Yale locks · explained · Manchester
"A Yale lock" is four different things.
Get a price in 2 minutes
Tell us what's happened. We ring you straight back with a fixed price.
- Repair £30-55
- BS3621 nightlatch £75-130
- 20-40 min
- All brands
When someone rings and says "it's a Yale lock", we still have to ask three questions. Yale is a company, not a lock type, and in Britain the word has drifted so far from the brand that half the Yale locks we're called to were made by somebody else entirely.
What people usually mean
Nine times out of ten: a rim nightlatch. The lock screwed onto the inside face of the front door, with a cylinder poking through to the outside and a latch that clicks shut behind you on its own.
Yale did not invent that by accident. Linus Yale Jr patented the pin tumbler cylinder in the 1860s, it went on nightlatches, the nightlatch went on every terraced house in the country, and the brand became the noun. Like Hoover.
The four things called Yale
| What they say | What it is |
|---|---|
| "The Yale on the front door" | Rim nightlatch. Any brand. Usually not Yale. |
| "A Yale key" | A pin tumbler key. Describes the shape, not the maker. |
| "A Yale mortice" | An actual Yale-branded lever mortice lock. |
| "A Yale smart lock" | The modern product range. Genuinely Yale. |
None of that is pedantry. It changes what we bring, so when you ring, describe the door rather than the brand: is it screwed to the inside face, or buried in the door edge?
The snib, and the mistake everybody makes
That little slider on the inside of the nightlatch does two things, and most people only know one.
- Up: holds the latch back, door won't lock. Bringing shopping in.
- Down: deadlocks the latch. Nobody opens it, even with the key from inside.
That second one matters. On a deadlocking nightlatch, turning the key from outside also deadlocks the latch, which stops the credit-card trick and stops an arm through a letterbox reaching the handle.
If you have a deadlocking nightlatch and you never use it, you own a security feature you have never switched on. Give the key an extra turn when you leave.
Why they stick
Nightlatches take more abuse than any other lock in the house because the door slams onto the latch several times a day for decades. The usual three:
Latch won't retract
Dirt and dried grease in the case. Strip and service, £30-55.
Latch misses the keep
Door dropped, or frame moved. Realignment, not a new lock.
Cylinder worn
Key needs jiggling. New rim cylinder, £30-55.
Yours is probably not BS3621
Most standard nightlatches are not, and your insurer probably wants it on the final exit door. BS3621 nightlatches do exist, at £75-130 fitted, but the ordinary one that came with the house almost certainly is not one. Check the faceplate for the Kitemark. See BS3621 explained and rim locks.
Questions people actually ask
What is a Yale lock, exactly?
Yale is a manufacturer, not a type of lock, but in Britain the word has come to mean a rim nightlatch: the lock screwed onto the inside face of a front door, with a cylinder through to the outside and a latch that clicks shut behind you. Most locks people call Yale were made by somebody else. Linus Yale Jr patented the pin tumbler cylinder in the 1860s, it ended up on nightlatches on every terraced street in the country, and the brand became the noun, like Hoover. When you ring us, describe the door rather than the brand: is the lock screwed to the inside face, or buried in the edge of the door?
What does the snib on my Yale lock actually do?
Two things, and most people only use one. Slide it up and it holds the latch back so the door will not lock, which is what you do when carrying shopping in. Slide it down and it deadlocks the latch, so nobody can open the door at all, even with a key from inside. On a deadlocking nightlatch, turning the key from outside does the same thing, and that is the bit worth knowing: deadlocking the latch defeats the credit card trick and stops an arm through the letterbox reaching the handle. If you have that feature and never use it, you own a security measure you have never switched on.
My Yale latch sticks and won't pull back. Repair or replace?
Repair first. A nightlatch takes more punishment than anything else in the house, because the door slams onto that latch several times a day for decades, and the usual cause of sticking is dried grease and dirt inside the case rather than a broken mechanism. A strip and service is £30 to £55 and takes half an hour. The other common cause is that the door has dropped and the latch is catching the edge of the keep rather than entering it, which is a realignment, not a lock fault. Buying a new lock fixes neither of those.
Does my Yale nightlatch meet my insurance requirements?
Probably not, and it is worth checking rather than assuming. Most standard nightlatches, including most Yale-branded ones, are not BS3621, and most home policies require BS3621 on the final exit door. BS3621 nightlatches do exist and cost £75 to £130 fitted, but the ordinary one that came with the house almost certainly is not one. Look at the faceplate on the edge of the door for the Kitemark and the words BS3621. If they are not stamped there, it is not, and a second BS3621 mortice deadlock is often the cheaper way to comply.
Can I change just the cylinder on a Yale nightlatch?
Usually yes, and it is much cheaper than replacing the whole lock. If your key is worn, needs jiggling, or you have lost a set and want the old keys dead, a new rim cylinder is £30 to £55 fitted and the latch case and everything else stays where it is. The full lock only needs replacing if the case itself is damaged, if the latch mechanism has genuinely failed, or if you are upgrading to BS3621, which is a different lock rather than a different cylinder.