Theres a screw hold that's 8-32 then there are 2 unthreaded holes, they put small spring pins in to hold the claw on and in line, per claw. Are you trying to put a screw into the pin holes?
No Sir. I even took it to the hardware store to make sure. The 4 threaded holes below the 8 spring holes are 6-32 thread and the blade screw hole thread is 8-32.