legines npt bushing 1/4" male x 1/8" female reducing adapter hex head pipe fitting 1200psi (pack of 5) legines legines hex bushing pipe fitting is made of brass and has a 1/4" male national pipe taper (npt) threaded connection and a 1/8" female npt threaded connection. this hex bushing fitting connects two pipes with different diameters and has a hexagonal head for an increased bearing surface when adjusting the fitting with a wrench. it has male npt threads on one end and female npt threads on the other for connecting to a female and a male threaded pipe or fitting. the npt threads create a tighter seal than straight threads. this fitting is made of brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability. brass can be connected to copper, brass, plastic, aluminum, and welded steel. the operating temperatures for this fitting range from -53 to 121 degrees c (-65 to 250 degrees f). <br><p> pipe fittings are components used for connecting, terminating, controlling flow, and changing the direction of piping in many different industries. when purchasing pipe fittings, consider the application, as this will affect material type, shape, size, and required durability. fittings are available threaded or unthreaded, in many shapes, styles, sizes, and schedules (pipe wall thickness).