NST Threads

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The table below contains the thread specifications for National Standard Threads (NST).  It should be noted that NST is not the only abbreviation for standard fire hose threads.  Other designations for the exact same threads include, but are not limited to, CHT (Chemical Hose Thread) and NH (National Hose).

To see our line of adapters with NST threads, click here.

SIZE ODM TPI
1" 1.375 8
1-1/2" 1.990 9
2-1/2" 3.0686 7.5
3" 3.6239 6
4" 5.0109 4
4-1/2" 5.7609 4
5" 6.260 4
6" 7.025 4

 

 

 

 

 

 

 

                           
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Last modified: 07/28/10