There is a reason Jeg's and Summit's house-brand stuff is cheaper. I never bought any Summit fittings, but at least one out of ten Jeg's AN fittings had some messed up threads on them. Usually just burrs or something that could be fixed, but why should I have to? I just stopped buying them.
There is a possibility the reason housebrand stuff is cheaper is the same reason brand X parts are cheaper then parts for a mopar...much larger quantities
(Just thinking out loud here)
