Hi All,
Just manufactured a bracket for the bull bar to locate the male pneumatic fitting, ( the female will attach to a corded tent pole with a modified safety vest flag). I purchased from Repco a 1/4 nitto type run of the mill packaged fitting-no mention of the thread type any where. It is in fact a 1/4 BSP 19 threads per inch. For the record 1/4 NPT is 18 tpi.
For anyone doing the same it may save you some time when you tap the hole
Cheers Obi