| 摘要 |
A locking device for locking a nut onto its bolt to resist unwanted removal of the nut, comprising a locking base and a securable cover for the locking base. The locking base is secured by the nut and the cover encloses the nut and is joined to the locking base by a tongue and groove joint. A locking bolt operated by a lock cylinder secures the cover to the base. V-shaped projections angled toward the nut on the inside of the cover cut and jam the nut onto the bolt under extraordinary force such as a hammer blow.
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