| 摘要 |
A fastener comprising a head portion and a shank portion extending from the head portion, the shank portion including a thread extending only partially radially about the shank portion, the shank portion further including at least one shaped portion located in a region of the shank portion about which the thread does not extend, the shaped portion extending at least partway between the head portion and an opposed end of the shank portion. DRAWINGS 15 --------------------------------------------------- |
