| 摘要 |
The fastening device (10) has fastening nut (40) with continuous recess (42) and head portion with two regions (52). The distance between outer edge contours of region is greater than cross sectional dimension of through hole (12). A shaft portion has external thread (46) that is screwed in internal thread (30) of the base unit (24). A form-fitting profile (44) located at inner wall of recess is connected with mating form-fitting profile of rotating tool through the recess (26) of the base unit. |
