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skip to ERA Fortress Mortice DeadLock (BS3621:2007)

ERA Fortress Mortice DeadLock (BS3621:2007)

£17.88

(£14.90 ex VAT)

sku: ERA261-361

This High Security Mortice Lock is manufactured to British Standard BS3621:2007, meeting the exacting demands of the insurance companies and the Police. Higher security levels are delivered by a 20mm bolt throw on every lock, which has hardened steel plates to resist drilling, and four hardened steel rollers in the deadbolt to resist hacksawing.

The keys, manufactured of manganese bronze, have 1,000 variations for added security. All steel levers have false notching to resist lock picking.

Supplied with matching escutcheons.

Mechanism : 5 Lever
Security Level: British Standard - BS3621:2007
Case Size : 67mm or 79mm
Case Finish : Powder Coated
Forend Finish : Polished Brass, Satin Chrome or Polished Chrome
Keys Supplied : 2
Differs : 1000

Era Fortress BS3621 Range of mortice locks which can be keyed alike together

ERA Fortress Mortice DeadLock (BS3621:2007) £ 17.88
ERA Fortress Mortice SashLock (BS3621:2007) £ 19.08

Finish

Size

Key Configuration

Keys Supplied: per lock ( total) total (unless ordering multiple groups)
Additional Keys are available below
Qty:

Shipping From:

When ordering multiple Keyed Alike locks, only 1 set of keys are provided as all additional locks are made to work from that key.

If ordering 4 or more keyed alike locks you can have them set up as different groups. If Required: Let us know the details in the "Specific Key Requirements" field above.

Each group of locks will then receive keys.

9/10 Security Rating
british-standard British Standard - BS3621
tick Key Profile: Standard
Dimensions Image: ERA Fortress Mortice DeadLock (BS3621:2007)
Part Min (mm) Max (mm)
Backset 44 56
Bolt Length 23 -
Case Width 67 79
Case Height 89 -
Forend Width 26 -
Forend Length 134 -
Strike Plate Width 30 -
Strike Plate Length 180 -
Dimensions Image: ERA Fortress Mortice DeadLock (BS3621:2007)

Brand

SKU

ERA261-361

Box Contents

2 keys

strike plate

fixing screws

instructions

mortice lock

key escutcheons

Certifications

british-standard British Standard - BS3621

Key Profile

Key Profile: Standard

FAQs

All the extra keys for the locks are cut to the specific locks that have been ordered.

There are 2 different sizes of lock cases as each lock will give you a different backset. This is the distance from the edge of the lock to the keyhole / spindle for handles. The bigger locks are better for solid wooden doors as they move the keyhole away from the door stop further. If you have a large door stop and fit a 64mm lock case you can find that you hit your knuckles on the door stop when you turn the key. Alternatively the 64mm lock case is better when you have a glass panelled door as you may not have enough wood on the stile to fit the 76mm lock into before you hit and therefore smash the glass. This is very important to check when installing locks to doors with glass in.

No, if the door is a communal entrance/ exit you MUST have a turn on the inside, so a 5 lever key on the inside is not suitable.

There are specific locks we sell called Egress locks that meet both the Insurance and Fire regulations so these are suitable for communal entrance doors.

To meet the fire regulations you need to be able to exit a communal door without the use of a key. If you are using the lock on your personal front door then they are fine but if others use the door you need to look into getting a turn knob internally so you can exit without the use of a key.

With outward opening doors you can not get a BS3621 outward opening nightlatch (see our section for all the options we have available) but if you install a standard security nightlatch you can also fit a BS3621 deadlock to the door which will give you the insurance rated lock required. As the deadlocks are not handed you can use them on any type of wooden door.

With most locks that are altered to make them keyed alike you will only get 1 x set of keys with them. So if the locks normally come with 2 you will only get 2 keys total and if they come with 3 keys you will only get 3 x keys total when ordered keyed alike.

Yes you can, we would need a key back as we dont hold any records of your keys but this is possible. Please get in touch first so we can confirm everything is ok to do and then you can post your key back to us (taped to a piece of card...essential!!)

Yes, this is possible but it is important to make sure you select the same brand and model. The internals and the keys need to match so we can key the locks alike.

We do try to list the products together in our series tab on the product page which should show the suitable products that can be keyed alike together.

If in doubt please ask us and we will let you know.

A rebate set is only required on double rebated doors. If you only have a single door then you will receive all the parts you require with the lock. If you need a rebate set you will need to check the size of your rebate. The most common is 13mm but on older doors they can be 19mm or 25mm.

With the 5 lever locks they are designed to be high security so there are thousands of different keys so the keys do not come with numbers on. Therefore we can not cut additional keys for these locks without a key to copy from. If you post it back to us we can do it for you (please contact us first before you send it) or alternatively nearly all the keys we sell are available from local locksmiths in your area. They maybe more expensive so we would recommend buying the extra keys at the time of purchase so we can cut and try them before we ship the order.

Deadlocks are suitable for either hand and inward and outward opening doors. The locks have keyholes either side and can be used on the left or right hand side of the door.

Yes, the ERA Fortress Deadlock is manufactured to British Standard BS3621:2007. This certification is the standard often required by insurance companies and the Police for external timber doors, ensuring it meets high-security performance levels.

This lock is designed to resist common forced entry methods with the following features:

  • Hardened steel plates to protect the internal mechanism against drilling.
  • Four hardened steel rollers inside the deadbolt to prevent it from being cut with a hacksaw.
  • A substantial 20mm bolt throw for deeper engagement into the door frame.

The case size refers to the total depth of the lock body. If you are replacing an existing lock, you should measure the total depth of the current lock case to match it. Generally, the 67mm case is suitable for doors with narrower stiles, while the 79mm case is standard for wider stiles.

Yes, each lock is supplied with the 5-lever mechanism, two manganese bronze keys, and matching escutcheons for a professional finish on both sides of the door. The keys offer 1,000 different variations for enhanced security against duplicate keys.

Related Products

skip to ERA 5 Lever Mortice Locks Extra Key

ERA 5 Lever Mortice Locks Extra Key

£3.60

(£3.00 ex VAT)

sku: 8796
  • Compatible with ERA 5-lever mortice lock ranges
  • Supplied pre-cut for immediate use with your specific lock
  • Precision machined for smooth operation within the lever mechanism
  • Allows for additional key holders without the need for locksmith visits
  • Ideal for residential and commercial door security setups
  • Manufactured to original equipment standards for long-term reliability

Keys Supplied: per lock ( total) total (unless ordering multiple groups)
Qty:

Shipping From:

When ordering multiple Keyed Alike locks, only 1 set of keys are provided as all additional locks are made to work from that key.

If ordering 4 or more keyed alike locks you can have them set up as different groups. If Required: Let us know the details in the "Specific Key Requirements" field above.

Each group of locks will then receive keys.

This ERA 5 Lever Mortice Lock Extra Key is a pre-cut accessory designed to work seamlessly with the ERA range of 5-lever security locks. These keys are specifically cut to match the internal lever configuration of your chosen lock unit, providing a reliable and durable solution for additional access requirements.

Typically used in both residential and commercial applications, extra keys are essential for multi-user households or shared premises. By ordering keys cut to the lock's specific code at the point of purchase, you ensure a higher level of precision compared to standard aftermarket duplicates, which helps to prevent unnecessary wear and tear on the lock's internal components.

  • Compatible with all standard ERA 5-lever mortice locks
  • Supplied as a finished, cut key ready for immediate use
  • Recommended for use when multiple spare sets are required for new lock installations
skip to ERA Intumescent Kit To Suit ERA Fortress BS Deadlock.

ERA Intumescent Kit To Suit ERA Fortress BS Deadlock.

£8.39

(£6.99 ex VAT)

sku: DANFDL1IK
  • Designed specifically for use with ERA Fortress BS Deadlocks
  • Expands under heat to maintain fire integrity of the door
  • Ensures compliance with fire safety regulations for timber doors
  • Pre-cut pieces for a precise fit around the lock case and strike
  • Low-profile material reduces the need for excessive timber removal
  • Provides a thermal barrier between hardware and door substrate
Qty:

Shipping From:

When ordering multiple Keyed Alike locks, only 1 set of keys are provided as all additional locks are made to work from that key.

If ordering 4 or more keyed alike locks you can have them set up as different groups. If Required: Let us know the details in the "Specific Key Requirements" field above.

Each group of locks will then receive keys.

The ERA Intumescent Kit is a specialist fire safety accessory designed to be used in conjunction with the ERA Fortress BS Deadlock range. This kit is essential when installing these mortice locks into fire-rated timber doors, providing the necessary protection to maintain the door's integrity during a fire.

Manufactured from high-performance intumescent material, the kit is designed to expand rapidly when exposed to heat. This expansion seals the voids created by the lock mortice, preventing the spread of flames and hot gases through the door assembly. Using a pre-cut kit ensures that the lock is fully protected without the need for manual cutting or shaping on-site, which improves installation speed and accuracy.

The kit is typically used in both new builds and refurbishment projects where fire safety standards must be met. It is compatible with 30-minute and 60-minute fire doors, depending on the door manufacturer's specific testing and certification. By isolating the metal hardware from the timber, it significantly reduces the risk of the door charring and failing prematurely at the lock position.

skip to Suitable Size Drill Bits to fit Mortice Locks

Suitable Size Drill Bits to fit Mortice Locks

£11.99

(£9.99 ex VAT)

sku: MortTool
  • Designed specifically for the installation of mortice locks in timber doors
  • Includes flat wood bits for rapid and efficient boring of the lock case cavity
  • Features a pilot drill bit to ensure accurate alignment before main drilling
  • Compatible with all standard power drill chucks and bit holders
  • Essential toolkit for ensuring a professional fit for sashlocks and deadlocks
  • Suitable for use on both internal and external wooden door types
Qty:

Shipping From:

When ordering multiple Keyed Alike locks, only 1 set of keys are provided as all additional locks are made to work from that key.

If ordering 4 or more keyed alike locks you can have them set up as different groups. If Required: Let us know the details in the "Specific Key Requirements" field above.

Each group of locks will then receive keys.

The Mortice Lock Drill Bit Kit is a specialised set of tooling designed to facilitate the precise installation of mortice sashlocks and deadlocks. By providing the essential drill bit diameters required for standard lock bodies, this kit ensures that the mortice cavity is bored to the correct depth and width with minimal effort.

The kit features flat wood bits which are ideal for the rapid removal of material from timber door stiles. These bits are designed to create clean, straight holes that accommodate the lock case without causing splitting. The inclusion of a pilot bit allows for accurate marking and initial drilling, which is critical for maintaining the structural integrity of the door and ensuring the lock operates correctly.

Commonly used by joiners and locksmiths, this kit is suitable for both new door installations and when upgrading existing hardware. It is compatible with most standard power drills, making it a versatile tool for residential or commercial door preparation.

Brand

SKU

MortTool

Box Contents

1 x Black and Decker 18mm Flat wood bit (for main mortice hole)

1 x Black and Decker 10mm Flat wood bit (for Key Holes)

2 x Black and Decker 2.5mm drill (for pilot holes)

skip to Suitable Size Chisels to fit Mortice Locks

Suitable Size Chisels to fit Mortice Locks

£17.99

(£14.99 ex VAT)

sku: MortChis

This Chisel set will contain 1 of each of the sizes you will need to fit a mortice lock to a wooden door

Kit includes:

1 x Faithful 19mm Chisel

1 x Faithful 25mm Chisel

The Faithfull bevel edged chisel range are quality tools for professional work as well as DIY users. The blue PVC handles on these chisels are impact resistant and designed for use with a mallet, or an occasional hammer blow.

Each blade is manufactured from drop-forged chrome vanadium steel and is hardened and tempered to exacting standards, ensuring that the cutting edge remains sharper for longer. The bevelled edges make these chisels ideal for fine work and for cutting into tight corners.

All the chisels in this range are supplied with blade guards.

Qty:

Shipping From:

When ordering multiple Keyed Alike locks, only 1 set of keys are provided as all additional locks are made to work from that key.

If ordering 4 or more keyed alike locks you can have them set up as different groups. If Required: Let us know the details in the "Specific Key Requirements" field above.

Each group of locks will then receive keys.

Brand

SKU

MortChis

Box Contents

19mm Chisel

25mm Chisel

Blade Guards

skip to Complete Set of 4 Chisels by Blue Spot

Complete Set of 4 Chisels by Blue Spot

£16.79

(£13.99 ex VAT)

sku: BLChisSet
  • Hardened steel blades for enhanced durability and edge retention
  • Precision ground edges for accurate paring and cutting
  • Ergonomic grooved handles for improved grip and control
  • Bevel edge design suitable for reaching into restricted areas
  • Integrated hanging holes for convenient tool storage
  • Designed for general-purpose woodworking and joinery tasks
Qty:

Shipping From:

When ordering multiple Keyed Alike locks, only 1 set of keys are provided as all additional locks are made to work from that key.

If ordering 4 or more keyed alike locks you can have them set up as different groups. If Required: Let us know the details in the "Specific Key Requirements" field above.

Each group of locks will then receive keys.

The Blue Spot 4 Piece Wood Chisel Set is designed for a variety of woodworking tasks, ranging from fine paring to general-purpose shaping. Each chisel features a blade manufactured from hardened steel, providing the necessary strength to withstand repeated impact and maintain a sharp cutting edge over time.

These chisels are equipped with precision ground blades, ensuring accuracy during intricate joinery work. The handles are constructed from a durable plastic with a textured, grooved finish to provide a secure and comfortable grip, reducing the risk of slipping during use. Each handle also includes a hanging hole for efficient workshop organisation.

This set is an essential addition to any toolbox for tasks such as creating recesses for hinges, cleaning out mortises, or paring down timber. The bevelled edges allow for better access when working in tight corners or narrow joints, making them suitable for both DIY enthusiasts and tradespeople alike.

Dimensions Image: Complete Set of 4 Chisels by Blue Spot

Brand

SKU

BLChisSet

Box Contents

1 x 6mm Chisel

1 x 12mm Chisel

1 x 19mm Chisel

1 x 25mm Chisel

skip to ERA Rebate for Fortress Deadlock

ERA Rebate for Fortress Deadlock

£23.99

(£19.99 ex VAT)

sku: 427-51
  • Specifically engineered for use with ERA Fortress deadlocks
  • Enables secure installation on rebated double timber doors
  • Adapts the lock mechanism to fit overlapping door stiles
  • Provides a professional finish for non-flush door meeting points
  • Supplied as a complete kit including all necessary fixings
  • Essential for maintaining security on external double door sets
  • Components match the lock's profile for a consistent appearance

Finish

Size

Keys Supplied: per lock ( total) total (unless ordering multiple groups)
Qty:

Shipping From:

When ordering multiple Keyed Alike locks, only 1 set of keys are provided as all additional locks are made to work from that key.

If ordering 4 or more keyed alike locks you can have them set up as different groups. If Required: Let us know the details in the "Specific Key Requirements" field above.

Each group of locks will then receive keys.

The ERA Fortress Rebate Set is an essential accessory designed specifically for use with the ERA Fortress range of mortice deadlocks. It is required when fitting a security deadlock to a pair of rebated double doors, where the door edges overlap rather than meeting flush.

This set functions by providing a stepped strike plate and forend cover that accommodate the rebate in the timber. Without a rebate set, a standard deadlock strike plate would not align correctly with the lock bolt on an overlapping door frame. It is suitable for both residential and commercial applications where double timber doors are installed.

  • Application: Used exclusively on rebated double door sets.
  • Compatibility: Fully compatible with ERA Fortress deadlock mechanisms.
  • Installation: Includes the rebated components and matching screws for a seamless fit.

Please note that this product is not required for standard single doors, as those locks are supplied with the necessary flat strike plates as standard. When upgrading or installing new locks on double doors, ensure the rebate size matches your door profile for optimal security and operation.

Brand

SKU

427-51

Box Contents

strike plate

fixing screws