You can get imperial (AF and Whitworth) sockets at any decent engineers merchants.
Remember that you are dealing with a nut that has been tightened to one hell of a torque so a properly fitting socket is essential.
Using a metric socket on an imperial nut smacks of bodging to me!
Arwyn
1 3/16" is equivalent to 30.1mm that's 0.004" difference. do own sockets that are that precise ? No it's not a bodge, you could quite safely use a 32mm socket on a 1 1/4" nut (31.75mm)
