[pwnageNick]

Originally Posted by Greg Woelki

Unless I need them because of clearance issues, I prefer to avoid using button heads. The smaller hex size is much easier to strip and doesn't allow for as high tightening and loosening torque. Additionally, button heads are weaker (compare alloy steel button heads and socket head cap screws on McMaster Carr, minimum tensile strength of 120ksi for button heads, 170ksi for socket head cap screws).

Yeah I generally only use button head or counter-sunk if I have to. However on the outisde of your drive I would have used button head since that's the very outside of the drive. It would make dealing with the bumper a bit easier.