Bill, I've used the Phillips as well as the hex head, but, as I said, my
problem is holding the Phillips screw bit directly in line with the screw
because of my visual impairment. Also, I've been doing construction work
for well over 30 years and I certainly know how to select the proper size,
scr
I have used the Tapcon concrete screws quite often and have one big problem
with them. The ones with the Phillips head are a problem because the screw
bit rides up out of the screw when the screw becomes tight in the predrilled
hole. I believe they would work a lot better if they had a drive like
