A locknut, as the name suggests, is a threaded connection used to prevent the thread from loosening. It is mainly suitable for those machines and equipment that need to be disassembled frequently, such as automobiles, airplanes, computers, etc. The working principle of the locknut is to use its angle stripes and insulating washers to achieve the purpose of fixing the disassembled parts. The nut itself is specially beveled to apply pressure in the tightening direction when turned. When a locknut is tightened, its angled stripes are tucked into the threads, locking the screw or bolt head securely. The insulating washer is located at the bottom of the nut, which can form a layer of isolation material between the nut and the tightening surface, preventing loosening and loosening caused by shock and vibration. Typically, locknuts need to be covered with an anti-rust coating to prevent corrosion and oxidation.
How Locknuts Work
In a word, through its special angle stripes and insulating washers, the locknut prevents the occurrence of thread loosening by using the rotating force and isolating materials, thus ensuring the stability and reliability of the machine and equipment.
Three advantages of locknuts:
First, excellent anti-vibration performance: when the thread is tightened, the crest thread of the bolt enters the 30° wedge-shaped slope of the nut tightly and is clamped, and the normal force generated on the wedge-shaped slope is the same as that of the bolt The axis forms an included angle of 60° instead of 30°. Therefore, the normal force generated when the locknut is tightened is much larger than that of ordinary standard nuts, which has great anti-loosening and anti-vibration capabilities.
Second, strong wear resistance and shear resistance: the 30° slope at the bottom of the nut thread can make the nut locking force evenly distributed on all the threads of each tooth, because the pressing force on each thread surface is evenly distributed, so Nuts can better solve the problems of thread wear and shear deformation.
Third, the repeated use performance is good: extensive use shows that the locking force of the locknut is not reduced after repeated tightening and disassembly many times, and the original locking effect can be maintained.
