| 摘要 |
The fastening element (26) equipped, for example in the form of a screw, with a threaded portion (32) consists of a locking portion (28) and of a head portion (30) which form with one another a joint. For this, a slot (34) is made in the locking portion (28), and on the head portion (30) there is an extension (36) which is inserted in the slot and which is held by means of a pin (42). On the head portion there is a hexagon (46) which serves as a handle for screwing in the fastening element. <IMAGE>
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