Nuts are usually used in conjunction with the bolt. The six most widely used nut. The six hexagon nuts C for rough surface, the steel structure, less demanding on the accuracy of the machinery, equipment. Six nut grade A and B are mainly used in the smooth surface of high precision, machinery, equipment. Six angle thin nut thickness of thin, multiple connected parts of the surface for space restricted applications. They are often used to prevent the main nut loosening the lock nut.

Non-metallic insert six angle of the locking nut alias is nylon locking nuts. The six corners of the lock nut is a kind of non metal material (usually nylon) nut collar embedded. It is designed to enhance escape torque. Nuts, butterfly nuts is a wing of the. It is designed to be assembled and disassembled by hand directly, without the need of any tools.