On 4/17/2012 10:50 AM, Joseph Garrett wrote: > Lim asked: > "Usually I locked the 2 nuts together but I have seen the lower nut > tightened to the rod. Which is correct? > Thanks from Lim" > > Lim, > The key phrase is "Lock Nuts". Or, some people call them Jam Nuts. The idea > is to "jam" one nut against the other, thereby they will bind on the > threaded shaft. Most of the time this works as designed. However, if the > two nuts are perfectly mated, then they become one and will still pivot on > the shaft. If this occurs, then add a thin washer between the two nuts. Nonsense. It doesn't matter a whit how perfectly mated the nuts are or not. If they are tightened together, they will grip the threaded shaft without turning. Ron N
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