| 摘要 |
A nut and bolt assembly includes a bolt having at least one external threaded portion and at least one adjacent unthreaded portion along its length and a nut having an internal threaded portion threadedly engageable with the threaded portion of the bolt, the unthreaded portion of the bolt having a diameter such that the nut can slide therealong in an axial direction without rotation and the axial length of the unthreaded portion being at least as great as the threaded portion of the nut, the arrangement being such that in a clamping position of the assembly the threaded portion of the nut wholly resides on the unthreaded bolt portion with one end of the nut threads abutting one end of the threads of the threaded bolt portion.
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