Large Model Association Forum

Hi
Could some one please tell me what the thread is on a NKG CM6 spark plug
as i need to clean up the thead in a cylinder head.
Thanks for your help
Arthur

memory serves me right, its 10 mm fine, thats 10mmx1mm pitch, dont let the swarf fall on the piston

Thanks Allen,i wont for get to but grease on to the tap.
Arthur

And turn the engine upside down so any loose swarf falls out of the plug hole by nature of gravity and not in!!!!

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