Auto Deadbolt Nightlatch

Regular price
£213.83 ex VAT

Free UK delivery


High-security, self deadbolting nightlatch.  Heavy-duty, drill-resistant lock case morticed into the door for enhanced security and sleek design. Can be keyed alike to other Finfort locks. 

  • 21mm auto deadbolt 
  • British Standard BS8621: thumbturn inside for easy exit
  • 3 Star kitemarked cylinder with 3 keys
  • Registered keys - cannot be copied without permission
  • Snib button to temporarily disable deadbolt
  • 10 year warranty
  • For more, see FAQ, view GALLERY, watch VIDEO  or read REVIEWS
  • Click here to add EXTRA KEYS to your cart
  • Product includes:
    1. 1 x BS8621 automatic deadbolt nightlatch lock
    2. 1 x FinBolt striker plate
    3. 1 x set of small security lockguards
    4. 1 x door pull
    5. 1 x TS2007 3 star thumbturn cylinder
    6. 3 x registered keys
  • Simple security upgrade – An auto-deadbolt nightlatch works seamlessly with your existing insurance BS3621 compliant locks, automatically locking without turning a key.
  • Easy exit assured – TS2007 3 star thumbturn cylinder from ABS Avocet so you can always exit quickly in case of emergency. They are designed to resist attack by snapping, picking, drilling and bumping.  They are British Kitemarked and Secure by Design Accredited. 


  • Registered keys offer the highest security – keys cannot be copied without permission. Additional keys can be ordered online by key card holders only.
  • Built and tested to British standards – BS8621 certified including a 21mm steel bolt that can withstand 10kn of force and a hardened steel lock case that can withstand 5 minutes of constant drilling.
  • Reliable long life assured – Lock has been tested 200,000 times (that’s about 20 years of use for an average house) to achieve its EN12209 certification and why we guarantee the lock for 10 years.
  • Award-winning design – Awarded ‘Best Product’ by the Master Locksmith Association in 2019 and won a prestigious SBID design award in 2021.
  • Heavy duty lockguards – adding extra protection to the cylinders against tampering and act as a visual deterrent to a burglar.
  • Sleek & elegant design – embedded into the door. Elegant door furniture suitable to period or modern doors.
  • Deadbolt disabler for your convenience – built-in snib button to temporarily disable your deadbolt, handy for loading and unloading the car, for example.

Our Promise To You


Automatically Locks

Automatically deadbolts when the door is closed keeping your home safer

Registered Keys

Secure key registration so keys can never be copied without your permission
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Tested to BS8621

Expertly crafted & tested 200,000 times for durability and to resist burglar attack

Award-winning design

The Master Locksmith Association’s ‘Best Product’ in 2019

Made in the UK

Using the best of British design & engineering

High security no longer means clunky or ugly.

The compact FinBolt lock comes in standard sizes to fit the vast majority of wooden doors.

The FinBolt has sleek & elegant lockguards that suit both period and modern wooden doors.