Steve B said something like:
wrote

Unless you have a lot of patience you really need a hammer drill. Then
TapCons are the hot lick for fastening anything to concrete. I also
suggest hearing protection with the hammer drill (or the Bam Gun
fasteners). If you have the right tools concrete is just another wall
surface, tougher than most.

You got that entirely right. It is just that you want to be able to put
something up, and then TAKE IT DOWN if you want to do it without leaving a
cone shaped hole, or some Mondo fastener showing on the wall. Take out a
TapCon, daub a bit of spackle, and it's almost invisible.

It's worth mentioning that these masonry screws you are referring to
actually tap out (as in carve) the threads needed as they are turned. As
mentioned though, you must first drill a hole.

*In my experience* you should *not* use the ones which look like merely blue
Philips head screws. Use the ones which have a hex cap on them and use a
socket wrench: the Philips heads are just too hard to keep a Philips bit or
driver in---the concrete provides too much resistance. Again, IME.

*ALSO*, be aware that if you hit a rock in your concrete your mileage will
vary a *lot*. The initial drilling might be nightmarish, but will almost
always work, and the screwing will have more resistance.

--
Onedoctortoanother:"Ifthisismyrectalthermometer,wh erethehell'smypen???"