What's just slightly smaller OD than 1/8" NPT thread????

A NPT 1/4" thread that is made too small?

It is really common to have mismatches between 1/4" NPT threaded parts. Especially pressure regulators and pressure gauges. Even quality companies like Tescom pressure regulator and Baumer pressure gauges - will only go about 1-2 turns to the 1/4" NPT thread.

Also the difference in those NPT threads from different manufacturers seems to be same, so they have a good quality system producing the same (too small/big) NPT thread consistently. They are really NPT threads too, I have verified that as they never seem to match..

So, I'd use a 1/4" NPT tap to make the thread larger, if you think it is 1/4" NPT thread really..

however as THREADED PIPE CONNECTIONS ARE TAPERED , one should be able to run a pipe tap a little more into the threaded hole if what you have does not SCREW IN..

IF THE WALL OF THE TUBE IS THICK ENOUGH , you should be able to run a pipe die onto the tube a little more making yhe end of the tube smaller.

however as THREADED PIPE CONNECTIONS ARE TAPERED , one should be able to run a pipe tap a little more into the threaded hole if what you have does not SCREW IN..

IF THE WALL OF THE TUBE IS THICK ENOUGH , you should be able to run a pipe die onto the tube a little more making yhe end of the tube smaller.

---------------------------- I don't see the context here, but to answer the question literally, the nominal OD of 1/8" pipe is 0.405". 10mm (0.394") and 3/8" (0.375") are slightly smaller standard sizes.

This is useful if you make things from pipe:

I was in line at an industrial supply store behind an inventor who was picking up 2" ID ball bearings he had ordered to go on 2" pipe, to support a solar tracking array. He was quite upset to discover that they didn't fit because the OD of 2" pipe is actually 2-3/8", and it isn't precisely round or accurately sized. I decided not to mention that I'm equipped to build inventors' ideas.

I machined the thrust bearing on my tracking array to match the actual sizes of pipe.

I forgot to mention lamp tubing, which has straight (not tapered) thread of

There is no context because its a 10 year old zombie thread. Who knows. Maybe dpb is still looking for the answer.

There is no context because its a 10 year old zombie thread. Who knows. Maybe dpb is still looking for the answer.

Bob La Londe CNC Molds N Stuff

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No age discrimination! I still research the Titanic and Amelia Earhart.

I think I've found the first JFK bullet and what occurred on the Grassy Knoll.

From June 21sts 2023 dpb said

From June 21sts 2023 dpb said

Stratton--according to them,

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Either your computer clock or your time machine needs adjustment.

All the posts in this thread show in order on my reader. That's a direct quote from his last post in this thread.

I have probably installed thousands of F connectors and I never knew the thread on them. I probably installed even more BNC connectors. I tried very hard not to have to install RJ45 connectors, but sometimes that was the only answer. (IP cameras)

All the posts in this thread show in order on my reader. That's a direct quote from his last post in this thread.

I have probably installed thousands of F connectors and I never knew the thread on them. I probably installed even more BNC connectors. I tried very hard not to have to install RJ45 connectors, but sometimes that was the only answer. (IP cameras) Bob La Londe

------------------------ Be glad you weren't tasked with assembling Lemo and similar connectors invented by Swiss watchmakers. I got (and did) the jobs others gave up on.

I learned the specs because I've had to make electrical connectors or tooling that were unavailable to buy, to solve some unusual repair or R&D problem. The hardest was for 0.001" x 0.005" (20x100 micron) gold IC bonding ribbon. Not only was it tiny and delicate, it had to pass 3GHz.

Somewhat surprisingly I couldn't order the pin spanner for the microphone connector nut on a military Have Quick radio and had to have the shop machine one.

The USB TV tuners for my laptops run quite hot so I turned finned heatsink disks that screw onto the F connector.

I used one of those for a while, the first one ran very hot; the second one, not so bad. Then I made the mistake of going to Windoze ten and discovered that sound is much slower than light - I had a very noticeable lag of the sound behind the video; so I nnstalled a TV as my second monitor.

I used one of those for a while, the first one ran very hot; the second one, not so bad. Then I made the mistake of going to Windoze ten and discovered that sound is much slower than light - I had a very noticeable lag of the sound behind the video; so I nnstalled a TV as my second monitor.

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I have a 22" Vizio HDTV as the laptop's external monitor, with the video feed split to both. The Win 7 laptop is an older, thicker desktop replacement Dell D820 with a boot SSD and a second 1TB hard drive in the DVD drive compartment for recordings, and a USB3 Expresscard to save them to the archive at the full speed of the external drive, though not full USB3 speed.

By substituting a D830 with 1680x1050 screen resolution I can display four PDF tax form or instruction pages simultaneously, while filling in my spreadsheet copies of the forms on this laptop and its 19" external monitor. They do all that I need and I hardly ever use my Win 10 Thinkpad.

The HD screens are excellent for the complex display of digital radio: