... Detail :FOB NINGBOSpecifications(1). Product: Washer(2). Standard: DIN125(3). Grade:DIN125A(4). Size: M20(5). Material: 40Cr(6). Coating: Hot ... PackingCertificationRegarding to Bolts StandardDIN931,DIN933,DIN6914,ASTM A325M,ASTMA325, ASTM A-10,ASTM490M and other you would like to Grade4.8 ... have 10years experience of manufacturing fasteners DIN125 M20 Flat Washer Grade A