✅ SOLVED What's it?

[Toecutter]

This one has me stumped.

 

[Noah_D]

Thats what we experts call an "Indian Head Penny"...

just kidding, I don't know what it could be. My first thought is something plumbing related but most caps like that don't have a lip.

 

[MidMoTreasure]

Maybe some sort of freeze plug?

Edit: Here's a link: https://ricksfreeautorepairadvice.com/freeze-plug-core-plug-expansion-plug/

 

[Gene Mean]

Don't know but it looks like it took 2 taps to install it. One center tap first and then a big tap to finish. Hub of some kind?

 

[smokeythecat]

It's an air conditioning fitting.

 

[TooManyHobbies]

Looks like the hub for a pedal car axle, or a wagon.

 

[Retired Sarge]

I know it's not, but it looks like a miniature toy helmet.

 

[Jon Stewart]

fuel bowl on an old carburetor

 

[smokeythecat]

Funny you should say toy helmet. My dad did air conditioning, and I used to "borrow" some of his AC fitting to use as "Helmets" for my toy soldiers.

 

[Toecutter]

Funny you should say toy helmet. My dad did air conditioning, and I used to "borrow" some of his AC fitting to use as "Helmets" for my toy soldiers.

Hey Smokey, you sound 100% sure on that, is this a part that would still be used today and do you happen know what its purpose was?

 

[civil_war22]

It is a AC plug. I’ve found several. I was excited when I found the first one then had a HVAC guy with me detecting who immediately ID’ed it.

 

[Toecutter]

Thanks guys..