**LINK** Bought lots from these, stainless steel, good quality and prices, quick delivery.

If you want to go smaller in metric, http://www.prime-miniatures.co.uk go down to M0.6 (the even do acorn nuts in that size) and a matching 1mm AF spinner. No steel, but they do offer tin or nickel plated as well as plain brass.

Brian

Ron, I have used EKP Supplies a few times for small BA screws etc. Great service and have been very happy with them.

http://www.ekpsupplies.com

Alan.

Ebays your best friend there about 20th the price of some listed above and dont have to leave the room.

Another consideration would Shallow Head Cap Head screws be ok down to M1.6

Suppose it depends on what you are modeling.

2" whit nut is 1.38D

Standard M3 nut is 1.83D

6BA hex on 126" 5 BA thread is 1.54D

5BA hex on 5BA thread is 1.75D

4mm hex on M3 is 1.33D

I know which one is closer

Edited By JasonB on 06/11/2018 13:22:33

Also if you are bothered about how your nuts look some of the cheap e-bay offerings are pressed whereas most of EKP's are fully machined which gives a nicer looking crisp nut with single chamfer.

You sure they are not square

I've not seen reduced BA nuts only hex screws and as you are more than likely to be using studs and nuts on a model than bolts/hex screws that makes the metric option more attractive unless you want to make your own.

Also if using a bolt/hex screw with a nut on teh other side that won't look too good with different sizes either end.

The M3 – 4mm hex is the odd one where available sizes of stock don't ideally suit the look, about 4.5mm would be better for say a 1" thread at 1/8th scale.

Thanks Neil, I'd missed them