"Michael A. Terrell" wrote in message
...
Bill Turner wrote:


I would think one advantage of square drive would be it is nearly
impossible to strip the drive hole, unlike Phillips and especially hex
(Allen). I think I'll scout around for some for my next building
project in 6-32, 8-32 and 10-32.

Who knows, might even try metric sizes.

Bill, W6WRT



I have never seen them with machine screw threads, only as wood
screws.

Ah, you poor deprived person! Got 'em aplenty up
here in the Great White North!