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Union Fire Rated Brass BS 5-Lever Mortice Sashlock 81mm Case - 57mm Backset

4.7 (69 reviews)
SKU: 260223155457446 EAN: 5011802129108

Compare 1 price for Union Fire Rated Brass BS 5-Lever Mortice Sashlock 81mm Case - 57mm Backset — from £30.59 across 1 UK seller including Toolstation.

£30.59 4h ago
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Customer Reviews 69

4.7
69 reviews
5 star
58
4 star
8
3 star
0
2 star
1
1 star
2
Friendly professional staff who stick to solving your problem
5.0
October 13, 2025
NickW1 Verified Purchase

Trying to get the correct size lock to replace the existing one that had failed was not as easy as one would expect. Manufacturers seem to enjoy changes sizes by insignificant amounts (according to them) but which makes for a minefield of sizes and options.
The staff at Toolstation, Saffron Walden, were thorough, patient, extremely helpful and could not have been more pleasant to deal with.
We eventually found a suitable replacement which is working well.
I very much appreciated their friendly and professional service.

Union BS 5 Lever Mortice Sashlock 76mm Satin Chrome
5.0
August 12, 2025
wmprr00 Verified Purchase

High-security BS3621-compliant sashlock with smooth, reliable operation and a modern satin chrome finish. Durable, insurance-approved, and ideal for external doors where security matters.

Good lock but information lacking
4.0
July 29, 2025
Rural John Verified Purchase

Bought to replace a 76mm Chubb lock but the information on the website was insufficient to determine wjhether it would be a direct replacement. Having bought the lock I discovered that the position of the keyhole and the lock spindles were different and the receiver plate was also longer. Instead of a quick replacement it was a couple of hours work.

Solid easy replacement
5.0
July 11, 2025
FredTheTools Verified Purchase

Solid easy replacement. I've used Union locks before and the build quality is very good with clear fitting instructions.

Secure latch
5.0
March 5, 2025
Pocanat Verified Purchase

Solid 5 lever lock. Looks and feels secure. It does its job!

The 60mm is the depth. The latch is reversible.
5.0
February 21, 2025
Graeme3 Verified Purchase

Easy swap out old for new. The size is the depth.
Latch is reversible.

Easily exchanged for Era lock
5.0
January 22, 2025
B164D Verified Purchase

I'd bought a Union lock online to replace an Era one and of course it didn't fit so took it back. Staff in Livingston were efficient, polite and friendly, found me the correct Era lock and let me check it against the original before swopping it. The Era lock had been changed slightly since the original from 25 years ago but a little work with a chisel and hammer and it was fitted easily. The lock seems well made and operates easily. Very happy customer.

Good Lock.
5.0
December 14, 2024
Thinpipe Grin Verified Purchase

Good mid-priced lock, easy to fit as a replacement for a non BS lock. Keeps the Insurance Co happy.

EASY FIT, heavy duty lock
5.0
November 23, 2024
Keith Acoustic Verified Purchase

Heavy duty and easy to fit lock, great instructions in English

Very good
5.0
September 23, 2024
Scrumv Verified Purchase

Overall its a good price and good quality product.

Door lock
5.0
September 7, 2024
Silassss Verified Purchase

Replaced old worn out lock with new one. Competitively priced.

Good quality 5 lever lock with clear instructions and template
5.0
May 30, 2024
PaulH21 Verified Purchase

Used to replace a shed 3 lever lock which was not to British Standard. The instructions and template very helpful.

Good quality lock
5.0
May 28, 2024
GarLew Verified Purchase

As expected, worked perfectly. Only 2 keys tho, but good quality, & insurance rated

No need to look elsewhere.
5.0
May 6, 2024
Paul_K Verified Purchase

Not my first Union mortice purchase. Well made, strong, reliable and reasonably priced. Would buy again.

Solid lock
5.0
March 11, 2024
Ducdave Verified Purchase

A very good quality product, really liked the easily reversible tang on the latch, and the lock was pretty much a straight swap for the existing, where the keep wasn't but it was much more robust than the previous one.
Will buy again when i need another lock.

Easy replacement
5.0
November 13, 2023
Gavin MS Verified Purchase

Excellent replacement lock. Easily fitted. Union are well respected lock manufacturer, which gives confidence in the purchase and long term usage.

good product
5.0
October 8, 2023
jjt Verified Purchase

good product but returned for refund as wasnt the item i needed. good service on the refund by toolstation though

Replacement 5 Lee Mortice Lock
5.0
October 6, 2023
P66 Verified Purchase

2nd purchase of the Union 5 Lever Mortice Lock to replace existing in which the lever mechanism was constantly sticking in body or in locked position & very frustrating! Complete with all fittings. Same size so easy fit. Works great, quality product lock works well. Definitely suggesting my brother in law replaces his too as he has same problem!

Nice smart locks
5.0
May 7, 2023
Monkey patata Verified Purchase

I’m no locksmith, only fit locks infrequently, had 4 of these to do on a project if you’ve a good flat bit (DO NOT go cheap here!) sharp chisels and a router/hinge cutter..it seems relatively straight forward, I’m happy with the results. I didn’t see the point going for un rated 5 levers when these a just a few quid more. Action seems very smooth and nice to have a Union product.

Ok but
4.0
April 16, 2023
jpc9211 Verified Purchase

Decent lock but replacing a 10 year old union lock and the screw holes are totally different.

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