, Zherher, Zherzhou Hiperine Mapaipi Co., Ltd.