4" NPSH Female Long Handle x 3.5" NH (NST) Male Adapter Aluminum FM25F15T That's right

That's right

both are the same threads just different names

Using 1" Red Single Layer Fire Hose Without Fittings

5" NPT Male: Can Connect To Any Female 5" Female Pipe Threads PVC

5" NPT Male Pin Lug Adapter

4" NPSH Female Long Handle x 3.5" NH (NST) Male Adapter Aluminum FM25F15T That's rightSpecifications Female Side 1 4 NPSH Female (National Pipe Straight Hose) Male Side 2 3. 5 NH (NST) Male (National Hose National Standard Thread) 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