350 trivia

[BRT-GTR]

      Hi Mike,
                   I use a company called Tracy Tools Ltd here in the UK.

                             http://www.tracytools.com/taps-and-dies/metric-taps-dies/5-x-75-metric

       I ordered one carbon steel die but they actually sent me two of differing makes. The threads were distorted on one but the second die was OK and the old jet could be hand screwed in so I used that one to recut the new jets. A HSS die would be better, they are usually better quality but come dearer for something that you may never use again !!
                           Brian.

[moonpup]

Thanks Brian.... my search begins. 

[OldSwartout]

A quick Google search found this place: http://www.victornet.com/tools/Metric-Taps-and-Dies/327.html with the 5mm x .75 listed.

[hardy]

https://www.avontapdie.co.uk/m5x075-metric-hex-die-nut-hss

Also, try this joint. A lot more pricey but it's a die nut. Would be easier to hold in the vice and screw the jet through.