Originally Posted by Sonic04Edge
Ford says they are a M8 1.25x20. Do I need to put a nut on them or will it hold in the threads on the frame?
This is correct but it is a thread cutting flange bolt. I used English equivalents and they worked great, you need 6 of them in total.
McMaster #90096A583 will work perfect and they are under $10 shipped for more then you will ever need.
if you still have the plastic cover where the skid goes, they are the same bolts, and you can use them to thread the holes then use 2 other standard bolts in the holes that are left.