Auto Black Automobile Hub Bolt Usage: Automobilve

An automobile hub bolt comprises a screw, a bolt head and a secondary fixing piece, a wear-resistant ceramic layer is wrapped outside the screw, thickness of the wear-resistant ceramic layer is one third to one half of radius of the screw, external threads are arranged on ceramic surfaces, of the wear-resistant ceramic layer, at two ends of the screw, the bolt head is fixedly connected with one side flank of thread, the secondary fixing piece is arranged on the bolt head, and a ceramic buffer sleeve is arranged between the bolt head and the secondary fixing piece. The automobile hub bolt is simple in process, convenient to process, easy to assemble and capable of effectively resisting compression and preventing cutting.