A U-bolt is a bolt in the shape of the letter U with screw threads on both ends. U-bolts have primarily been used to support pipework, pipes which fluids and gasses pass through. As such, U-bolts were measured using pipe work engineering speak. A U-bolt would be described by the size of pipe it was supporting. For example, a 40 Nominal Bore U-bolt...
A 'bent bolt' having threads at both ends of the rod and the rod bent at the middle to a semicircle or to two right angles, used for clamping.
A U shaped fastener threaded at both ends used primarily in suspension and related areas of vehicles.
a fitting in the form of a U attached to a support
a bar of iron bent into the shape of afitted with a screw thread and nut at each end.