Hexagon Socket Head Bolt is the most widely used type of bolt. Grade A and Grade B high-strength hexagon bolts are used for important assembly precision requirements, and places subject to greater impact, vibration or load. Class C high-strength hexagon bolts are used in places where the appearance is rough and the assembly accuracy is not high.
    The threads of  China Fasteners Suppliers high-strength hexagonal bolts are generally coarse-threaded ordinary threads, and fine-threaded ordinary threaded bolts have better self-locking properties. They are mainly used for thin-walled parts or places subject to impact, vibration or alternating loads. Generally, partial threads are made on bolts, and full-thread bolts are mainly used in places requiring longer threads. Bolts with holes are used where bolts are required to be locked.