1.S.S bolts,nuts and washers, 2.used in industries. 3.Material:300 series/Hastelloy Inconel/Duplex 4.Small order 1.Option: Stainless Steel C276, 904L, 304, 304L,310S, 316, 316L, 321, 317L, 2507, 2205, 254SMO, AL6XN, 1.4501,1.4529.2.Super duplex stainless steel F55, F51,F53 HastelloyB&C, Inconel, Incoloy etc