| 摘要 |
A checker nut for locking a threaded body to a threaded rod, comprises a main body portion having a top bearing surface for engaging a threaded body. The main body portion includes a central opening with an inside surface. A female thread is disposed on the inside surface and extends therefrom, the female thread for cooperating with threads on a threaded rod; and the female thread is disposed on the inside surface a distance from the top bearing surface equal to at least one thread required to be passed by a threaded body on a threaded rod.
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