dillyyo

Does anyone know the thread pitch on these? I know they are 14mm nuts that attach. For some reason three stripped and before I even got 36 ft/lbs of torque on them so I need to try and get them off, then re-thread the studs, then put nylon lock nuts on them so I don't need to use locktite. Had an accident awhile back and the cross member was supposedly replaced and I now wonder if they used some cheap after market aluminum one because I can't believe they stripped that easy and I could only get proper torque on one stud.