Fitting: Equipped with a standard 1/4" X 4 0 TPI screw thread for easy and secure installation.
M7D Brass Displacement Lubricator 1/4"x40 TPI for Live Steam Engines
Microcosm M7D Brass Displacement Lubricator-Oil Injector for Steam Engine Models
M7D Brass Displacement Lubricator for Live Steam Engines 1/4"x40 TPI
M7C Brass Displacement Oiler 1/4"x40 TPI for Live Steam Engines Models
1/4"x40 TPI Brass Displacement Oiler for Live Steam Engines - Microcosm
M7B 1/4"x40 Brass Displacement Oiler – 3mm Line for Model Steam Engines
