1.Name:Non-standard flat washer with small holes 2.Size: M6-M20 3.Grade: SAE, ... USS,F436 4.Material:Carbon steel Specification of our washer: 1.NameNon-standard flat washer with small holes 2.StandardDIN, IFI, ISO, JIS ... else of washers we can offer? 1.NameFlat washer,Spring lock washer, Square washer,Dished washer,Bevel washer,etc2.StandardDIN, IFI, ISO, JIS, AS,BS ...