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.Shanghai Jinrui owes total assets of RMB 50 million with area of 5000㎡. The business covers 18 countries from five continents.Now three branches of Shanghai Jinrui are Shanghai Xingrui Bolt Factory, Shanghai Xingrui Wire Steel Factory, and Shanghai Xingrui Hot heading Factory.ISO standard carriage bolts as our main product,sales well in both domestic and international countries.All ISO carriage bolts are with high quality by professional testing equipment like salt spray tester, desktop direct- reading spectrometer, metallographic analyzer and so on.This standard of carriage bolt covers the thread size from M5 to M20.StandardGradeFinishCertificationISO86774.8PlainISO 9001;20086.8Zinc plated8.8Yellow zinc plated10.9PTFE12.9BlackTS16949A2-70DacrometA4-70HDGOtherOther