[Size] The thread size of 4an is 7/16-20 UNF. [Seal] The AN thread of the flare is sealed by a 37 degree angle.
LokoCar 4AN Female to 6AN Male Flare Reducer Expander Adapter Fitting 2Pcs
LokoCar 6AN Female to 4AN Male Flare Reducer Fitting Adapter Black 2PCS
An4 4AN Female To 4AN Female 90° Degree Swivel Union Elbow Fitting Black
LokoCar 10AN Female to Female Straight Swivel Coupler Union Fitting Adapter 2Pcs
45 Degree 4AN Female to 4AN Male Swivel Flare Union Fitting Adapter Aluminum 1PC
2PCS 90 Degree Aluminum 4AN Female to 4AN Male Flare Swivel Fitting Adapter'
