Our female x male adapters are made of brass or aluminum which helps resist corrosion, pressure, and wear. Specifications: Standard Finish: Brass Optional Finish: Aluminum Custom thread specs available upon request Download Spec SheetTabsPart Table Part Number Size Finish A34F2-34MGH ¾" F NPT x ¾" M GH Brass A1F2-1M1 1" F NPT x 1" M NST Brass A15F1-34MGH 1½" F NST x ¾" M GH Brass A15F1-34M2 1½" F NST x ¾" M NPT Brass A15F1-15M2 1½" F NST x 1½" M NPT Brass A15F2-15M1 1½" F NPT x 1½" M NST Brass A2F2-15M1 2" F NPT x 1½" M NST Brass A2F2-25M1 2" F NPT x 2½" M NST Brass A25F1-34MGH 2½" F NST x ¾" M GH Brass A25F1-34M2 2½" F NST x ¾" M NPT Brass A25F1-1M2 2½" F NST x 1" M NPT Brass 327-1RBA 2½" F NST x 1½" M NST Rough Brass 327-2RBA 2½" F NST x 1½" M NPT Rough Brass 327-3RBA 2½" F NST x 1½" M NPSH Rough Brass 327-1PCA 2½" F NST x 1½" M NST Polished Chrome 327-3PCA 2½" F NST x 1½" M NPSH Polished Chrome 327-1PBA 2½" F NST x 1½" M NST Polished Brass 327-3PBA 2½" F NST x 1½" M NPSH Polished Brass 327-1PL 2½" F NST x 1½" M NST Red Plastic 327-3PL 2½" F NST x 1½" M NPSH Red Plastic A25F1-2M2 2½" F NST x 2" M NPT Brass A25F1-25M2 2½" F NST x 2½" M NPT Brass A25F1-3M2 2½" F NST x 3" M NPT Brass A25F2-25M1 2½" F NPT x 2½" M NST Brass A3F2-25M1 3" F NPT x 2½" M NST Brass A4F1-4M2 4" F NST x 4" M NPT Brass A4F2-25M1 4" F NPT x 2½" M NST Brass A4F2-4M1 4" F NPT x 4" M NST Brass A4F2-45M1 4" F NPT x 4½" M NST Brass A45F1-25M1 4½" F NST x 2½" M NST Brass A45F1-4M2 4½" F NST x 4" M NPT Brass A6F2-6M1 6" F NPT x 6" M NST Brass