The AN thread (also A-N) is a particular type of fitting used to connect flexible hoses and rigid metal tubing that carry fluid. AN fittings are a flare fitting, using 37° flared tubing to form a metal-to-metal seal, meet SAE Aerospace (AS) standards. This blog will introduce more details about An Fitting Size Chart.
Difference Between AN Fittings and JIC Fittings
AN Fittings are similar to other JIC 37° flared fittings, which is their industrial variant. DO NOT use AN fittings with different flare-type fittings. This will cause leaks and damage to the fittings. AN fittings remain prevalent today. However, the U.S. Military is canceling many of the true AN/AND standards and replacing them with AS (Aerospace Standards) standards developed, again, by SAE.
AN fittings differ from commercial threads in that they are class 3 instead of class 2 and generally UNJF rather than commercial UNF. Threadform: UNJ -3A or 3B.
AN fittings range in size from -2 (dash two) to -32 in irregular steps that each equates to the outer diameter of the tubing. The outer diameter of the tube or hose that each fitting is to be used for is correlated with the inner diameter of the fitting itself.
Table of An Fitting Size Chart
The table below lists the specifications of An Fitting Size Chart ranging from dash-two to dash-thirty-two, along with the corresponding SAE thread sizes.
QC Hydraulics is a supplier of AN and JIC fittings and adapters for over 20 years. Please contact us for more details if you are interested.
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- JIC Female Weld-on Fittings
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- JIC Male Hose Fittings
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- JIC Male Compression Fittings
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- 43 series JIC Female Hose Fittings
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- JIC Male Female Tee
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- ORB Male JIC Male