| 摘要 |
A fastener (20) for installation into a workpiece (28) which may be installed by either a swaging operation or a torquing operation. The fastener includes an enlarged protruding head (20) which is proximal to a substantially cylindrical smooth shank portion (30). A threaded shank portion (38) positioned distal to the smooth shank portion includes a male thread which is sufficiently strong to have a swage collar (46) swaged onto it. Distal to the threaded shank portion is a pin tail portion (48) having a surface which is configured to engage a tool. Positioned between the threaded shank portion and the pin tail portion is a breakneck groove (50) having a lower tensilestrength than any other portion of the fastener. The tensile strength of the breakneck groove is controlled such that the fastener severs within the breakneck groove when a preset range of tension is applied to the pin tail portion by the tool. |
