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What thread is this?
scudderfish - 21/7/13 at 02:46 PM

A temp sensor of unknown origin. It measures 3/8" over the threads and has 28 tpi. Doesn't seem to be BSP or NPT.



?

Regards,
Dave

Litemoth - 21/7/13 at 02:52 PM

m10 x 1 - ish?

Threads look like they've been in the wars a bit

liam.mccaffrey - 21/7/13 at 02:54 PM

Could it actually be 3/8ths x 28tpi??
What is it from? Is it the correct male thread? Did you have trouble getting it out?

[Edited on 21/7/13 by liam.mccaffrey]

John P - 21/7/13 at 02:56 PM

Could it be 1/8" BSP.

That would be 0.383 Dia x 28 TPI.

scudderfish - 21/7/13 at 03:04 PM

quote:
Originally posted by John P
Could it be 1/8" BSP.

That would be 0.383 Dia x 28 TPI.


Displaying my fundamental lack of knowledge, why would a 1/8" thread be over 3/8" across?

ETA - There are a bunch of sensors that are 1/8" BSP, I just thought that this was 3/8"

Yes it is a bit knackered, and deserves to be for the grief it has given me!

[Edited on 21/7/13 by scudderfish]

Litemoth - 21/7/13 at 03:04 PM

I would have said 3/8" UNF off the cuff but that would be 24 tpi.

Sure it's 28 tpi?

Litemoth - 21/7/13 at 03:05 PM

quote:
Originally posted by scudderfish
quote:
Originally posted by John P
Could it be 1/8" BSP.

That would be 0.383 Dia x 28 TPI.


Displaying my fundamental lack of knowledge, why would a 1/8" thread be over 3/8" across?



Because BSP sizes relate to the hole up the middle of the pipe not the outside diameter.... It causes much confusion.

scudderfish - 21/7/13 at 03:08 PM

quote:
Originally posted by Litemoth
Because BSP sizes relate to the hole up the middle of the pipe not the outside diameter.... It causes much confusion.


Gah!

I am confident that it is 1/8 BSP then given the number of other similar sensors I've seen with that thread.