Anderson Metals Brass Pipe Fitting, Solid Square Head Plug, 1/8" Male Pipe Solid square head plug for closing the end of a pipe or fitting Male National Pipe Taper (NPT) threads for connecting to a female threaded pipe Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability Operating temperatures range from -53 to 121 degrees C (-65 to 250 degrees F) Meets specifications ASTM B584 and ASME/ANSI B16 for quality assurance These fittings contain lead and are not allowed by federal law to be installed for potable water use in the U.S.A. and its territories.