MADE IN AMERICA. The Water Armor®, ½” Lead-free* F1960 PEX Female Threaded Adapter made from ECOLINE® alloys is ideal for your plumbing project. The FNPT Adapter configuration is best used for plumbing projects that require a transition from F1960 PEX tubing to a male threaded pipe, fitting or valve. The product is used for both commercial and residential plumbing installations. The FNPT Adapter is composed of one F1960 PEX barbed end for use with Expansion PEX tubing and one female 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.