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Home > ADVICE AND TIPS (FAQS) > What is Most Secure Lock To Prevent Lock Snapping? (2024 Guide)
The security issue of lock snapping is a growing security concern, we will look at the 3 best ways to prevent lock snapping & how to find the best anti-snap lock for your front & back door in 2024.
As experts in door and lock security, ourselves at the Master Locksmiths Association will help guide you through what rating your euro cylinder lock should have, for it to truly be anti-snap.
If you are looking to replace your locks with anti-snap locks then using one of the below three methods will help stop thieves snapping your locks.
Or you want to save time quickly contact an MLA approved locksmith local to you for expert advice.
Anti-snap locks are high security euro lock cylinders that are designed and tested to protect against lock snapping stopping a thief from breaking the lock into two parts. This type of cylinder is usually found on uPVC doors.
You may find people refer to Anti-Snap locks as ‘Snapsafe Locks’ as well.
In order to ensure the highest level of security against lock snapping, they should be tested against and approved to certain standards.
Read our ‘What is Lock Snapping’ Guide
The two most popular rating standards for a lock to be considered “anti-snap” (as some may say) are SS312 Diamond and TS007 3 Star. ( both covered further on )
As well the standard front door on your home, anti snap locks can also be installed on other types of doors such as:
Anti Snap locks can also protect against the recent blowtorch technique crime where thieves use a blowtorch to melt the door exposing the lock, once exposed they snap the lock.
A thief will not be able to gain entry by snapping a lock that is approved to one of the below standards.
There are many different types of lock cylinders available, most people are now asking which lock on their front & back door is the most secure and highest level of protection against lock snapping.
We believe that you can minimise your risk of being a victim of lock snapping by ensuring the lock you purchase has the Sold Secure ( SS312 ) Diamond Standard Approval.
SS312 Diamond was the first test standard developed to counter lock snapping and is deemed to be the highest level of approval for cylinders.
An example of SS312 Diamond Approved Euro Lock Cylinder from Avocet Hardware Ltd
Brisant Ultion is a SS312 Diamond Approved Cylinder
As of 2024, there are currently over 20 different lock cylinders what are Sold Secure Diamond Approved from manufacturers such as ABUS, APECS, Avocet, Brisant, ERA, Mul-T-Lock, Federal & Yale – some names are below:
For a official list of all current lock cylinders that are SS312 Diamond Approved please visit the Sold Secure website.
The below gallery shows an example of some SS312 diamond approved euro cylinders.
The next standard to look out for when looking for anti-snap protection is a TS007 3 Star kitemark standard lock:
An alternative specification to look out for is the TS007 BSI Kitemark, however, it is important to note that there is a star rating associated with this.
TS007 has 3 levels associated with it:-
The minimum criteria for protecting against lock snapping is to achieve at least 3 stars
If going for a TS007 approved product then make sure it has the Kitemark.
A Kitemark indicates the product has been tested by a 3rd party and hasn’t simply been approved to the standard by the manufacturer themselves
To protect against lock snapping a 3-star rating needs to be reached.
Look for the 3-star Kitemark standard to prevent lock snapping
To achieve this, you can use a 3-star euro lock cylinder.
ASEC lock cylinder is an example of a 3-star kitemark rated euro cylinder that helps prevent lock snapping
Expert Tip: We recommend that a 3rd party approval of this standard is sought.
An alternative to the 3-star euro cylinder option is to have a 1-star euro lock cylinder protected by 2-star approved door furniture, such as security handles or a cylinder guard ( escutcheon ).
2-star kitemark door furniture with 1-star kitemark lock cylinder will prevent against Lock Snapping
A 1-star kitemark lock cylinder with 2-star kitemark door furniture will prevent against Lock Snapping
Expert Tip: The complexity of these standards is why you should seek specialist advice from your nearest local MLA approved locksmith
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for expert advice on Anti-Snap locks
The cost of a euro cylinder lock that is anti snap without labour will cost from £60 compared to just £25 for a budget euro cylinder that is NOT anti snap. The price of the lock will again depend on the brand and security standard.
The estimated price to change your locks to an anti-snap euro cylinder could be from £130. The cost depends on the brand of lock cylinder that is being fitted along with where you are based, how far the locksmith has to travel & time of day.
Read our ‘Locksmith Pricing’ Guide – for more help on costs, we also wrote a price checklist.
No anti bump is NOT the same as anti snap, both are different techniques. Anti-bump which stops lock bumping is a manipulation technique that requires a specialist tool, whereas anti snap protects lock snapping which is physically breaking a lock.
Most ‘Anti-Snap’ locks are designed to snap and then lock up so that entry cannot be gained. However, this is only the case if your euro lock cylinder is approved to either SS312 diamond or TS 007 3 Star.
The difference between a TS007 3 Star and SS312 diamond lock cylinder is in how the cylinders are tested to pass the required standard.
Time and Tools used differ – SS312 Diamond uses a much heavier tool list to attack the cylinders although the time allowed is slightly shorter.
The general consensus, backed up by knowledge of cylinders that have passed one test and failed another, is that SS312 Diamond is a more difficult test standard to pass.
No, a 1-Star Lock is NOT Anti Snap when fitted to a door by itself.
A 1-Star Lock is ONLY Anti-Snap if fitted WITH a 2-Star Door Furniture such as Handle or Escutcheon.
A 1 Star euro lock cylinder is British Kitemark certified to 1 star. This means the lock should protect against drilling, bumping & picking. A 1 star lock would not protect against lock snapping and should be supported by a 2 star handle or escutcheon.
Note: There is no such thing as a 1 star lock as the star rating only applies to euro lock cylinders.
A TS007 three star lock usually means a Euro cylinder that has been subjected to an attack test in addition to the testing performed on a one star cylinder. 3 star lock cylinders resist direct attack & offer a significant security upgrade to any door regardless of the material of door and handle.
The Police will recommend both SS312 Diamond locks or TS 007 3 star locks to the general public as security upgrades for domestic homes.
SS312 Diamond standard euro cylinders have also been subject to a similar test as 3 star locks, SS312 is generally accepted as a higher level of testing & therefore offers similar if not better protection.
We found that lock snapping has been on the decline since 2011 which seems to tie in with anti-snap locks and the introduction of SS312 diamond cylinder locks that are designed to protect against lock snapping.
Many locks claim to be high security but the only way to check that something has met a minimum security requirement is to look for lock certification.
Locks certified to either British Standard Kitemark or Sold Secure approval will ensure a high security lock.
The 3 best ways to upgrade the security of your home to protect against lock snapping.
Make sure the anti snap locks you fit meet one of the below 3 standards:
Above all make sure you use a locksmith to fit your locks, fitting incorrectly can leave your locks prone to snapping.
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