| 摘要 |
An improved fastening device and a method of fastening a plurality of members together. The fastening device includes a headed pin which has a threaded shank portion, the latter having a polygonal recess formed at the outer end thereof. The pin is seated with its head against one surface of the members to be fastened together and at least a part of the threaded shank portion extends beyond the opposite surface of the members to be fastened together. A nut is then threaded onto the threaded shank portion with sufficient torque to develop a preloading stress in the pin. Finally, a heating element is inserted into the polygonal recess to thereby cause plastic deformation of the threaded shank portion to lock the shank portion to the nut and also to provide an increased tension in the pin.
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