... end threadFlat washers:M3-M33And heavy hex bolts and nuts with all sizes. 2. Chemical Compositions:310S:C≤0.08Mn≤2 ... .0~22.0Cr 24.0~26.0 3.Materials option: Stainless Steel C276, 904L, 304, 304L,310S, 316, 316L, 321, 317L, 2507 ... , 2205, 254SMO, AL6XN, 1.4501,1.4529.Super duplex stainless steel F55, F51,F53 HastelloyB&C, Inconel, Incoloy etc. 4.Standards ...