spring hanger bolt broke?!?

what size is the nut inside the framerail for the front spring hanger? Mine broke lose the wled and I got a hole cut to get the nut out but what size is it? I can't seem to get a wrench to fit it?

Im not sure what your trying to do?But the bolt is a 14mm and a standard nut would be 21mm.The welded nut on the inside is probably an "odd-ball everything".You may have to cut the bolt head off to extract it from the inside!

We had to cut a hole from the floor down to get to the nut from the top. It's a 25mm of all the stupid things.