Wrench for AN flare nut

[Cth6]

What is the wrench size for a -4 flare nut? Want to make sure that I am properly identifying the fitting and using the wrench size of the nut as a back up. Ex the -4 flare nut connecting to a AN823-4D

Sorry I googled it and could not find an answer.

 

[hgerhardt]

Google tells me 9/16" wrench flats, which also matches my recollection.

 

[plehrke]

Aircraft Specialty website

https://www.aircraftspecialty.com/kitplanehoses/orderhose.html

 

[Cth6]

Thank you

Thank you both! Exactly what I was looking for.

 

[mburch]

If you're planning to do much work with aircraft plumbing, consider picking up a set of flare nut wrenches, which are less likely to round off the soft aluminum nuts used with aluminum tubing:

They come in crowfoot form too, which also have their uses:

 

[lr172]

Google tells me 9/16" wrench flats, which also matches my recollection.

yes and -6's are 11/16

 

[jrs14855]

Tools

Mburch knows his tools.