It's not possible to put a gauge on the term "over tighten". Plumbers, pipe fitters, and steam fitters learn through experience how much torque to apply to a fitting.

When I was a younger man, I used to ask questions like this. The most cogent answer I got was from an old steam fitter: "Tighten it 'til it feels right."

This is why every automotive manual has torque specs for every bolt and screw. So whomever is working on it knows how ”tight” things should be.

Old thread, I know... but,

Use Pipe dope (Sealant paste) and "snug" it. Gas fittings like to be snug. Hand tighten as best you can, then 1/4 -1/2 turn with a small wrench.

Be careful not to get any dope inside the fitting. It'll inhibit gas flow resulting in a no fire or low heat condition.

And check for leaks afterwards.

Check for leaks three times: the day of, a week later, and a month later. Just to be safe. I am more than a little concerned that you have not experience with these fittings. Plumbers and pipe fitters spend years learning just the right" touch."

@todd_freeman18

What owner's manual?

You don't have to take my word for it. Google it.

You don't use pipe sealant or teflon tape on flared fittings..

Jake is absolutely right, again.

I wouldn't be so blunt about pointing out misinformation if we weren't talking about gas, and particularly propane.

I realize I embarrassed Todd, without giving him a chance to save face, and I apologize for that.

I did not think Jke was being rude, just straightforward. On the other hand, I though Todd's comment was a little catty. Let's all be civil, please.