Aluminum 1" Female NH to 2 1/2" Male NH Male Size_5 Inch NH / NST threads are

NH / NST threads are used by most fire departments

REF/PN: MIL-H-24606

Hose must be unrolled before water valve is opened

3 inch hoses are coupled with 2 1/2 inch couplings

5 inch NH / NST which is very common

Aluminum 1" Female NH to 2 1/2" Male NH Male Size_5 Inch NH / NST threads areAluminum 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. The Safe Water Drinking Act section 1417 requires "Lead Free" products to be a minimum of 99. 75% lead free. Aluminum Female to