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3/4" NPSH straight hose thread (3/4-14NPSH)

Where 3/4-14NPSH is used, its real dimensions, and how to connect it to other standards.

3/4-14NPSHThread standard

Designation3/4-14NPSH

Major diameter26.29 mm

Threads per inch / pitch14

Thread formstraight (parallel), 60 degree

Seals onflat washer or gasket in the coupling

Used on: US appliance and utility hose couplings, some washing-machine and pump hoses.

NPSH is a straight 14 TPI hose thread that seals on a gasket, not on the thread. Its 1.035 inch outside diameter is close to a 3/4 NPT but the straight form means it will not seal into a tapered NPT port without an adapter.

Quick-connect click fittings from Hozelock, Gardena and Karcher are proprietary and do not interchange. They all sit on top of a standard thread underneath, so the reliable way to move between brands is to adapt at the threaded tap or hose-end fitting, then use each brand's own connector above it.

Connect this thread

Connect 3/4" NPSH straight hose thread to Garden Hose Thread (GHT / NH)needs an adapter Connect 3/4" NPSH straight hose thread to 3/4" NPT (National Pipe Taper)needs an adapter Connect 1" NPSH straight hose thread to 3/4" NPSH straight hose threadneeds an adapter Garden Hose Thread (GHT / NH)related standard (3/4"-11.5NH)1" NPSH straight hose threadrelated standard (1-11.5NPSH)1-1/2" NH fire hose thread (NST)related standard (1-1/2-9NH)2-1/2" NH fire hose thread (NST)related standard (2-1/2-7.5NH)3/4" NPT (National Pipe Taper)often confused with 3/4-14NPSH

Sources: NPSH / NH / NHR hose coupling thread table, Fittings.space