Garden Hose Fittings and Thread Sizes Explained
Garden hose fittings are simpler than the hardware aisle makes them look. Learn male vs female, hose thread vs pipe thread, and why the washer does the sealing — and most leaks disappear.
Male vs Female Ends
The male end has threads on the outside. The female end has threads on the inside and spins freely so you can screw it on without twisting the hose.
Your spigot is male. The hose end that connects to it is female. The other end of the hose is male, and your nozzle or sprinkler is female.
Hose Thread vs Pipe Thread
Garden hoses in the U.S. use garden hose thread, often labeled GHT. It is a standard thread that fits spigots, nozzles, sprinklers, and hose reels.
Plumbing pipe uses a different thread, labeled NPT. The two can look close in size, but they are not the same and won't seal properly together. If you are connecting a hose to plumbing pipe, use an adapter made for that job.
Getting a Leak-Free Connection
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Check the washerHose threads don't seal on their own — the rubber washer in the female end does. A flattened, cracked, or missing washer is the top cause of leaks.
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Start by handThread the coupling on by hand so it doesn't cross-thread. If it fights you, back it off and start again.
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Hand-tight, plus a littleSnug it by hand. Pliers crush the washer and can bend brass out of round.
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Skip the tapeThread tape doesn't fix a hose leak because the threads aren't what seals. Replace the washer instead.
Quick-Connects
Quick-connect fittings snap on and off without threading. They make swapping nozzles and sprinklers fast and save wear on threads.
They have their own O-rings, which wear over time. If a quick-connect starts dripping, replace the O-ring or the fitting.
Caption: every connection on a hose reel — spigot, leader hose, inlet, and hose — uses standard garden hose thread.
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Shop the 250 ft CartFAQ: Hose Fittings
What thread is a garden hose?
In the U.S., garden hoses use garden hose thread (GHT), a standard that fits spigots, nozzles, sprinklers, and reels.
Is garden hose thread the same as pipe thread?
No. Pipe thread (NPT) is different and won't seal properly with hose thread. Use an adapter.
Do I need plumber's tape on a garden hose?
No. The rubber washer seals a hose connection. If it leaks, replace the washer.
Which end of a garden hose is female?
The end that connects to the spigot. It has inside threads and a swivel collar.
The Bottom Line
Know which end is which, keep hose thread and pipe thread separate, and trust the washer — not the threads or tape — to seal.
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