... flat washer/plain washer 1.Delivery time:7days 2.OEM:manufacturer 3.ISO9001:2008,ROHS 4.Standard:GB,DIN,JIS,ANSI flat washer/plain ... washer Product name Galvanized flat washers SpecificationM2-M40MaterialMild carbon steel, ... 4.8,6.8,8.8,12.9Color Plain, blue plated, white plated, yellow plated.Standard ... ,free for samples. stainless steel flat washer/plain washer