On Wed, 14 Jan 2015 12:48:04 -0800, whit3rd wrote:

On Tuesday, January 13, 2015 at 5:06:06 PM UTC-8, Rex wrote:
I'm trying to fix up a 1940s-vintage small-frame Llama.
It needs at least one grips screw...
The screw I need measures at M3 x .7mm, 5mm long I think I can also use
5-36 US.

Odd; 1940s would usually be post-standardization, and the M3 x 0.7
thread is an oddball. Could it be M3.5 x 0.6? Or M4 x 0.7?
There's also 5-40, but I've only ever seen that in lefthand...

It sounds like you might have to warm up a lathe and turn them out
yourself. Panhead and slotted is the easy part.

Make a few dozen extras, and you can offer 'em on eBay to others that
might want to do restorations.

5-40 is the thread size of the prop screw on Cox 049 engines. I have a
bag of them for that reason.

It's also popular with railroad modelers, because it's nominal diameter is
1/8", and so perfect if you're doing a 1/8 scale model of a locomotive
with 1" bolts.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com