Hose Thread Specifications

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Marion Fire Department Hose Thread Specifications

Forestry Line 1" Coupling

  • National Standard Thread
  • National Hose (NH) Style

1 1/2" Hose Coupling

  • 1.99" Thread Diameter
  • 9 Threads Per Inch
  • 1.5" Inside Diameter
  • National Hose (NH) Style

2 1/2" Hose Coupling

  • 3.078" Thread Diameter
  • 6 Thread Per Inch
  • 2.5" Inside Diameter
  • National Hose (NH) Style

4 1/2" Hose Coupling (Hydrant Steamer Coupling)

  • 5.766" Thread Diameter
  • 4 Threads Per Inch
  • 4.5" Inside Diameter
  • National Standard Thread

Storz Coupling

  • 5" Hose Size