Features: 1.Application: 6AN female to 1/4 NPT, the thread size of 6AN is 9/16 18 UNF, suitable for fuel line, fuel pump, fuel filter. Compatible with liquid oil, gasoline and water. 2.Sealing: The AN side is sealed by a 38 degree and the NPT side is sealed by a 60 degree tapered threads. 3.Aluminum Alloy: Pipe fitting adapter is made of aluminum alloy, anti corrosion and antirust, durable, good fixing performance, can be used for a long time and stable. 4.Stable Performance: After a variety of performance tests, the performance is stable, with good sealing and durability, to prevent oil, liquid leakage. 5.Perfect Replacement: Perfect replacement parts, can be well replaced or used to repair the original car damaged and worn out parts, better performance for your car. Specification: Item Type: 6AN Female to 1/4 NPT Male Adapter Material: Aluminum Product Color: Black Product Package:5pcs Product Material: Aluminum alloy Application: Suitable for Fuel Line, Fuel Pump, Fuel Filter. Compatible with Liquid Oil, Gasoline and Water Note: To ensure no leakage at the NPT end, sealant or PTFE (polytetrafluoroethylene tape) is strongly recommended.