If you have a 1/8 x 27 NPT female port and you need to connect a male 3/8 x 24 flared tube to it this thread adapter will make it happen. The male side is a standard 1/8 x 27 NPT and the female side is a 3/8 x 24 SAE. Made of brass and plated for use in automotive.
If you have a 1/8 x 27 NPT female port you need to convert to M12 x 1mm female flared tube port this thread adapter will work. The male side is 1/8 NPT at 12mm long. The female port is M12 x 1mm at 8mm depth. Plated for automotive use.