| 摘要 |
A pin-type fastener (11,12) capable of dual-function comprises a pin (11) which can be used in fastening workpieces (24, 27) together. The pin (11) has a pintail (17) capable of being removed from the remainder (15) of the pin (11) after the pin (11) has been installed as a fastener in a workpiece, and the pintail (17) can then be used as a weldstud and welded to the same workpiece as the pin-type fastener, or to another workpiece. The pin-type fastner can be a two-part fastener, for example a lockbolt including a nut or swageable collar engageable with the pin. The pin (11) may have a- breakneck (16) to facilitate removal of the pintail (17). The pin (11) itself may be a weldstud. In use, the pin-type fastener (11, 12) is installed in a workpiece (27) and the pintail (17) is removed, and then the pintail (17) is used as a weldstud, being welded to a workpiece (36). Electric welding is employed. Advantage:- economy through second use of pintail as a stud. <IMAGE> <IMAGE> |
