This adapter screw onto thread size 18mm (M18XP1.5) with a 1/8 PT thread in the center for most temp gauges.
This is 1/8 PT (Japanese Pipe thread, same as BSP), not NPT although it does work with NPT fittings.
Each includes a sealing o-ring
This adapter screw onto thread size 18mm (M18XP1.5) with a 1/8 PT thread in the center for most temp gauges.
This is 1/8 PT (Japanese Pipe thread, same as BSP), not NPT although it does work with NPT fittings.
Each includes a sealing o-ring