Adapters included with Hikvision pendant cap

[regexaurus]

I'm wondering about the couplers/adapters included with Hikvision pendant caps, such as the PC140 shown below.



The photo shows the pendant cap with a coupler already threaded onto the pendant stem. I think that coupler then threads onto the male threads of a Hikvision pendant mount / mount extension. I'm curious about the coupler/adapter that appears in the left of the image above, with male threads on one end. What type and size are those male threads? It doesn't seem like those are intended to be used with the Hikvision pendant mount...?

Thank you!

 

[SpacemanSpiff]

Been a while since buying Hik's... I recall the extra couplings, but I never looked hard at them to figure out what options they brought. I have a bag of them for the scrap aluminum pile when I go to the salvage yard.

 

[regexaurus]

Been a while since buying Hik's... I recall the extra couplings, but I never looked hard at them to figure out what options they brought. I have a bag of them for the scrap aluminum pile when I go to the salvage yard.

What I would like to discover is that the male threads on the coupler I pointed out are 1.5" NPT, which would allow me to use a connector/coupler like this to connect the pendant cap to a 1.5" NPT pipe.