4" NH (NST) Male x 4.5" NH (NST) Male Adapter Aluminum HA25S15T When the ears can't go

When the ears can't go down any further

Fire & Industrial 4” NH (NST) x 4” NPT Double Male Fitting Anodized Aluminum

Threaded Size (Inside Diameter): 3" Female NPT (National Pipe Tapered)

Without Couplings

4" NH (NST) Male x 4.5" NH (NST) Male Adapter Aluminum HA25S15T When the ears can't goSpecifications Male Side 1 4 NH (NST) Male (National Hose National Standard Thread) Male Side 2 4. 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