Anyone have experience with small tapcon concrete screws? 1/4" head, about 2" length. I can't get them in. I tried a socket, all my weight on it, I'm lucky to get 2 turns before it strips. Why they put such a low profile hex head on something that needs this much force is beyond me. Whatever this blue coating is doesn't help I'm sure. Then I move on to a flat head screwdriver, takes all my strength and weight to turn it, 5 minutes later it's 1/2" in and then the slot is chewed open. So then I grab the vice grips, clamp it and start turning, the head snaps off within a few turns, it's not even an inch in. I drill the holes an extra inch deeper and blow it out with compressed air, makes no difference. I'm using the bit that came with the screws.
WTF? Am I missing something? This is run of the mill garage floor concrete, the direction say drill a damn hole and use a screwdriver to sink it in? Should I try oil lubrication? My floor has several holes with snapped off anchors now.