I replaced the starter motor in my old Jeep today. Of the two bolts that hold it to the housing, one has a 9/16ths hex head, and the other a 19/32nds. It took a few socket changes (every time in and out under the vehicle) to remember that the last time I changed the starter a 19/32nds was wanted for one side. I don't understand why the bolt head size would vary so slightly in this instance. And why a 32nds dimension socket (or other wrench) should get into the replacer's vocabulary at this juncture. The other peculiarity of the starter is that one side of its own housing is threaded, and one side of the vehicle bell housing is threaded. And the bolts go in in 180 deg to each other. Clearance dictates this, I'm sure; but why the differing bolt head sizes?
32nds socket sizes don't filter down to my level otherwise (maybe, 17/32nds). Another of those just wondering posts. Frank MorrisonObmetal: (And, no, I wasn't bright enough to disconnect the battery before getting under the vehicle and addressing the starter with metal wrenches)