... 120,12*140... 2. Material : steel carriage bolt with nut1.Size :5*50 ,5*70,5*90, ... pcs/bag ,and etc...4.Character : By the head and the screw (with the external thread of the cylinder) a ... class of two-part fasteners, nuts with the need and for fastening with a hole connecting the two parts5. ... Our Guideline is: Improve together with our clients by holding the principle of “Mutual benefit and ...