carriage bolt with nut 1.Size :5*50 ,5*70,5*90,6*60, ... ,12*70,12*120,12*140... 2. Material : steel carriage bolt with nut1.Size :5*50 ,5*70,5*90,6*60 ... ,and etc...4.Character : By the head and the screw (with the external thread of the cylinder) a class of two ... hole connecting the two parts5. Our Guideline is: Improve together with our clients by holding the principle of “Mutual benefit and ...