On 2015-04-06, Lloyd E. Sponenburgh lloydspinsidemindspring.com wrote:
Ignoramus10114 fired this volley in
:

If I drill a
1/8" hole, a 6-32 screw taps it for itself very nicely.

Not really, Ig. If your 1/8" drill made an accurately-sized hole, it would
be a VERY slight threadform.... .1380 in a .1250 hole only leaves about 7-
thou of thread engagement. Unless it's only decorative AND the 1/8" drill
is tuned up and used right, that's a 'barely holds' situation.

The called-out tap drill is #36 (0.1065), meaning about 16-thou of thread
engagement, when done right.

Lloyd

Lloyd, I used those holes to mount TO-220 voltage regulator chips, not
for anything structural. worked great!