MADE IN AMERICA. The Water Armor®, ½” Lead-free* F1960 PEX Male Threaded Adapter made from ECOLINE® alloys is ideal for your plumbing project. The MNPT Adapter configuration is best used for plumbing projects that require a transition from F1960 PEX tubing to a female threaded pipe, fitting or valve. The product is used for both commercial and residential plumbing installations. The MNPT Adapter is composed of one F1960 PEX barbed end for use with Expansion PEX tubing and one male threaded end complying with the National Pipe Thread standard. Our Lead-free* ECOLINE® alloys provide outstanding dezincification resistance and are safe to use for potable water applications in all 50 states, including California.