Craig McCluskey wrote: > > 1.804" across the flats. This is 45.82mm and implies one would use a > 46mm (1.811") or 1 13/16" (1.813") socket.
I actually looked it up in a Whitworth table. 1" W is 1.670, 1 1/8" is 1.860, so it looks like the choices you gave are better. The acceptable measure across the flats for a 1 1/8" Whitworth bolt is 1.815 to 1.860, so there's considerable leeway on large fasteners, I doubt .01" loose is a problem.
