I have fractional, some letter, and number drill bits.
The 7/64 will work just fine. .003 difference, AN bolts vary almost that much.
Recent post here MANY recommendations to use #27 drill for #6 screws. WRONG-proper size is #28.
I was a machinist in a previous life.
The 6-32 tap I got says to use a #36 drill for the pilot hole. The closest fractional size is 7/64... will this be ok, or will it be too big? this is for the small screws to hold the dynon heated pitot tube in the mast.