Bridgeport leveling screws

I don’t know if I’m wording this correctly but I’m trying to find out what size bolt/thread pitch the 4 holes located at each corner of the base of a M head I’m going to pick up... I need to run a long piece of all thread through each one so I can raise the machine up enough to get a pallet jack underneath it to move it around... also would these be typical with all Bridgeport models...?
Any help would be greatly appreciated..