Type of locking nut


The first is to use two identical nuts on the same bolt, and attach a tightening torque between the two nuts to make the bolt connection reliable.
The second is a special lock nut that needs to be used with a lock gasket. The special locking nut is not a hexagonal nut, but a round nut, and there are 3, 4, 6 or 8 gaps on the circumference of the nut (depending on the size of the nut and the manufacturer's product series), which are both the focus of the tightening tool and the clamping place of the locking gasket bayonet.
The third is to drill threaded holes through the outer surface of the nut to the inner thread surface (generally 2, the outer surface is 90 distribution), used to screw in a small diameter countersunk screw, the purpose is to exert a centripetal force on the thread to prevent the lock nut from loosening. The lock nut of good quality sold on the market is inlaid with a small copper piece consistent with the lock nut thread on the inner round surface of the nut, which is used to avoid the radial jacking screw directly contacting the lock thread and damaging the latter. This lock nut is gradually applied to the shaft end locking of rotating motion parts, such as the anti-loosening of ball screw mounting end bearings.
The fourth kind of lock nut is composed of two parts, each part has staggered CAM, because the internal wedge design slope Angle is greater than the nut Angle of the bolt, this combination will be tightly fastened into a whole, when there is vibration, the lock nut convex part of each other, resulting in lifting tension, so as to achieve the perfect lock effect.
The fifth is the structural anti-loosening, through the design improvement on the thread structure, without the help of other external factors to obtain a own locking function, so its applicability than the above several methods are wide, the environmental requirements are relatively low. Lock nuts include many types, such as nylon nuts, there is a flange nut is also, in short, this lock nut is a lock effect. Twist the nut onto the screw, screw, bolt, etc., so that it will not come loose. So that they can be actively connected together, so that it is strong, stable performance to a high degree.

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