I am trying to hang a TV mount into the wall studs above a fireplace. The hex cap screws that came with the mount don't fit snugly into the 7/16" nut driver bit and are too big for the 3/8" bit. There is no way I can use a manual hex head screwdriver to get these things into the wall. I need to use my drill.
Did I buy the correct attachment to use my drill to get these screws into the stud? Or, is it possible the hex cap screws that came with the mount are not "to industry standard measurement." BTW - I took a ruler to the hex cap and sure enough, it measures 3/8".
Where am I going wrong?