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skip to Yale 91 Nightlatch - 60mm - Fire Modified

Yale 91 Nightlatch - 60mm - Fire Modified

£43.19

(£35.99 ex VAT)

sku: L147
  • Fire-modified internal mechanism prevents deadlocking to ensure safe emergency egress at all times.
  • External entry is permanently accessible via key for authorised access.
  • Reversible latchbolt allows for installation on both left and right-handed timber doors.
  • Integrated snib function enables the bolt to be held in the retracted position for free passage.
  • Designed for use on timber doors with a thickness between 32mm and 57mm.
  • Operates via a reliable 5-pin rim cylinder mechanism for external security.
  • Suitable for residential and commercial applications requiring clear exit routes.
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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 Yale 91 Nightlatch is a surface-mounted rim lock specifically engineered for applications where fire safety and emergency egress are priorities. Unlike standard nightlatches, this fire-modified version is designed so that the internal handle cannot be deadlocked. This ensures that the door can always be opened from the inside for exit, making it an ideal choice for communal entrances, flats, and commercial properties.

This lock is designed for timber doors and features a reversible latchbolt, allowing it to be fitted to both left and right-handed inward-opening doors. For outward-opening door configurations, a separate reverse strike can be utilised. It is compatible with door thicknesses ranging from 32mm to 57mm, providing a versatile solution for both replacement and new-build installations.

Functionality includes a manual slide button on the internal case, which allows the user to hold the bolt in the withdrawn position. This is particularly useful for periods of high traffic where restricted access is not required. External access is maintained via a standard 5-pin rim cylinder, ensuring the property remains secure while remaining accessible to key holders.

Dimensions Image: Yale 91 Nightlatch - 60mm - Fire Modified
Dimensions Image: Yale 91 Nightlatch - 60mm - Fire Modified

Brand

SKU

L147

Box Contents

2 keys

strike plate

fixing screws

instructions

cylinder screw

rim cylinder

nightlatch

rosette

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.

No, this fire-modified model is specifically designed so it cannot be deadlocked from the inside. This ensures that entry can always be gained from the outside using a key, which is often a requirement for safety and access protocols.

While configured for standard doors, the latchbolt is easily reversible on site. For doors that open outwards, reverse strikes are available to ensure a proper and secure fit.

The Yale 91 Nightlatch is designed for use on standard timber doors with a thickness ranging from 32mm to 57mm.

Yes, the unit features an internal slide button that allows you to hold the latchbolt back. This is useful for keeping the door unlocked when frequent access is required without using a key.

Related Products

skip to Extra Key for Yale Rim Locks

Extra Key for Yale Rim Locks

£4.20

(£3.50 ex VAT)

sku: EXK
  • Precision-cut to match specific Yale rim cylinder profiles
  • Compatible with standard Yale nightlatches and rim locks
  • Ideal for providing additional access to residents or staff
  • Ensures smooth mechanical operation within the cylinder barrel
  • Suitable for both domestic and light commercial applications
  • Provides a direct replacement for lost or damaged original keys
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 Yale Rim Lock Extra Key is a precision-machined mechanical key designed specifically for use with standard Yale rim cylinders. These cylinders are the primary locking component found in traditional nightlatches used on timber entrance doors. Cutting extra keys to the correct profile is essential for property management, shared occupancy, or simply ensuring a spare is available in case of an emergency.

Each key is manufactured to match the specific internal pin configuration of the cylinder it is intended for. This ensures reliable engagement of the locking bolt and reduces friction during rotation, which helps to extend the lifespan of the lock's internal mechanism. These keys are intended for use as duplicates or replacements when the original set is insufficient or has been lost.

  • Application: Primarily used for front door nightlatches and secondary rim locking systems.
  • Compatibility: Designed for use with all standard Yale-branded rim cylinders.
  • Function: Operates the cylinder from the external side of the door to retract the latch or engage the deadbolt.

When providing additional keys for a security system, using precision-cut blanks is vital to maintain the security integrity of the door. These keys provide a functional and cost-effective alternative to replacing the entire cylinder unit when additional access points are required for a property.

Brand

SKU

EXK

Box Contents

1 key

skip to Suitable Size Chisels to fit Nightlatch Locks

Suitable Size Chisels to fit Nightlatch Locks

£9.00

(£7.50 ex VAT)

sku: NightChis
  • Bevelled edge design allows for precision cutting in tight corners and rebates
  • Hardened and tempered steel blades for long-lasting edge retention
  • Impact-resistant handles designed to withstand regular use with wooden mallets
  • Specifically curated for the installation of nightlatch locks and keeps
  • Precision ground blades ensure smooth and accurate wood removal
  • Ergonomic grip design for comfort and control during prolonged use
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 Faithfull Bevel Edge Wood Chisel Set is an essential collection of tools specifically selected for the installation of nightlatch locks on timber doors. These chisels are engineered to provide the accuracy required for creating clean recesses and rebates, ensuring a professional and secure fit for door hardware.

Each chisel features a high-quality steel blade that has been hardened and tempered to maintain a sharp edge through repeated use. The bevelled edges make these tools particularly effective for working into internal corners and tight spaces, which is critical when fitting lock keeps and housings. The impact-resistant handles are designed for durability, allowing them to be used safely with a mallet for deeper cuts.

Applications and Use:

  • Fitting and recessing nightlatch locks on wooden doors
  • Preparing door frames for lock keeps and striking plates
  • General joinery and woodworking tasks requiring precision rebates
  • Suitable for both initial installations and replacement hardware projects

Whether you are a professional tradesperson or a DIY enthusiast, this set provides the necessary tools to achieve a flush finish when mounting security hardware to timber surfaces.

Brand

SKU

NightChis

Box Contents

1 x Faithful 25mm Chisel

skip to Suitable Size Drill Bits to fit Nightlatches

Suitable Size Drill Bits to fit Nightlatches

£8.39

(£6.99 ex VAT)

sku: NightDrill
  • Designed for boring timber doors during nightlatch installation
  • Includes a flat spade bit for cylinder aperture creation
  • Secondary twist drill bit provided for pilot holes and fixings
  • 1/4 inch hex shank ensures compatibility with quick-change chucks
  • Precision-ground cutting spurs for reduced splintering on breakthrough
  • Hardened steel construction for use with softwoods and hardwoods
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 Black & Decker Drill Bit Set is specifically curated for the installation of nightlatches on wooden doors. It provides the essential boring tools required to prepare a door for standard cylinder rim locks, ensuring a clean and accurate fit.

The kit comprises a flat spade bit and a smaller twist drill bit. The spade bit is used to create the large diameter hole necessary for the lock cylinder to pass through the door leaf. Its central point allows for precise alignment with marked measurements, while the outer spurs cut the wood fibres cleanly to prevent breakout on the reverse side of the door.

The accompanying twist drill is used for drilling pilot holes for the mounting screws and the internal cylinder tailpiece. This prevents the timber from splitting during the final assembly of the lock hardware. Both components are manufactured from hardened steel to maintain sharpness across multiple installations in various timber densities.

  • Compatible with standard power drills and impact drivers
  • Suitable for new door installations and replacement upgrades
  • Ideal for use with most standard UK rim cylinder nightlatches

Brand

SKU

NightDrill

Box Contents

1 x Black and Decker 32mm Flat wood bit (for main cylinder hole)

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