Don't let it be said that I don't try to help!

the sensor connection website for pyrometer fittings and probes.

After searching all over the place, Napa who always has to order, over priced fittings and bungs...etc.

Getting a 1/8 inch stainless fitting for a Defi gauge shipped priority for about 12 bucks total.

The techs also jumped in and offered to send temperature vs millivolt curves for their 1/4 inch probes. All that's left for me to do is do my own curve for the Defi D-Gauge that I'm using. Seeing as that is impossible to find anyplace.

A resistance curve for a D-Gauge water/oil temp sensor would be nice. Mine is shot. Made a simple voltage divider pot and curved my gauge. It starts at 8.2k at 50 degrees f straight to 1.23k at 225 degrees. Then curves from there to .502 ohms at 300 degrees.

Anyway, if you're looking for pyrometer probe fittings, they have them.