Pump Nut Spanner 52mm Product Code: 37949

2'' (52mm). 400mm long. Quality tool for use on most nuts next to domestic circulating pumps.


  • Steel Construction
  • Suits Most Nuts
Additional Information
Technical Specification
  • Brand : Monument Tools
  • Total Product Weight : 0.103 kg
  • Model No : SFX2040G
  • Pack Size : 1
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery: €15

Free delivery on all orders over €70.00

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Hopefully you won't need to return an item, however, if you do, it is our aim to make this as simple as possible. By following the guidance below you can help us to help you when a product is not what you expected, or is faulty. Your statutory rights are not affected by this guidance.


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€22.95 Incl. 20% VAT

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Pump Nut Spanner 52mm is rated 3.8 out of 5 by 8.
Rated 5 out of 5 by from Pump Nut Spanner 52mm Pump Nut Spanner 52mm A 'propah' mans tool. Heating pumps...no problem 'ave it!
Date published: 2013-10-02
Rated 3 out of 5 by from Variable quality mind the gap! Bought 2 of these to remove my thermal store circulating pump, the jaw gap is variable as others have reported, at the open end one was 52.5 mm, the other 51.7 mm (not great for a 52mm pump nut!), the first one fitted well, the second would not "slide" on to the nut, I had to lower it on from above and it was tight but just fitted, it seems that the majority of the opening is about 52mm but the gap at the open ends does vary. Glad I got the two! Pricey at £20 each given the variable gap opening.
Date published: 2013-04-03
Rated 5 out of 5 by from Big, heavy, right size. There's not much you can say about a spanner. It fitted my CH pump nuts perfectly - there wasn't enough room around them to use an adjustable wrench or even one of the rubber-band tools. It seems pricey for a single spanner with limited uses but it looks and feels like it will last several lifetimes and its still cheaper than calling a plumber out.
Date published: 2011-08-18
Rated 4 out of 5 by from great for powerflushing etc i use 2 of these everyother day - for the money they have become priceless overtime. as many others have said it will not always fit but in my experience you can normally weasel it onto the pump nut one way or another. ideal for putting new valves on. great tool for powerflushing adaptors perfect for getting that last little tighten also perfect for the extra leverage on stubborn old valves (with a little heat ;-)
Date published: 2010-03-29
Rated 3 out of 5 by from Not good for tight spaces As the title suggests, only useful if you've got the space to swing it. If you have got the space then its length is great for applying some serious leverage to fouled nuts.
Date published: 2010-03-25
Rated 4 out of 5 by from 52mm Spanner Received a 52mm spanner as described , already had an adjustable that fitted but was too long to be used in the space available, the Monument spanner did the job nicely.
Date published: 2009-11-27
Rated 5 out of 5 by from 52mm Spanner Unlike the other reviewer, screwfix delivered a 52mm (has "52mm" on the handle too). Better than the adjustable pump spanner I had. I wish I bought two, as the pump I had to replace had the tightest fit ever. This spanner did the job (whilst the adjustable pump spanner just failed - kept slipping etc) I thought that this spanner was expensive... so I had a search, found some £300+ spanners. Couldn't believe my eyes. After seeing that, this one seems to be a bargain!?! :)
Date published: 2009-11-12
Rated 1 out of 5 by from Not a 52mm Spanner Although advertised as 52mm, it's actually 50mm (as marked on the spanner) - therefore not suitable for pump nuts! Don't wait until you're at a customer's house to find out.
Date published: 2008-12-02
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