Awafrican
Moderator
$8 on AmazonYou might see if you can find a forming tap rather than a cutting tap for that thread size. You might save more thread engagement if you chase it with the forming tap, or at least do so first before chasing it with a more-typical cutting tap. Of course it might not be worth it... the cheapest M14x1.5 thread forming tap on MSC is $63. Yeesh.
[doublepost=1492723255][/doublepost]You might be able to find a cheaper one if you have a local tooling place that carries Chinese stuff.
Edit: correction 19$ for both taps as a combo