What is the pitch of 9mm head nuts?

Thanks, I was asked to make some and it would have helped if they knew the pitch...now I need another tool 9-)...speaking of tools; the elephant is in the room. The Elephant Elephant 2
 
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Also helicoil tap kits have a next size up tap in same pitch as original damaged thread, ie check 8m/m helicoil kit, check mine later recalling it had a 9m/m tap, i think.

Know of the 4 size escalating kits i have here in metric normal pitch, the tap was next size up compatible, normal taps are available in 7 and 9 mm, just with the kit you may have a useful kit and tap, not a use once a lifetime tap... HTH j
 
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