On Dec 17, 8:21*am, pierre wrote:
On Dec 16, 8:24*am, notbob -did-not-set--mail-host-

address--so-tickle-me wrote:
A couple decades ago, I ran across a handfull of self-tapping screws.
They were like sheet metal screws, but with skirted hex heads. *These
were about 1/2" long and 1/4" dia. *I'd seen them used with a special
head on a drill motor, it having a hex chuck that would ratchet when the
screw bottomed out. *What amazed me about these was the fact they where
not only self-starting AND self-tapping, but they where pretty damn
hard. *In experimenting, I discovered they tapped and screwed into an
old BSA motorcycle frame like it was soft pine.

I now find myself in need of something like this and was wondering just
what, exactly, do I ask for when I go down to the hardware store.

nb

I am surprised that no one has mentioned McFeely's yet. You need to
checkhttp://www.mcfeelys.com/self-tapping-screws
for a great selection of excellent screws.

No affiliation, just a very satisfied customer.

Pierre

Interesting that McFeely's say they're the square drive specialists
but examples are hard to find on their site. As far as I'm concerned,
square drive (Robertson) are better than any other.