Quote:
Originally Posted by RedBarchetta
Dex, they are "AN" (Air Force Navy) fittings. Mine are from Aeroquip, but Russell and Earl's also sell comparable (Aeroquip is arguably the better of the three, hence you pay more for them).
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Aeroquips are more expensive because they typically come certified for real aircraft use - Earl's and the others are not. Other than for ooooh value, any quality maker is just fine for street use.
A couple of years ago, an air maintenance house was being liquidated and they had a huge supply of Aeroquip fittings for which they'd lost (or didn't care to maintain) the certification chain. The fittings were going on eBay for absurdly low prices. Wish I'd had a few hundred to invest, but there are SO many fittings it's almost impossible to stock up for personal use...