103-N3-PK(5), Coupler, 3/8" Female x 3/8" Female NPT, Pack of 5, Threaded, Machined Fittings. Suitable for use with Brass, Bronze, Copper, Steel, Aluminum, and Iron Pipes
Standard Maximum Operating Pressure: 250 PSI, Operating Temperatures range from -65° F to 250° F
For Maximum Leak Resistance it is recommended that you utilize a pipe sealant with these fittings
Not for use with Potable water, fittings may contain trace amount of Lead
Be sure to measure carefully, NPT Threads are not the same as UNF Threads