| 摘要 |
A screw and nut assembly comprises a nut 20 and a screw 11 having a screw shank 12 which has a head 13 at one end thereof and a pin 14 at the other end thereof for engagement with a holding sleeve e.g. 35 (Figure 3, not shown). With the nut 20 applied loosely, the pin 14 protrudes outwardly of the nut 20 and is accessible for the holding sleeve as the nut 20 is being tightened by means of a driving sleeve (33, Figure 3 not shown). The nut may be self- locking (e.g. by having a non-circular hole) and may have a circumferential flange 25 the inner diameter of which is such that there is formed a space 26 for the thread exit 12B. <IMAGE> |
