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skip to ERA BS3621:2007 High Security Nightlatch - 1830 - 40mm

ERA BS3621:2007 High Security Nightlatch - 1830 - 40mm

£51.59

(£42.99 ex VAT)

sku: ERA1830
  • Conforms to British Standard BS3621:2007 for insurance compliance
  • Automatic deadlocking action prevents forced entry via shimming
  • Internal lockable handle provides additional security for glass panelled doors
  • Integral cylinder pull protects the external cylinder against drilling attacks
  • Long 20mm bolt throw ensures increased strength and staple engagement
  • Integral snib allows the bolt to be held in the withdrawn position
  • Supplied with high-security cylinder featuring over 30,000 key variations
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Finish

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.

star Recommended
heavy-duty Heavy Duty
9/10 Security Rating
british-standard British Standard - BS3621
tick Key Profile: Standard

The ERA BS3621:2007 High Security Nightlatch is a specialist rim-mounted lock designed to provide superior protection for external timber doors. Meeting the rigorous criteria of British Standard BS3621:2007, this nightlatch is widely recognised by insurance providers and the police as an approved security solution for residential properties.

Engineered with technical security at its core, the lock features an automatic deadlocking mechanism. Once the door is closed, the bolt is locked in position, preventing unauthorized entry via "shimming" or forced manipulation of the latch. The extended 20mm bolt throw provides a deep, secure engagement with the box staple for enhanced resistance against physical force.

This model is particularly effective for doors with glass panels, as the internal handle can be locked from the inside with a key. This prevents an intruder from smashing the glass to operate the handle. Additional protection is provided by the integral cylinder pull, which reinforces the external cylinder against drilling and extraction attempts. It is an ideal choice for both replacement upgrades and new installations on solid or glazed timber doors.

Dimensions Image: ERA BS3621:2007 High Security Nightlatch - 1830 - 40mm
Dimensions Image: ERA BS3621:2007 High Security Nightlatch - 1830 - 40mm

Brand

SKU

ERA1830

Box Contents

3 keys

strike plate

fixing screws

instructions

rim cylinder

nightlatch

Certifications

british-standard British Standard - BS3621

Key Profile

Key Profile: Standard

FAQs

No unfortunately not, the BS3621 nightlatches can not be reversed. The only way to do this is to install a standard nightlatch from our outward opening nightlatch section and then also install a BS3621 deadlock. This deadlock will give you the insurance rating required.

You need to make sure the lock you fit is NON deadlocking. This means that you can not lock people into the property. There are a few nightlatches designed for these doors. The best is the Yale PBS3 or PBS4 or a more standard model would be the Yale 88 or 84.

The best locks for these would be the a rollerbolt style lock with a masterkeyed cylinder. I would not recommend installing a standard Nightlatch on these doors as the tenants can lock themselves out if they close the door behind them. We can supply these locks for you on a masterkey if you require or keyed differ if you would prefer.

The backset on these locks is the distance from the edge of the door to the center of the Rim Cylinder. This is the large 32mm hole drilled through the door. There are 2 main sizes of these, 60mm or 40mm. Easiest way to find out what you have is to measure from outside of the door from the edge to the center of the keyhole. If you have a solid door you should use the 60mm backset locks, if you have a glass panelled door then you may need to use the 40mm backset. If your current lock is 50mm backset you will need to see our Union locks as only Union made a 50mm backset lock in the past.

There are different levels of security you can have with all locks. The standard locks (i.e. Yale 77, Yale 88) , then the mid level locks which can be key deadlocked from outside ( Yale 89, Union nightlatches). The double locking versions are only suitable for homes with other means of exit as you can lock people inside the house if not careful.

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

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, this ERA nightlatch conforms to BS3621:2007 (BS EN 12209). It meets the rigorous security criteria required by most insurance companies and is recommended by the police for use on external timber doors.

This model features an internal handle that can be locked with a key. This is a vital security feature for glass-paneled doors because it prevents an intruder from smashing the glass and reaching inside to manually turn the handle and unlock the door.

Once the door is closed, the main bolt automatically deadlocks. This prevents shimming or loiding, a common forced-entry technique where a credit card or similar flat tool is used to push back a standard latch.

Yes, this nightlatch includes a snib feature. This allows you to hold the bolt in the withdrawn position, preventing the door from locking automatically. This is ideal for short periods when you need to move in and out of the house freely.

Related Products

skip to High Security Deadlock Kit with Matching Key to ERA Nightlatch

High Security Deadlock Kit with Matching Key to ERA Nightlatch

£65.99

(£54.99 ex VAT)

sku: EraDCase
  • Designed for single-key operation when paired with compatible ERA nightlatches
  • Includes a robust euro-profile deadcase for secondary door security
  • Supplied with security escutcheons to protect the cylinder from physical attack
  • Provides an additional locking point to enhance external door resistance
  • Ideal for maintaining insurance compliance when used with a BS3621 primary lock
  • Compatible with standard timber door preparations for straightforward installation

Cylinder Type

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.

star Recommended
9/10 Security Rating

The ERA High Security Deadlock Kit is a comprehensive locking solution designed to provide additional security for external timber doors. This kit is specifically engineered to be keyed alike with ERA BS3621 nightlatches, allowing for the convenience of operating both the primary and secondary locks with a single key without compromising the security of the property.

While the deadlock itself is a secondary security measure, it plays a vital role in a dual-locking system. When installed alongside an insurance-rated nightlatch, it ensures the door is secured at two distinct points, significantly increasing resistance to forced entry. The kit includes security escutcheons which are essential for protecting the cylinder against common attack methods such as drilling and snapping.

Typical applications include residential front and back doors where increased physical security is required. This kit is suitable for both new door installations and as an upgrade to existing security setups. It is recommended for use where a unified keying system is preferred to reduce the number of keys required for home access.

  • Function: Secondary deadlock for enhanced physical security.
  • Compatibility: Designed to match existing ERA keying systems.
  • System Role: Functions as a supplementary lock alongside a primary BS3621 nightlatch.
  • Components: Contains a euro deadcase, security escutcheons, and a double cylinder.

Brand

SKU

EraDCase

Box Contents

keys

strike plate

fixing screws

mortice lock

security escutcheons

euro cylinder

skip to Extra Key for Supplied ERA 1830 and 1930 Nightlatches

Extra Key for Supplied ERA 1830 and 1930 Nightlatches

£3.60

(£3.00 ex VAT)

sku: ERA-EXK2
  • Specifically designed for compatibility with ERA 1830 and 1930 series nightlatches
  • Precision-cut profile ensures smooth operation within the cylinder mechanism
  • Provides a direct replacement or additional spare key for existing lock sets
  • Manufactured for durability to withstand frequent daily use
  • Suitable for residential applications requiring multiple user access
  • Compatible with standard rim cylinders provided with these specific models
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 replacement key is specifically engineered for use with the ERA 1830 and 1930 nightlatch series. It functions as a precision-manufactured component designed to operate the standard rim cylinders typically supplied with these front door security locks.

Typical applications include providing additional access for new residents, housekeepers, or as a precautionary spare in case of loss. Because these keys are manufactured to the original brand specifications, they ensure seamless compatibility and prevent the mechanical wear often associated with generic duplicates.

  • Designed for use with ERA traditional nightlatch cylinders
  • Ideal for both new installations requiring extra keys and maintenance of existing locks
  • Ensures reliable engagement with the internal pin tumblers for consistent security performance

Brand

SKU

ERA-EXK2

Box Contents

1 key