LOCK NUT

摘要

PURPOSE: A lock nut which prevents interval between combining members is provided to be combined in a shaft by expanding the thread interval of a lock nut. CONSTITUTION: A lock nut which prevents interval between combining members comprises a main nut(20) and a locking part(40). The main nut comprises a first main thread(26) and a second main thread. The first main thread and the second main thread are formed on the central axis. The first main thread and the second main thread are mutually detached. The locking part expands an interval between the second main thread and the first main thread. The locking part locates in one side of the main nut.