| 摘要 |
A blind fastener ( 11 ) for installation in a thermoplastic workpiece, which blind fastener has a leading end face ( 21 ) which is substantially flat and non-abrasive and without drilling teeth, so that when the leading end face of the fastener is held in contact with the near face of the thermoplastic workpiece ( 22 ) and heat and pressure are applied to the contacted area of the workpiece by means of the leading end of the fastener, the fastener progressively forms a hole through the thermoplastic workpiece in which hole it can then be installed.
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