Stainless Steel Flare Fittings

[1001001]

Anyone have a good source for aviation grade stainless steel 37º fittings, both NPT and bulkhead (for firewall penetrations)?

I'm installing a flo-scan flowmeter in the plans position (tunnel) in my RV-10 and the instructions that came with it specify to use "ONLY" steel fittings on the instrument body. It has 1/4" NPT female ports, and I need to fit up to AN style flare fittings (female end on hoses).

[mulde35d]

Originally Posted by 1001001

Anyone have a good source for aviation grade stainless steel 37º fittings, both NPT and bulkhead (for firewall penetrations)?

I'm installing a flo-scan flowmeter in the plans position (tunnel) in my RV-10 and the instructions that came with it specify to use "ONLY" steel fittings on the instrument body. It has 1/4" NPT female ports, and I need to fit up to AN style flare fittings (female end on hoses).

I have used ANplumbing.com. Aircraft spruce has some as well. Just put in the AN number with a J at the end. For example, AN823-4J rather than the usual aluminum fitting which is identified by the D in AN823-4D

[Flyhud]

I’ve bought quite a bit stuff from this outfit.

https://military-fasteners.com/fitti...pters/AN816-6J

[1001001]

Thanks for the replies! Spruce's offering is extremely limited in stainless (and their search function is really bad in general)--I applied the "J" at the end in a search and it seems SkyGeek.com may have them as well as with the MilitaryFasteners.com.

I had forgotten the -J postfix meant stainless, so thanks!

[Rick_A]

Why do you want to use stainless steel? It’s common to use steel fitting FWF, but stainless is not normally required.

[jrs14855]

Internal corrosion has been a problem with plain steel.
Try Rich Industries 928-788-2777 One of the largest stocks of AN hardware in the US.

[1001001]

It's really weird how this is going...I found the bulkhead and NPT fittings at SkyGeek for 1/2 the cost as Military fasteners (which didn't have the NPT fittings), but they had no AN924-6 nuts in SS, so I had to buy those at Military Fasteners (which only had them in 10-packs). Spruce had neither in the size I needed in stainless.

So the shipping costs from multiple vendors will likely equal the cost of the fittings.

[jcarne]

Get ahold of Tom S at tsflightlines or Steve at aircraftspecialty. I’m betting they can hook you up.

[1001001]

Originally Posted by jcarne

Get ahold of Tom S at tsflightlines or Steve at aircraftspecialty. I’m betting they can hook you up.

I'm trying to lay out fitting locations to get some dimensions to send to Tom. He mentioned he could get the fittings but didn't offer that he had them or could send them back when I bought some other hoses from him.

I'm going to fit up with aluminum fittings while I'm waiting for the stainless ones, then do the permanent install with stainless steel when I get the hoses.

[wirejock]

Eliminate the "D" and you get steel part numbers.