3/8" Compression Fitting Thread

[benoitmeunier]

I’ve been using Fusion360 for a while now and I’m comfortable creating NPT threads. However, I’m struggling with creating female compression fittings threads, specifically 3/8” for plumbing purposes.

I’ve followed various tutorials and tried different techniques, but I still can’t seem to get it right. Am I missing something fundamental? Could someone point me in the right direction or share any resources that could help?

Thanks in advance for your assistance!

[MRWakefield · Accepted solution]

I've just done a very quick search and it would appear to be 3/8" BSP (G3/8) (for 15mm copper pipe). Is this what you're looking for? If so you'll find it in various guises:

Hope this helps.

[Warmingup1953]

Do you need to (re) create the Nut itself that compresses the olive onto 3/8" Copper tube? Does 9/16 – 24 UNEF sound about right?

[benoitmeunier]

Intriguing. And that's a good question. I also did a search, but wasn't able to find what this thread is. Here what it need to be plugged to: [Faucet Connector, Braided Stainless Steel-3/8-Inch Female Compression Thread X 3/8-Inch O.D. Copper Tubing Coupling]

[benoitmeunier]

UNEF? It's maybe UNEF. I guess ... I'll need to test it. How would I know? It's too plugged it to a  Faucet Connector, Braided Stainless Steel-3/8-Inch Female Compression Thread X 3/8-Inch O.D. Copper Tubing Coupling. 

[MRWakefield]

Are you able to take measurements of any parts that you have to hand?