The nut produced by the Dongguan nut manufacturer is a part that is screwed together with a bolt or screw for fastening. A component that must be used in all manufacturing machinery is divided into carbon steel, stainless steel, and non-ferrous materials according to different materials. Several types of metals (such as copper).

Nuts of Dongguan nut manufacturers are parts that tightly connect mechanical equipment. Through the inner thread, nuts and bolts of the same specification can be connected together. For example, M4-P0.7 nuts can only be connected with M4-P0.7 series. (In the nut, M4 means that the inner diameter of the nut is about 4mm, 0.7 means that the distance between the two threads is 0.7mm); the same is true for American products, for example, 1/4-20 nuts can only be connected with 1/ 4-20 screw collocation (1/4 means that the inner diameter of the nut is about 0.25 inches, 20 means that there are 20 teeth in each inch).

Other names: root mother, anti-loosening nut, nazi.

Purpose: To lock the outer joint of the harness or other pipe fittings.

The working principle of the nut produced by the Dongguan nut manufacturer is to use the friction between the nut and the bolt for self-locking. However, the reliability of this self-locking under dynamic load will be reduced. In some important occasions, we will take some anti-loosening measures to ensure the reliability of the nut locking. The use of a lock nut is one of the anti-loosening measures.

 There are also three kinds of lock nuts from Dongguan nut manufacturers:

The first is to use two identical nuts to screw on the same bolt, and add a tightening torque between the two nuts to make the bolt connection reliable.

The second type is a special lock nut, which needs to be used together with a lock washer. The special lock nut is not a hexagonal nut, but a middle round nut. There are 3, 4, 6 or 8 gaps on the circumference of the nut (depending on the size of the nut and the product series of the manufacturer). Several notches are not only the focus of the tightening tool, but also the entry point of the locking washer.

The third type is to drill through threaded holes from the outer surface of the nut to the inner threaded surface (usually two, distributed at 90 on the outer surface) to screw in small-diameter countersunk screws. It is to apply a centripetal force to the thread to prevent the lock nut from loosening. The lock nuts of better quality sold by Dongguan Nut Factory are inlaid with small copper pieces on the inner surface of the nut that are consistent with the thread of the lock nut to prevent the radial jacking screw from directly contacting the locked thread and causing damage. By. This kind of lock nut has gradually begun to be applied in the occasion of the shaft end locking of rotating parts, such as the anti-loosening of the bearing at the mounting end of the ball screw.

The second anti-loose method is more reliable than the first, but the structure is relatively complicated. Compared with the first two, the third clock has the characteristics of better anti-loosening effect, simpler and more beautiful structure, and smaller axial size.