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Discount code JAN26
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Code: JAN26
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Rated Excellent

ERA 361 Fortress - BS 5 Lever Deadlock (76mm, Satin Chrome)

ERA 361 Fortress - BS 5 Lever Deadlock (76mm, Satin Chrome)
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£20.29
Customer Reviews
Rated 5.0

/5

Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
2 Reviews

100%

Recommended
this Product
Ease of Use
Out of 5
5
Build Quality
Out of 5
5
Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
Tom Verified Customer

This is a great product and ticks all the boxes I needed it for. It was very easy to fit and the security level it gives is very reassuring. I would recommend this lock to anyone wanting to replace a 5 lever mortise as this lock is definitely up to the job. Value for money is outstanding from Safe, and this lock costs over twice as much from other suppliers. I will definitely be using Safe again when the need arises for purchasing other locks. Delivery was prompt and was notifies of all updates untill it arrived. Fantastic lock, from a fantastic supplier!

Read more
Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
Roger Verified Customer

Locks were perfect and fitted well. The service was great as they made sure to ring and check my order was correct as I had requested keyed alike.

Read more

See all reviews

Discount code JAN26
5% Off Everything
Code: JAN26
View Full Specification
  • Locked by Key on either side.
  • Also available Keyed Alike.
  • Keyhole is 56mm backset from forend.
  • 76mm deep case.
  • 23mm bolt projection.
MPN: 361 51

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Details
A 76mm
B 56mm
C 89mm
D 134mm
E 26mm
Dimensions
Case Depth 76mm
Backset 56mm
Case Height 89mm
Forend Length 134mm
Forend Width 26mm
Show Imperial »
Lock
Manufacturer Part Number
361 51
Mortice Type
Deadlock
Lock Mechanism
5 Lever
Key Differs
1,000
Bolt Projection
23mm
Backset (keyhole)
56mm
Colour
Satin Chrome
Product File
Download
Features
Insurance Approved*
BS3621: 2007
Handed
Left, Right
Rebated
No
Keyed Alike
Available
* Insurance approval may vary due to conditions and location. Please check with your underwriter.
In The Box
Lock Case
Yes
Strike Plate
Yes
Keys
2
Escutcheons
Yes
Reviews [2]
Rated 5

/5

Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
2 Reviews

100%

Recommended
this Product
Ease of Use
Out of 5
5
Build Quality
Out of 5
5
Sort by:
Tom Verified Customer October 2018
Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
Recommended

This is a great product and ticks all the boxes I needed it for. It was very easy to fit and the security level it gives is very reassuring. I would recommend this lock to anyone wanting to replace a 5 lever mortise as this lock is definitely up to the job. Value for money is outstanding from Safe, and this lock costs over twice as much from other suppliers. I will definitely be using Safe again when the need arises for purchasing other locks. Delivery was prompt and was notifies of all updates untill it arrived. Fantastic lock, from a fantastic supplier!

Was this helpful? 10

Roger Verified Customer September 2025
Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
Recommended

Locks were perfect and fitted well. The service was great as they made sure to ring and check my order was correct as I had requested keyed alike.

Was this helpful?  

Roger Verified Customer September 2025
Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
Recommended

Locks were perfect and fitted well. The service was great as they made sure to ring and check my order was correct as I had requested keyed alike.

Was this helpful?  

Tom Verified Customer October 2018
Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
Recommended

This is a great product and ticks all the boxes I needed it for. It was very easy to fit and the security level it gives is very reassuring. I would recommend this lock to anyone wanting to replace a 5 lever mortise as this lock is definitely up to the job. Value for money is outstanding from Safe, and this lock costs over twice as much from other suppliers. I will definitely be using Safe again when the need arises for purchasing other locks. Delivery was prompt and was notifies of all updates untill it arrived. Fantastic lock, from a fantastic supplier!

Was this helpful? 10

Accessories

Add at Checkout

Thumbnail of Asec Spare Key

Spare Key

Keys are of course included, but we can cut you a spare.
Please allow 4 additional days for delivery.
£7.20
Delivery

Select during checkout


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Royal Mail 48 Our standard Royal Mail 48-hour service Includes a text confirming a 1 hour delivery time slot. Includes a text confirming a 1 hour delivery time slot.
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Scottish Islands Delivery Includes doorstep drop off deliveries to the following Scottish Island post codes, no steps: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
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Tail Lift Delivery Options
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Delivery & Install Options
Read more about delivery on our Delivery & Installation Guide and FAQ
All prices shown are inc. VAT.
Returns

Returns

Replacements
If you are not completely satisfied with your purchase, simply complete our returns form within 14 days of receiving your order. Goods must be returned within 30 days of the delivery date, in their original condition and packaging.
More information about returns
FAQs [1]

FAQs (1)

» Ask Question   

 
We already have a number of locks with an F marked on the key. Can you supply a lock for these keys?
Iain Revell, Wallingford
It is possible to order locks that suit your existing keys. However, you will physically need to supply your key, rather than providing a key number, in order for the lock to be modified. Please call the phone number at the top of the website if you would like us to organise this for you.
Jonathan P
Was this helpful? 86
All questions are answered by our own expert advisors.
Help & Advice

Useful Videos

How to fit a Mortice Deadlock How to replace a Mortice Deadlock

Related Blog Articles

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Product File

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Pay 20th Feb £20.29
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The Safe Shop Ltd., 1 Strand Street West, Preston, Lancashire PR2 2NS

Keyed Alike

Keying Options

Keyed to Differ or Keyed Alike locks?

As standard the ERA 361 Fortress - BS 5 Lever Deadlock (76mm, Satin Chrome) is supplied Keyed to Differ which means the lock includes a set of keys that are unique and will only open this lock. If you require multiple locks you can choose to have them all Keyed Alike, meaning that each lock can be opened using the same key.

What is Keyed to Differ?

  • Keyed to Differ is the standard way a lock is supplied.
  • Each lock is opened by its own unique key.
  • Each lock includes a unique set of keys.
  • Covered by our returns policy.

What is Keyed Alike?

  • Each key can open multiple locks - the same key could unlock your house and office.
  • Locks need to be the same brand and number of levers.
  • Keyed Alike locks include one set of keys regardless of how many locks are purchased.
  • Made to order so NOT covered by our returns policy.
  • It is possible to order this lock Keyed Alike here

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