Here’s a search I’ve failed at twice.

 

I am looking for a steel nipple that has the tiny hole.  The purpose is to connect to an oil pressure or fuel pressure gauge while mitigating possibilities of catastrophic oil loss. I would be really impressed if I could find it with a 45 degree.

 

Anyway, the engine side would be a 1/8 npt and the flared end could be a -2 or a -3.  Any help with a part number on this sneaky little gem would be greatly appreciated.

Larry,

 

Uh, there are several things you can do to achieve the desired result.   Here is one..... Suppose you take the standard steel fitting and bottom tap the interior from the NPT side.  Of course, you could do this for a standard metric or English thread size.  Then, find a matching threaded plug ( either an Allen head plug or just cut the end of a bolt off and groove it) in which you have drilled a wee hole thru the center.  Screw it in and use a center punch to "stake" the threads so that it cannot back out.  Voila!

 

Install this part in the engine orifice from which you will monitor the appropriate pressure.  Again, voila!  You will feel better that you cannot have a major leak out of that hole regardless of which cheap faulty part you have installed downstream.

 

Note that some of the things you need to accomplish this are available at your local True Value or Ace hardware.  They even have interesting stainless steel parts.  This is the inexpensive solution since you are using a standard steel AN fitting, slightly modified.

 

Otherwise, try a hopeless search thru Earl's Racing parts.

 

Another possible solution is to use an aluminum rivet that tightly fits in the fitting - rounded head at the 37 degree flare (45 is automotive, but solution #1 doesn't care) - with the center drilled out to your needs.  Nah, I like #1 better.