Anyone with gauge & 26650 host?

[ArcticDude]

Could somebody confirm regular 26650 flashlight threadings for me. I wondering am I getting pitch right for 26650 battery tube (M31 x 1.25). :thinking:

-Or is it just my gauge..

Any help would be much appreciated!

:thanks:

 

[Lifetime17]

Hi AD,
Looks ok the gauge is sitting deep in the profile, Your OD at the top of the threads are you Major Diameter before threading.

Rich

 

[BowtieGuy]

As Lifetime said, your 1.25 gauge looks to be a real good fit on that thread; you'll probably notice that if you try the pitch on either side of the 1.25mm pitch, it will be a worse fit.

Someone correct me if I'm wrong, but I don't think that their is a standard thread pitch for a "26650" flashlight, I think you may find a slight variation between manufacturers.
You may find a 1.50, a 1.25, or even a fine 1.00 pitch on that size host.

 

[Lifetime17]

Hi,
yes as BT said sometimes the pitches are deviated from different manufacturers . And there is also a 0.5 fine pitch also.

Rich

 

[BowtieGuy]

Yep, you'll tend to see a lot of the 0.5mm, and the 0.75mm pitches in optical components like lenses and beam expanders.

 

[ArcticDude]

I have doubts that my gauge is wrongly labeled. That's why I'm asking. If the number would be 1mm or 1.5mm -then I could easily buy it.

Since Metric ISO standard usually skips M31 size -1.25mm pitch for M31 sounds even more extraordinary. :thinking:

So if anyone have 26650 flashlight and gauge

-please could you look and tell what number you got?


EDIT:

Found this :
https://www.fasttech.com/forums/4178300/t/2288018/tube-thread-size/1

Just looking my Yezl Y3 tube and according my gauge it's 1.25
Now I doubt even more my gauge labels :crackup:

 

[Lifetime17]

Hi,AD..
The XM900 takes 2-26650's i'll check that out tonight but dontknow how that will help when different manufacturers have different threading on their products.

Rich