Size:The thread size of NPT is 3/8-18 NPT,6AN is 9/16-18 UNF.
Sealing:The AN side is sealed by a 37 degree angle and the NPT side is sealed with a 60 degree tapered threads.(Sealant or PTFE tape is recommended for installation)
Material:Aluminum alloy 6061-T6
Application:Can be used in vacuum reservoirs,hard-wired fuel pumps to regulators,fuel supply lines,etc.
Warranty:EVIL ENERGY provide the fitting 3-month warranty.Any problem you might have, please feel free to contact us via Amazon message.