Drill sizes are irrevelant thats why I didn't put any, its the bit that fits the jig correctly that counts.
I make my jigs so holes sizes are not .010-.015 over size like others I have seen.
A 5 MM bolts is .1965 in diameter and NO 7 drill is .1995 which is what my jigs use.
a no 6 is .205 and a 5 is .210 Thats .010-.015 clearance around the bolts, which in my book is a mile, but again your stuck with what the drill jig has in it for a hole.
A 5 or 6 works the best at make sloppy holes for the bolts to go thru and slop around the bolts is the last thing I want on my prop bolts.