DIN931 stainless steel nut 1.material:200,300,400 ect 2,standard:DIN934, ... ,DIN931 4-304,316,316L,904L,C276,2205,250 DIN933 stainless steel nuts 1)Size and type: Bolt: M3-M64 hexagonal head ... , 904L, 304, 304L,310S, 316, 316L, 321, 317L,Super duplex stainless steel F55, F51,F53 HastelloyB&C, Inconel, Incoloy etc. 3.Standards: GB ,ANSI ...