| 单词 | lock nut |
| 释义 | lock nut Mach. 1. a nut specially constructed to prevent its coming loose, usually having a means of providing extra friction between itself and the screw. 2. Also called jam nut. a thin supplementary nut screwed down upon a regular nut to prevent its loosening. See illus. under nut. Also, locknut. [1860-65] |
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