The Best Garden Hose Thread Specifications References. Parker's garden hose fittings and high flow quick couplers are solid brass with 3/4 garden hose thread. How do you measure outside hose threads?
12 rows nh = american standard hose coupling threads of full form nhr = american standard hose coupling threads for garden hose applications npsh = dryseal american. Odm = outside diameter of male. There are three typical diameter sizes of standard garden holes:
