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TodaysTools Backnut Spanner Tap 1/2" - 3/4"

4.4 (129 reviews)
SKU: 260223155530847 EAN: 5018578006046

Compare 1 price for TodaysTools Backnut Spanner Tap 1/2" - 3/4" — from £9.99 across 1 UK seller including Toolstation.

£9.99 20h ago
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Customer Reviews 129

4.4
129 reviews
5 star
96
4 star
13
3 star
6
2 star
2
1 star
12
Tap nut spanner!
5.0
February 20, 2026
Toothbrush King Verified Purchase

Reasonable Dosh for a time saving nut fastener for awkward sinks

Just the job for kitchen taps
5.0
February 17, 2026
254c5714-4387-5c31-b49f-79b5da5c2fbe Verified Purchase

Perfect fit for the taps under the sink. Made the job a lot easier

Excellent
5.0
February 10, 2026
095cf5dd-053c-5b72-8bdf-1dc5898dbd47 Verified Purchase

Excellent box spanner. Easy in a confined space behind a sink bowl.

If you haven’t got a metal file you will need one to use this spanner to remove the burrs so it fits on the nut.
2.0
October 5, 2025
Jon tradesman Verified Purchase

Cheaply made. Had to file burrs off around inside the socket so it would fit on the tap nut.

Helped me out in an awkward situation!
5.0
August 28, 2025
2f10c73a-64c1-5673-b2d6-358c66229b5b Verified Purchase

A handy piece of kit for confined spaces and very cost effective, worked well installing a bottom entry fill valve in a crampped space. Low cost so why not add it to the tool collection

Great tool
5.0
July 31, 2025
BTBS Verified Purchase

We used the tool the day we bought it and it was a godsend

Best among the competition
5.0
July 20, 2025
1208dc85-fdd3-5f72-9ed5-e71db130c428 Verified Purchase

Amazing helpful staff and really competitive prices.

Backnut box spanner
5.0
June 26, 2025
58658093-9c44-522f-830f-55e312ae6b11 Verified Purchase

this spanner is just the job in a tight space, good quality heavy guage piece of kit, highly reccommend.

Great tap spanner
5.0
June 11, 2025
Jimmydoll Verified Purchase

Great tool alrhough doesnt have the cross bar included. However did the trick with just hand tightening

Very useful, but...
3.0
June 7, 2025
Oli School Caretaker Verified Purchase

The spanner is in metric, which seems odd for an imperial sized nut (1" A/F in my case). Had a particularly difficult nut to remove (corroded on). This spanner started slipping round the nut, and I had to buy a 26mm deep socket. Although, I admit, this was (hopefully) a one-off situation.

Decent
5.0
May 31, 2025
Acbb Verified Purchase

Just what i needed for taps, product seems well made

Wrong size forme
1.0
April 30, 2025
c3ab5a25-347d-5178-8f32-fed10d5fc0c3 Verified Purchase

Good tool but too small for my tap nut which is 40mm

Back nut spanner, but what size is it!
4.0
April 10, 2025
HandySimon

My task was to remove a bath mixer cartridge which turned into a classic example of why plumbing is such a pain. To start with this items description doesn’t relate to the size of the item. I would imagine it means something if you are a plumber but a general diyer will take a more simple approach like measuring the nut and finding a spanner to fit it. For your info the smaller size is 27mm (1/2”??) and the larger size is 32mm (3/4”??). Leading on from this, although not a criticism of this item directly, you may then find the nut you are trying to get off is slightly bigger, as at some point plumbing parts manufacturers decided to slightly alter the nut size just to add in an extra challenge! This was the case for me and I ended up adapting the larger size of this spanner to fit the nut. I think some other reviews have mentioned filing down the nut to fit.

Small size.
1.0
March 14, 2025
Biru Verified Purchase

It is not useful for my purpose. It is smaller than what I wanted and toolstation didn't find bigger size than that. So I returned it.

Ordered wrong size
5.0
March 11, 2025
JanG16 Verified Purchase

I ordered the wrong size which I realised when I went to my local store with 'Click & Collect'. The person reassured me I could have a refund, which I did! Thank you.

Useful tool
5.0
January 31, 2025
Phillip 11 Verified Purchase

Excellent tool , made the job so easy , useful bit of kit .

Does the job
4.0
January 23, 2025
Gordon321 Verified Purchase

Does the job. It’s a box spanner. Not much more can be said.

Good Fit On Nut
5.0
January 12, 2025
Mhut Verified Purchase

Fits base of tap holding nut as should, with awkward small space used able to achieve good grip to tighten nut solid.

Makes tap fitting so easy
5.0
January 4, 2025
Vava Verified Purchase

Well made and makes removal and installation of tap back nuts a breeze. I used it on plastic and metal nuts and it fitted well.

Remove 1/2” backnuts, more difficult to access than most backnuts
5.0
December 19, 2024
SXDave Verified Purchase

Purchased this to replace some taps the were very difficult to access. It seems a bit oversized compared to the 1/2” backnuts I was removing and fitting but it did the job ok so I am happy with my purchase.

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