Originally Posted by Creative Engineering
Acorn, or cap, nuts have been around for a long time. I certainly hope they aren't junk! Motorcycles, autos, aircraft, all use acorn nuts. Acorn nuts aren't different...they simply have a closed crown that covers the exposed end of the threads.
They are used to:
1) To protect the threads from damage/corrosion/dirt.
2) To protect skin from the sharp exposed threads.
3) To create a clean, finished, appearance.
The problem comes from the length of the threaded portion that the nut engages. Obviously if the stud length is not correct, the Acorn nut will bottom out before it clamps the mating parts.
I'll agree that, (for most MB'ers), it's easier to replace the acorn nuts with standard hex nuts as opposed to correcting the length of the stud.
Nothing but just good ole common horse sense here....Amen Bro., the acorn nut is not the issue it's the length of the stud that is the problem, and something as simple as a dremel tool or a bench grinder will do wonders for this problem, and then you can still have them purdy little chrome nuts on the top of that purdy little china smoker.......LOL