| 摘要 |
An improved multi-part fastener for a stressed structure comprising a bolt, a special nut, and an intermediate bushing like element assembled with the bushing between the nut and the opposite end of the bolt, which is applied by crimping the bushing to effect an elongation thereof into an interlocking relationship with the bolt and the nut and also where the bushing is of a softer material than the nut which gives longer life to the installation tool while at the same time maintaining the predictably uniform and high clamping force of the fastening.
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