PLUGS, Aerial, Single No. C1 (ZA/CAN 1480)

[Bruce Parker (RIP)]

BSF tap and dies sets are available quite easily. BSF is the same as 'NF' except the pitch of the threads is 55 degrees instead of 60.

[Grant Bowker]

https://maccmodels.co.uk/batometric
The link above is to a chart giving metric dimensions for BA threads. The "close BA to metric match" I referred to is 0BA which is almost exactly a M6-1.00 thread, others aren't as good. The company (UK location) sells both BA fasteners and taps/dies.
Another source for BA fasteners, taps and dies is https://britishfasteners.com/ located in New York State.

[rob love]

Originally Posted by Bruce Parker

BSF tap and dies sets are available quite easily. BSF is the same as 'NF' except the pitch of the threads is 55 degrees instead of 60.

Not sure what you mean by "is the same". None of the threads per inch (TPI) match between BSF and UNF.


I will agree that any of the BSF, BSW, or BA threads are easily available on ebay as well as other sites. Even left hand threads can be found with a bit of effort.

[Ron Pier]

I have a complete range of BA taps and dies from 0BA to 6BA. It's easy and cheap here in UK. I use this guy all the time for screws/nuts/bolts etc. taps and dies. https://www.ba-bolts.co.uk/

Ron