3.5" NH (NST) Female Swivel x 2.5" NPT Female Rigid Adapter Aluminum Rubber Fire Hose 5" NST (NH) Female Hose

5" NST (NH) Female Hose To 1" NPSH Male Pipe

Inlet Size - 1" Inch

5” NPSH x 1

5” NPT Female x 2" NPT Male Fitting Anodized Aluminum

then it is usually referred to as an adapter

3.5" NH (NST) Female Swivel x 2.5" NPT Female Rigid Adapter Aluminum Rubber Fire Hose 5" NST (NH) Female HoseSpecifications Female Side 1 3. 5 NH (NST) Female (National Hose National Standard Thread) Female Side 2 2. 5" NPT Female (National Pipe Tapered) Working Pressure 300PSI Max Test Pressure 1000PSI Max Material T 6061 Aluminum (Aircraft Grade) Finishing Anodized (99. 9% Lead Free) NFPA Standards 1963, 4. 12, 5. 1 5. 6. 4 (Corrosion Resistance) Military Standards MIL A 8625 Type III, Class 1 Industrial Standards International ASTM B221 UL Labs Standards