U bolt

American  

noun

1. a bar of iron bent into the shape of a U , fitted with a screw thread and nut at each end.

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U bolt British  

noun

1. a metal bar bent into the shape of a U and threaded at both ends to receive securing nuts: used to secure leaf springs, ring bolts, shackles, etc

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Etymology

Origin of U bolt

First recorded in 1880–85

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