OT : M3*0.6mm pitch screws

Yes, I have seen some cheap tap and die sets in tool cataloges that include both M3*05. (the normal one) and M3*0.6. I have also found companies that sell the die (and taps) on their own, so presumably it's used for something. FWIW, M3.5 (used for HPIB jackscerews, and slso to fit wall switches and socket outlets to their moutning boxes over here) is normally a 0.6mm pitch, which makes it more difficult to search for the screws I want... Err, I am in the UK. We have draconian regualtions about firearms [1] which mean that such shops are very uncommon. In any case, spare parts for particualr items are (at least over here) a form of legalised robbery. As I need quite a few of the screws, I'd much rather get them from a company that deals in such things nad who will sell be a packet of 100 or whatever than as a spare part for soemthing at a rather high cost for one. [1] I've never held a gun, I have no desire to hold a gun. But I am also of the opinion that guns do not of themselves do any harm. Misuse of them does, of course. But that is not a reason to have the regulations we have. -tony