What Faucet Adapter From Screwfix Do You Actually Need to Connect a Hose or Filter to Your Tap?

If you’ve been searching for a faucet adapter screwfix stocks because you want to hook up a garden hose, a portable dishwasher, a water filter, or a washing machine to your kitchen tap, the good news is that this is one of the cheapest and easiest plumbing fixes you’ll ever do — usually under £10 and finished in five minutes with no tools. The catch is that “faucet adapter” covers about six different parts, and buying the wrong thread size is the single most common reason people end up making a second trip. This guide walks you through exactly how to identify the adapter you need, what sizes Screwfix and similar UK retailers carry, and how to get a leak-free seal the first time.

A quick note on language first: in the UK these are usually called tap connectors, tap adapters, or aerator adapters, while “faucet adapter” is the American term. They’re the same thing, and you’ll find them shelved under plumbing fittings and washing-machine accessories.

What exactly is a faucet adapter, and why would I need one?

A faucet adapter is a small fitting that screws onto the end of your tap spout (where the aerator sits) and converts that thread into a connection you can attach something else to — a hose, a quick-connect coupling, a filter, or an appliance inlet. You need one whenever you want to temporarily or permanently join a flexible line to a tap that was only designed to pour water into a sink.

The most common real-world reasons people buy one:

• Connecting a garden hose to an indoor tap — for filling buckets, paddling pools, car washing, or watering when there’s no outdoor tap.
• Running a portable/countertop dishwasher or washing machine that uses a tap-fed inlet rather than a plumbed connection.
• Fitting a countertop or under-sink water filter that draws from the tap.
• Attaching a pull-out spray, pet shower, or hair-washing hose to a standard mixer tap.
• Adapting a non-standard imported tap so a UK fitting will seal against it.

Because the spout thread isn’t standardised across every tap on Earth, the adapter is the translator between your specific tap and whatever you’re plugging in. Get the translation right and it never leaks; get it wrong and water sprays out of the join under pressure.

What size faucet adapter does Screwfix sell, and which one fits my tap?

Most faucet adapters Screwfix and UK plumbing merchants stock are built around the two standard aerator threads: M22 male (22mm outside diameter) and M24 female (24mm inside diameter). The overwhelming majority of UK kitchen and bathroom mixer taps use one of these two, which is why “universal” tap connectors are nearly always a dual-fit part that handles both in one body.

Here’s the fastest way to identify yours: unscrew the aerator from the very tip of your spout (turn it anticlockwise as you look up at it — a rubber glove or cloth gives extra grip). Then look at where it threaded in:

• If the threads are on the outside of the spout tip, you have a male thread — you need a female adapter, typically M22 female.
• If the threads are inside the spout, you have a female thread — you need a male adapter, typically M24 male.
• If there are no threads at all (a smooth or decorative spout, common on some designer and imported taps), you need a push-on universal rubber adapter that clamps over the outside with a hose clip.

The table below covers the adapter families you’ll actually run into so you can match yours before you buy.

If you only remember one thing: buy the dual-fit M22/M24 universal connector first. It’s cheap, it fits the clear majority of taps, and if it turns out you needed the push-on style instead, you’ve only lost a few pounds. For a deeper look at hooking a hose specifically to a pull-out spray tap, our guide on connecting a pull-down kitchen faucet to a hose adapter walks through the spray-head complication that trips a lot of people up.

How do I actually fit a faucet adapter so it doesn’t leak?

Fitting a faucet adapter is a five-minute, no-tools job: remove the old aerator, screw the adapter on hand-tight with the rubber washer seated, and check for leaks under full pressure. The leak-or-no-leak outcome comes down almost entirely to that little rubber washer and not over-tightening.

Step by step:

1. Remove the existing aerator. Unscrew it anticlockwise by hand. If it’s seized with limescale, grip it with a cloth or soft-jaw pliers — never bare metal pliers on a finish, which gouge the chrome.
2. Check the rubber washer. The adapter should come with a flat rubber O-ring or washer. Make sure it’s seated flat inside the adapter — this, not the metal threads, is what creates the seal.
3. Screw the adapter on hand-tight. Thread it on clockwise until it stops, then give it about a quarter-turn more with your fingers. You should not need a spanner. Over-tightening crushes the washer and causes the very leak you’re trying to avoid.
4. Run the tap and inspect the join. Turn the water to full and watch the seam where the adapter meets the spout. A few drips usually means the washer isn’t seated — back it off and reseat it. A steady spray means a size mismatch.
5. Attach your hose or appliance. Most universal connectors have a snap-on collar or a screw thread for the hose end; push or thread it on until it clicks or seats firmly.

If you’re fitting a filter rather than a hose, the principle is identical, but you’ll often have a small diverter valve in the adapter that switches flow between “normal tap” and “through the filter”. Those diverters use the same M22/M24 thread, so your sizing homework carries straight over. Our wide faucet water filter buyer’s guide covers the oversized-spout case, where a standard adapter won’t reach around the spout.

Can I connect a garden hose to my kitchen tap with a Screwfix adapter?

Yes — a universal tap-to-hose connector is exactly what you need, and it’s one of the most popular reasons people buy this part. You screw the connector onto the spout where the aerator was, then push your hose (or a quick-connect garden fitting) onto the snap collar. For most jobs that’s the entire solution.

Two practical warnings, though:

• Indoor taps run at full mains pressure with no backflow protection. If you leave a hose connected and submerged in a sink, water butt, or paddling pool, there’s a theoretical risk of back-siphonage contaminating your drinking water. For occasional use it’s fine; for anything permanent, use a connector with a built-in non-return (check) valve or a dedicated outdoor tap.
• Hot taps and rubber hoses don’t always mix. Standard garden hose is rated for cold water. If you’re filling with warm water, keep it brief and don’t run scalding water through a cheap hose.

For filling, watering, and car-washing from a kitchen mixer, the cheap universal connector does the job perfectly. Just don’t treat an indoor tap as a permanent outdoor supply.

Why won’t a “universal” faucet adapter fit my tap?

If a universal adapter won’t seal, it’s nearly always because your spout has no thread, an unusual non-metric thread, or a built-in pull-out spray that hides the connection. “Universal” covers the common M22/M24 range — it doesn’t cover every tap ever made.

The usual culprits:

• Smooth designer spouts with the aerator pressed or glued in rather than threaded. These need the push-on rubber clamp style, not a threaded connector.
• Imported or boutique taps using a thread that isn’t M22 or M24 — sometimes a smaller M18 or an American-spec size. Measure the diameter with calipers and match exactly.
• Pull-out spray taps, where the spray head detaches and there’s nothing fixed to thread onto. Here you adapt at the spray head or hose, not the spout.
• Tall or wide spouts where the adapter physically fits but the hose then fouls the sink. A flexible or angled connector solves this.

When you’re shopping UK retailers, it pays to compare what each carries — Screwfix leans toward trade plumbing fittings, while general DIY sheds stock more of the consumer garden-hose kits. If you’re comparing UK tap and fitting suppliers more broadly, our roundups of the best basin tap brands UK buyers trust and the white kitchen mixer taps B&Q shoppers compare give useful context on which tap brands use standard threads and which go their own way.

Brass vs plastic faucet adapters: which is worth the extra money?

For anything you’ll use regularly or leave connected, a brass (or brass-bodied chrome) adapter is worth the extra pound or two — it won’t crack under pressure, strips its threads far less easily, and handles hot water without warping. Plastic adapters are fine for occasional, light-duty garden use but are the first thing to fail.

The trade-off is straightforward: plastic is cheaper and lighter, brass is durable and reusable. If you’re connecting a portable washing machine that fills under pressure several times a week, or running warm water, spend on brass. If you just want to fill a paddling pool twice a summer, plastic is perfectly adequate. Either way, the rubber washer is the part that actually wears out, so keep a spare or two — they’re pennies.

FAQ

What thread size are most UK kitchen taps?

Most UK kitchen and bathroom mixer taps use either an M22 male (22mm outer) or M24 female (24mm inner) aerator thread. That’s why dual-fit M22/M24 universal connectors exist — one part covers the large majority of homes. Unscrew your aerator and check whether the threads are on the outside (male) or inside (female) of the spout to know which you need.

Does Screwfix sell faucet adapters for connecting a hose?

Yes. UK retailers including Screwfix stock universal tap-to-hose connectors, usually shelved under plumbing fittings or washing-machine accessories. Look for a “universal tap connector” or “tap to hose adapter” — they typically fit both M22 and M24 threads and snap onto a standard hose or quick-connect garden fitting.

How do I stop my faucet adapter from leaking?

Make sure the rubber washer inside the adapter is seated flat, then tighten only hand-tight plus about a quarter turn — never crank it with a spanner. Over-tightening crushes the washer and causes leaks. If it still drips, the washer is likely misaligned; if water sprays from the join, you’ve got a thread-size mismatch and need a different adapter.

Can I connect a portable washing machine or dishwasher to my tap?

Yes, with a mixer tap connector designed for appliance use — these have an M22/M24 thread on the tap side and a snap-on or screw collar for the appliance hose. Because the appliance fills under mains pressure, choose a brass-bodied adapter with a good rubber seal, and turn the tap off between uses to avoid leaving the join under constant pressure.

What if my tap spout has no thread at all?

Use a push-on universal rubber adapter that clamps over the outside of the spout, often secured with a small jubilee/hose clip. Smooth designer and some imported spouts have the aerator pressed in rather than threaded, so a screw-on connector has nothing to grip — the push-on style is the fix.

Are indoor tap-to-hose adapters safe for drinking water?

For occasional use, yes, but don’t leave a hose connected with its end submerged in a sink, bucket, or pool — that risks back-siphonage of dirty water into your supply. For any semi-permanent setup, choose a connector with a built-in non-return (check) valve, which prevents backflow and keeps your drinking water safe.

The bottom line

Buying the right faucet adapter screwfix or any UK plumbing merchant carries comes down to three minutes of measuring: unscrew your aerator, check whether the thread is M22 male or M24 female, and grab the dual-fit universal connector unless your spout has no thread (in which case go push-on). Spend the extra pound on brass if you’ll use it often, seat the rubber washer properly, and tighten hand-tight only. Do that and you’ll have a leak-free hose, filter, or appliance connection that costs less than a takeaway coffee.

About the author: This guide was written by the Avovida fixtures team, who specialise in faucets, tap fittings, and bathroom hardware. We test adapters across common UK tap threads and real spout types rather than relying on packaging claims, and we cross-check sizing against the standard M22/M24 aerator specifications used by major tap manufacturers.

About Avovida: Avovida (avovida.net) is a specialist faucet and bathroom-fixtures brand focused on kitchen and bathroom taps, shower fittings, filters, and accessories. Our recommendations favour fittings that meet recognised plumbing thread standards and carry a manufacturer warranty, because a £5 part that strips its thread or fails its seal isn’t a saving — it’s a leak waiting to happen. Always check that any pressurised appliance adapter carries an appropriate WRAS or equivalent compliance and a stated warranty before relying on it long-term.