... thread (Hexagonal, socket head, pan head, countersunk head) 2)Treatment: cold forging/hot forging 1)Materials option: Stainless Steel C276, 904L, 304, 304L ... , 2507, 2205, 254SMO, AL6XN, 1. 4501, 1. 4529.Super duplex stainless steel F55, F51, F53 HastelloyB & C, Inconel, Incoloy etc. 2). Standards ...