16 years ago
I have an housing to machine in AL6061-T6 . After machining it has to
be hard anodized. The drawing calls for "over sized" tapes for all
holes which are to be hard anodized. The sizes are 0-80 NF, 2-56 NC,
10-32 NC and 4-40 NC.
Has any one used oversized taps?.
How much will these taps be over sized?.
What drill size to use for these taps?.
Any source for these taps?
Any help will be appreciated.