Faking A Trapezoidal Left Hand 16 X 2 Nut

[rgsparber]

I have to admit that I didn't measure the nut, just used my thread gages on the rod. Nothing but 13 TPI came even close so I assumed that was why the nut almost fit. I've done my share of single pointing but it has all been SAE. I do have the gears to convert my lathe to metric but have never done it. In order to single point a nut, I would have also had to grind the proper profile for a boring bar. It was far quicker just to bore out half of the threads.

The nut came from Lenart's Ace Hardware in Mesa, Arizona. It is one of those very rare old time stores with many extremely knowledgeable staff plus a "parts room" with such odd ball fasteners as large left handed nuts. Wonderful place!