... Non-standard wahser.Features:1) Standard: DIN, GB, JIS, ANSI, Non-standard 2) Materials option: Stainless steel C276 904L,304,304L ... 310S, 321, 317L.2507,2205, 254SMO,AL6XN, 1.4501 , 1.4529,Super duplex stainless steel F55 ,F51 ,F53 HastelloyB&C Inconel, Incoloy ... : plain, zinc, black ,DACROMET.Packing:Boxes or BulkCartons in PalletAccording to customers' requirements stainless steel bolts 304 and 304L