Shanghai Jinrui Norm Parts Supplies Co.,Ltd is a manufacturer with a rich experience of producing bolts,Website:http://www.chinajinrui.net,nuts and screw.This standard specifies DIN603 carriage bolts with metric threads M5 to M20 of product grade C.DIN standard carriage bolt can be made of carbon steel,stainless steel,alloy steel or other materials.Our carriage bolt has been certificated by ISO 9001 and TS16949.Carriage bolts are widely used in the fields of machinery and equipment, construction, automobile, railway and other industries.StandardGradeFinishCertificationDIN6034.8PlainISO 9001;20086.8Zinc plated8.8Yellow zinc plated10.9PTFE12.9BlackTS16949A2-70DacrometA4-70HDGOtherOther