Common types of U.S. fire hose thread include National Hose Thread (NH) or National Standard Thread (NST), National Pipe Straight Hose Thread (NPSH, NPS) and Garden Hose Thread (GHT).
Fire Hose Coupling
ANSI Standard Hose Coupling Threads for NPSH, NH and NHR Nipples and Coupling Swivels
A guide to fire hose couplings - MAFCO- Fire Fighting Equipment Fire Hydrant Valves Fire Hose Nozzles Fire Hose Coupling Manufacture
What Threads are on Camlock Fittings?
Adapter Guide
NFPA 1963: Standard for Fire Hose Connections，The Guide of Fire Hose Adapters and Fittings - Fanovo Industries
Change & Reduce Threads From 2 NST (NH) Female To 1.5 NST (NH) Male Threads. Hook two different sizes of hose together, or connect to an outlet.
2
1.5/2.5 Inch American Standard Thread Nst Fire Hose Nozzle - China Nozzle, Hose Nozzle
Hard suction hose - Wikipedia
Fire Hose Coupling
Fire Hose Adapters and Fittings: The Definitive Guide
Fire Hose Adapters and Fittings: The Definitive Guide
Tapered Pipe Threads and Fittings: Making the Connection
ICM INDUSTRIES-NH Coupling Thread Parts -2023.pdf
Zoro Select Fire Hose Nozzle, Adjustable Gallonage Nozzle, 1 1/2 in Inlet Size, 80 gpm Max Flow Rate, NST Thread 6AKC8
