[TRADED/FOUND] Tiny brass machine screws

[Kunama]

I am trying to complete the renovation of my Berry & Mackay brass refractor and am looking for any very small slot headed brass machine screws.

Ideal size would be about 2mm diameter x 6mm long.
These are often found in old clockwork mechanisms etc.

Can be countersunk with round head or cheese/pan head.

Thanks in advance.....

[Terry B]

These guys maybe?
http://www.smallparts.com.au/catalogue/

[MrB (Simon)]

Are these for pre-tapped holes or will they have nuts?
Model engineers often use BA series fasteners, these are a strange british version of metric and are not compatible with ISO metric, but if you're using nuts then no problem.

There are a few model engineering sources in Australia, one I've gone to a few times is Hobby Mechanics: http://www.hobbymechanics.com.au/categories/Fasteners/

BA8 by 1/4" would be about right, it is 2.2mm diameter.
BA9 is 1.9mm but HM doesn't have nuts to suit.
They do have BA taps and brass hex stock tho if you're adventurous enough to make your own nuts, very easy on a lathe.

Brass BA round head screws: http://www.hobbymechanics.com.au/bra...ws-round-head/
Brass BA nuts: http://www.hobbymechanics.com.au/brass-nuts-hexagon/
Both are about $6 or $7 for a pack of 25.
Other head types available.

BA screw info and chart of sizes: http://en.m.wikipedia.org/wiki/Briti..._screw_threads
"BA threads are still used in some precision instruments, such as optics....."

[Kunama]

Thanks for the tips Terry and Simon. The holes are tapped so I just need the screws. I just measured one at ø: 2mm x L:5mm, countersunk with slightly domed head 0.5mm pitch.
Alex has found some small ones in his stash and is sending them to me, what a gentleman!!!

[rogerco (Roger)]

In Western Sydney I have found that a mob called "Boltmaster" at Penrith have most things.

[niko]

keables in Melbourne have everything

[Kunama]

Thanks all, Alex has come to the rescue with some freebies.