Hi Brian,
For those that are listening in, a screw has to have a certain amount of thread to hold. I think the figure is about 2 times the diameter of the screw. So, a 1/4 inch bolt should have about a half-inch of threads. So I have not yet screwed anything into a mast. If you do have to, a bunch of small screws are better than a few larger ones. The Riv-nut option is a good one also, but whatever you do don't get the Chinese ones They strip out while you're putting them in.
Thanks again, Tom
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