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, AS ... 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 ...