| 摘要 |
A fastening system including a stud with a shank and an annular flange whose diameter is greater than the diameter of the shank. The system further including a nut with a bore and an internal thread formed in the bore, the internal thread having a helical thread ridge formed in the bore and a thread groove running next to the thread ridge. The annular flange of the stud can be screwed into the internal thread.
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