| 摘要 |
<p>A screw threaded fastening includes a first member (10) with an external screw thread (24) and a second member (22) with a corresponding internal screw thread (23), a radial bore (40) being provided in the first member (10) and a corresponding axial extending radial aperture or recess (32), being provided in the second member (22), so that when the screw threads (24, 23) of the first and second members (10, 22) engage and the second member (22) is tightened onto the first member (10), the radial bore (40) may be aligned angularly with the aperture or recess (32). A pin assembly (50) is provided, the pin assembly (50) comprising a pin (51) mounted on a spring element (53), the pin (51) being located in the radial bore (40) and being urged by the spring element (53) towards said aperture or recess (32), so that when the radial bore (40) is aligned angularly with the aperture or recess (32), the pin (51) will spring into the aperture or recess (32) preventing further relative rotation between the first and second members (10, 22). <IMAGE></p> |
