This utility model discloses a self-locking anti-loosening nut, comprising a nut body, a stabilizing pad fixedly connected to the bottom of the nut body, and a self-
locking mechanism provided on the upper part of the nut body. The self-
locking mechanism includes a positioning plate fixedly connected to the top of the nut body, a chuck inserted inside the positioning plate, and a self-locking seat fixedly provided on the inner ring surface of the chuck. This self-locking anti-loosening nut requires no special
processing, such as drilling or grooving, and can be directly used with standard threaded bolts, offering high compatibility and reducing special requirements for matching parts. It does not reduce the strength of the nut body and will not deform under tightening force. The
modular design ensures that the lifespan of the nut body is not affected by the
wear and tear of the self-
locking mechanism, significantly improving the product's durability and economy. The replacement process is simple, requiring no professional tools or complex procedures, reducing maintenance difficulty and time costs, and is especially suitable for rapid on-site repairs.