On Jun 12, 9:56*pm, Lewis Hartswick wrote:
Vernon Tuck wrote:
Here is a link to a European supplier: *http://www.farnell.com/datasheets/42155.pdf

This plug is made of brass. *If it fits my tank would brass be
suitable material for drilling and tapping so that I can use standard
SAE air hose fittings?

Thanks,

Vernon

They don't look thick enough to tap. Notice the extra "depth'
where the threads are now.
* * ...lew...

I was worried about the same thing. Since posting, I've found this:
http://www.grainger.com/Grainger/items/5MUE5

It is a drain plug used on various cars during the 70s and 80s.
Grainger has a pack of 5 for $15. I may try to order a single one
from a local auto parts place to make sure it is the right diameter
and pitch. If so, the idea would be to chuck 'em into a lathe, drill
out the center, then countersink and tap a hole into which to thread a
standard air hose quick disconnect fitting.

V