1.Stainless spring washer 2.M2,M3,M4,M5,M6-M30,1/8",3/16...1 1/8" 3. ... A2,A4), 4.standard:GB,DIN,ASME,ANSI Stainless spring washer- 304,316 ,and we also provide as below: Features (material ... : 304, 304L, 316, 316L, etc.):1) M5~M20 DIN931 Hex Bolts and DIN933 Hex Head Screws, DIN934 ... or profile needed, please contact us. Thanks! DIN127B Stainless Spring Washer