When I use the .072 hook hangers I pre drill the holes using the same diameter bit, but I only drill it about 3/4 of the length of the hangers. Then I super glue the holes and threads of the hangers. Then I screw the hangers in completely that way I have the strength of the super glue then also the strength of the 1/4 of the threads directly into the wood. It seems to work for me. Hope that helps man good luck.