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 ... , small box, then pallet or wooden case10.CertificateISO9001:2008What else of washers we can offer? 1.NameFlat washer,Spring lock washer, Square washer,Dished washer ...