| 摘要 |
<p>A threaded fixing element, such as a screw, bolt, nut or the like, with supervised unlocking, of the type comprising a work surface (4) provided with teeth in relief (5), characterised in that the said teeth (5) are regularly distributed over the bearing surface (4) and each possess a projecting rectilinear ridge (6) which is disposed tangentially relative to the diameter generated by the thread (1). <IMAGE></p> |
