Sorry, just had a thought, is it one of the Motor U bolts, a Moteck perhaps? If it is, then exhaust type clamps will not be big enough, I have managed to solve the problem with two long coach bolts, sawing/filing half of the head away to enable them to lock against the bracket. Failing that, some threaded rod of a suitable diameter will do, plus several nuts.
yeah its for a Diseqc 1.2 Motorized H-H motor. Look likes i will have try b&q. Probelaar won't get it. Was free tomrrow wanted to work on the system. Was undoing a nut today to aling to true south and the u bolt snapped.