7/16 x 19 tpi tap, and die

[the_asylum_wanderer]

Having spent my entire working life in engineering ( marine , and then production ) I know that threads are a minefield ,
This particular thread has been checked with micrometer and with thread gauges for the tpi .
Without doubt it is 7/16 x19 tp[ .
The thread is listed in the engineers handbook ( engineers bible ) but it is no longer in common use , mainly used for gas taps , and fuel systems .( ie Austin 7 )
If push comes to shove , then I will make a tap .as I only need it for tapping brass