In order for two components to fit properly, thread types must be compatible. See the list below for thread types that can be used together.
** We had previously indicated GHT as compatible with 3/4-NH. This was incorrect. Oops... sorry.
There are several different fire hose coupling standards in use in the U.S.
February 7, 1990
April 4, 1983
COUPLING ASSEMBLY, HOSE (FIRE, WOVEN-JACKETED,
RUBBER- OR FABRIC-LINED AND UNLINED)