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|NIPPLE, Flared Tube and Pipe Thread|
AN NIPPLE STEEL FITTING
5052 is the preferred alloy for fuel lines, much stronger than 3003, better in fatigue, and still easy to bend and flare, but more costly. For complicated runs, I make a trial fit with cheap readily available 3003 , then the final with 5052. I have ordered this a few times in 6 or 12 foot lengths, and have allowed it to be coiled to save shipping. Unfortunately, it came coiled (less desireable) but A/C spruces computer doesnt seem to reduce the shipping back down from oversize charges. (So you might want to inquire how to actually save shipping, if you go that route. Doesnt seem automatic.
These flare fittings are always packaged in individual paper bags to prevent the flare surface from being scratched and also protects the threads, which is great practice. Throughout the years, I have never received a scratched or damaged flare fitting from Aircraft Spruce.
AN FITTINGS AN816-6D NIPPLE
Good quality low cost fitting. Experimental builders can also drill out the threaded portion to increase flow without much danger of weakening the fitting threads.
AN FITTINGS AN816-6-2D NIPPLE
Everything went smoothly, delivery quality on a hard to find item.
AN816-4-4 STEEL NIPPLE
AN FITTINGS AN816-2D NIPPLE
AN FITTINGS AN816-6-6D NIPPLE
AN FITTINGS AN816-4D NIPPLE
AN FITTINGS AN816-4D NIPPLE
AN FITTINGS AN816-4-4D NIPPLE
Please note, Aircraft Spruce Canada's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce Canada assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.
AN816 nipple fittings are straight NPT at one end and 37 degree flared at the other. All types of AN816 are 37 degree flare.
Correct, AN816-6D has 9/16-18UNF 37* flare thread on one end, and 1/4" NPT on the other end.
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The AN816-8D will have two types of threads. One end wilL have 1/2 tube OD in which will be a 3/4-16 thread and the other end is a 3/8 NPT.
That would be an AN822.
This could be used with a rubber hose like a 303 but you would need to install the 491 fittings on the hose.