Torque values for AN aluminum fittings

Seem to remember some discussion about this earlier. Here are the recommended values:


AN TORQUE SPECIFICATION GUIDELINES


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Nut Minimum Torque Maximum Torque <o:p></o:p>
<o:p></o:p>
-02 50 80<o:p></o:p>
-03 70 105<o:p></o:p>
-04 100 140<o:p></o:p>
-05 130 180<o:p></o:p>
-06 150 195<o:p></o:p>
-08 270 350<o:p></o:p>
-10 360 430<o:p></o:p>
-12 460 550<o:p></o:p>
-16 700 840<o:p></o:p>
-20 850 1020<o:p></o:p>
-24 900 1080<o:p></o:p>
-32 1800 2000<o:p></o:p>
*Torque values are shown in inch pounds for aluminum fittings.<o:p></o:p>
Inch pounds/12 = foot pounds<o:p></o:p>
 
Last edited:

Randy V

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Great find!!!

I'm pretty sure that most (if not all) alloy fittings require lubrication of the threads which will alter the amount of clamping force for a given torque.
 
Did not mention that these values are for lubricated fittings. 30 wt motor oil or brand name hose assembly lube. Sorry for the omission..
 
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