... :DIN,BS,ASTM,ISO. 3)Material:Carbon Steel SpecificationsNuts and Bolts 1)Size:M6-M30,in all length 2)Standard:DIN ... ,BS,ASTM,ISO. 3)Material:carbon steel,c1010,c1008.Nuts and Bolts SizeStandardMaterialGradeSurfacePackingM6DIN933C10083.6Yellow Zinc25kg boxM8-M20DIN931C10104.6Blue Zinc4 box cartonM22DIN960C10204.8White ...