1.Name:Stainless steel DIN7980 High collar lock washer 2.Size: M3-M36 3.Grade: SAE,USS,F436 ... Specification of our washer: 1.NameStainless steel DIN7980 High collar lock washer 2.StandardDIN, IFI, ISO, JIS, AS,BS, EN, SAE ... or wooden case10.CertificateISO9001:2008What else of washers we can offer? 1.NameFlat washer,Spring lock washer, Square washer,Dished washer,Bevel ...