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ALWAYS check your AN fittings before installing
- Thread starter stigaro
- Start date
Read your oil cooler recommended fitting material. This looks like an aluminum fitting yet most recommend a steel fitting. I've had several "weeping" fittings with Vans supplied aluminum fittings and replaced with steel, sealed perfectly.
Good call. I’ve actually ordered the steel fittings to replace these.
If clocking is critical steel fittings seem to start getting tight "better" than aluminum fittings and it seems you have more "clocking" to get tight than aluminum which gets tight and only give you maybe 45-120 degrees to get clocked tight where steel gives one 45-270 degrees to get tight. Results may vary.
Curious where they were sourced from?
They came in my -14A firewall kit from Vans. I’ll be replacing them with steel for the oil lines.
And what sort of markings are upon them?
JM?
Attachments
"JM" is a manufacturer's mark. It does not designate adherence to an aeronautical standard. A true AN or MS fitting would typically include a manufacturer's mark and the required "AN" or "MS" mark.
Caveat; the AN816 standard with its marking requirements was replaced by an SAE AS4842/1A (and perhaps B). Handing the standards management to the SAE put it behind a paywall where we can't see it without coughing up $75. Anyone have a copy? if so, what are the marking requirements in the SAE-AS standard?
Caveat; the AN816 standard with its marking requirements was replaced by an SAE AS4842/1A (and perhaps B). Handing the standards management to the SAE put it behind a paywall where we can't see it without coughing up $75. Anyone have a copy? if so, what are the marking requirements in the SAE-AS standard?
Oh, wasn't sure what you were looking for. I know it is stamped with 816 on one facet and D on another. Might also say AN, but I can't confirm right now.
However, does adherence to an aeronautical standard guarantee a higher level of quality control? Honestly not sure.
Might just be me, but the blue color on this fitting looks to be a different shade than the usual AN fittings.
Don Broussard
RV9 Rebuild in Progress
57 Pacer
I was very surprised (but shouldn't have been) to see so many cheap "AN-style" fittings available via all the normal cheap shopping channels - it's been about 20 years since I bought any and back than there were the big auto suppliers like Jegs and of course the aviation suppliers like Aircraft Spruce. Both had pretty good quality. It must be a nightmare to ensure quality hardware today. 
