Joint Industry Council Thread – Commonly referred to as just JIC fittings are metal to metal sealing type fittings have a 37° flare (sealing surface angle. original design specification for the fittings comes from the Society of Automotive Engineers (SAE) and these fittings are the most common American fitting type in Europe.
Are AN and JIC the same?
Technically No. AN stands for Air Force – Navy Aeronautical Design Standards (also known as “Army Navy”) that are used in U.S. Military aviation applications. These fittings are made to meet strict performance standards related to the aeronautical industry. Confusion between AN and the industrial counterpart, the SAE 37° fitting occurred. The Joint Industries Council (JIC), sought to clear the air by standardizing the specifications on this type of fitting by creating the “JIC” fitting standard, a 37-degree fitting
The majority of the hydraulic population agrees, the JIC (or SAE) 37 degree fittings are generally interchangeable with AN fittings. Generally now when people refer to JIC or AN they are merely referencing the 37 degree fitting.
The hose fittings on the Viper performance site are sold in AN-(dash) sizes.
How do I know my JIC/AN fitting size?
AN sizes are shown as a size number prefixed with a hyphen, so a -10 fitting would be called a “Dash 10″ AN fitting.
The number represents the OD (Outside Diameter) of the tube the fitting was designed to fit in the old AN specifications. The number represents the OD as multiples of 1/16”. Therefore, a -10 fitting was originally designed to fit an solid tube with an OD of 10 * 1/16″ = ⅝″ (~16mm).
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