| 摘要 |
An elongated shank has a first section with circumferential grooves arranged for anchoring engagement with a power tool. The shank also has a second section adjacent the first section with circumferential grooves. A collar is arranged to be placed on the second section and also arranged to be swaged into locking engagement therewith by a power tool. A third section at the end of the shank opposite from the first section has screw threads and this section receives a nut in threaded engagement to form a removable and adjustable abutment in association with work pieces and the collar which has been preloaded against the work piece and swaged by a power tool. The shank may be provided with a wrench engaging portion for holding it against rotation when the nut is turned. As an alternative, the collar may be provided with the wrench engaging portion.
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