... , ISO, DIN, BS, ANSI/ASME, JIS 3,Size: M6-M100(1/4-4inch), also according to customers' reqquirements. 4.Material: super ... Washers can we supply? 1Namecarbon steel washer,tapper washer2.standardUSS,SAE,FENDER, F436,DIN ( 125A, 126, 436, 440, 7349, 7989, 9021 ... ; dacromet;nickle plated;cadmium plated,etc.5.SizeM3-M80;1/4”~3-1/4”6.Supply abiltity500 tons per month7.CertificateISO9001:2008 ...