They build the metal fan boxes a little different than the standard boxes,
some actually enlarge the threaded holes and run a long screw right through
the hole and tap the threads in the back of the box





"Roger Shoaf" wrote in message
...

"RBM" rbm2(remove wrote in message
...

Don't do that, you'd weaken the screw tabs.

When I measure a #8 screw I find it to be .160 inches, and when I measure
the #10 I find it to be .185 inches.

That means that I would be enlarging the hole .025 inches.

If you are not familiar with decimal divisions on an inch, 1/8" =.125"

.025" is 1/5 of 1/8"

If the box is that cheesy that the tabs could not safely withstand
enlarging
them that little tiny bit, then I would certainly not use them.

I would be willing to bet that I could support my weight (almost 300# on
the
box I installed. I would not bet on the cheap boxes that were being sold
with the tin bridge to hold up as well.

--
Roger Shoaf
If you are not part of the solution, you are not dissolved in the solvent.