| 摘要 |
PROBLEM TO BE SOLVED: To provide a washer with protrusions and recesses for eliminating looseness of nuts. SOLUTION: The looseness prevention washer for preventing looseness of the nuts has the protrusions and recesses on a top and a bottom of the washer in which the nuts are fit. Looseness of the nuts can be prevented by providing the characteristic protrusions and recesses on the top and the bottom of the washer. COPYRIGHT: (C)2005,JPO&NCIPI
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