On 4/6/2015 11:20 AM, Lloyd E. Sponenburgh wrote:

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.

1/8" is the specified hole diameter for roll tapping a 6-32. Admittedly,
running a screw in, is not exactly proper thread forming, but in some
situations, should work OK, if loads are low and servicing not likely.
Just as much a factor I'd think, is the probability that the screw crest
will deform due to not being hardened, and I believe this more than the
hole size would reduce the strength.

Jon