Aluminum 3" NH to 2 1/2" NH Double Male Male Threads_NYFD National Park Service (NPS)

National Park Service (NPS)

Note: The most common 2 1/2 inch Mil Spec hose is coupled with NH / NST threads

which is also found in parts of New York City

If your FDC or female swivel connection is approx

Please verify thread type before ordering

Aluminum 3" NH to 2 1/2" NH Double Male Male Threads_NYFD National Park Service (NPS)Aluminum adapters are fabricated from seamless extruded 6061 T6 aluminum and hard coat anodized per MIL A 8625 Type III, Class 1. Threads have a blunt start Higbee cut with indicators on adjacent lugs. Part identifications are permanent and stamped prior to hardcoat. Adapters and components meet the requirements of NFPA 1963. Note 3 inch NH NST is very rare and is often confused with 2. 5 inch NH NST which is very common. If you have a fire department