A device for securing access, typically on a door, and typically controlled with a key or combination.

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16
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5answers
61k views

What kind of lubrication should I use for a lock?

I recently made the Yale lock on my front door much easier to open by spraying some WD-40 in there. However, I just saw this question on WD-40 not being a “true” lubricant, and wondered whether it ...
15
votes
1answer
2k views

How does Schlage SecureKey Re-keying mechanism work?

Here is their consumer info. And here is an amateur teardown, although I can't tell from the pictures how the thing actually works. Does any one have any better powers explanation? But beyond just ...
13
votes
6answers
26k views

How to tell if your locks are bump proof?

I was reading about lock "bumping" where burglars buy 'bump' keys and can open locks very quickly. I was also reading that some locks are bump proof (double chamber perhaps?). My question is: how can ...
12
votes
1answer
2k views

How do I unscrew these?

I'm a college kid trying to sneak my boyfriend in my dorm window. The first section is the holder on the window, the second part is the end of the slider on the window. All I have to do is ...
9
votes
1answer
790 views

What lubricant should I use for an outside garage door lock?

I recently asked what sort of lubricant I should use on locks. I was wondering if the advice there (i.e. graphite powder) applied to an outside garage door handle lock? The lock in question looks ...
8
votes
6answers
11k views

How do I disable a lock?

I have the following door handle / lock combination that leads out to my garage. The key for the door has long been lost and sometimes someone will turn the internal lock and the door cannot be opened ...
8
votes
5answers
8k views

What is the best way to secure a set of folding attic stairs?

My company is opening a new office in an existing office building. While inspecting the office prior to move-in, I noticed that the attics between all suites in the building are open to each other. ...
8
votes
4answers
757 views

Door lock and unlock based on authorized user proximity

I want to install an electronic lock on my office/workshop that only a specific individual(s) can unlock. I want it to lock every time the door is closed and the room is empty but I do not want to ...
8
votes
2answers
1k views

How long do batteries typically last in electronic deadbolts?

I'm considering getting a Schlage Plymouth Keypad for our front-door but was curious how long the 9V battery typically lasts. The web site says "3 year battery life" but I'm... skeptical. =) Has ...
8
votes
2answers
2k views

Are easy-rekey locks reliable?

I want to replace an old deadbolt and handle on my front door, and most of the replacement sets at big-box home improvement stores are the easy-rekey kind. Kwikset's SmartKey seems better executed ...
7
votes
6answers
9k views

Is it worth having two locks in exterior doors?

I've noticed that some places have a lock in the knob and a deadbolt in the exterior doors, and some places have a knob without a lock and just a deadbolt. Is there a benefit to having a lock in the ...
7
votes
5answers
12k views

How can I remove a key that has broken off in a lock?

I broke a key off in the lock of a desk drawer. The lock doesn't look easily replaceable, so how can I remove it? I've tried tweezers but they can't get enough of a grip to pull it out.
7
votes
6answers
8k views

How can I fit a Schlage lockset in my front door?

I moved into a condo with a Kwikset lockset in the door. I wanted to replace it with a Schlage lockset, but the actual bolt portion of the deadbolt was too large to fit into the pre-drilled hole. If ...
7
votes
6answers
30k views

Did I break my Kwikset SmartKey lock by trying to rekey with a key that doesn't fit all the way?

I got a Kwikset deadbolt lock (has key hole on both sides instead of key hole externally with latch internally). This lock uses SmartKey technology so you can rekey the lock to use a new key rather ...
6
votes
1answer
59k views

How do I remove a Kwikset deadbolt with no screws on the inside plate?

My exterior door deadbolt has gotten stuck - it'll open with the lever but not the key. By spraying WD-40 inside the lock, I've been able to get it to work but it's very stiff. I'd like to remove the ...
6
votes
1answer
141 views

What kind of lock used to be here?

We're moving into a new place and have been told by the building's management that the top lock on our door is our own responsibility. It appears that the previous tenants had something in the top ...
5
votes
5answers
11k views

How can I prevent an outside lock from freezing?

I store a bunch of the "outside stuff" in the shed for the winter. Mainly things that I only use when the weather is warmer. It pretty much remains locked up for the winter. Occasionally though, I ...
5
votes
2answers
536 views

How to install an electronic door lock?

How can I install an electronic door lock ? Can an electronic door lock be installed on any door ? I am fixing to purchase an apartment in Australia and it will come with a "Solid Core door with ...
5
votes
5answers
2k views

Home wireless lock

How can I improve my home with a kind of front door lock that would act like those car that can unlock when it receive signal of the key in your pant? My goal would be to keep my keys in my pant ...
4
votes
2answers
2k views

How can I remove a lockset latch assembly that's stuck latched?

My latch is stuck. I couldn't turn the handle, even unlocked, so I removed the handles. Now I've got direct access to the latch assembly, and I can't get the unlatching part to move (to the right, in ...
4
votes
4answers
500 views

Where can I find a key for my old locks?

My house was build in 1938 and the whole house has these door knobs everywhere. I believe they were made by Dexter. Is there a way to ID them properly and, if so, where can I find someone who makes a ...
4
votes
2answers
5k views

What is the name of this cast metal part inside my lockset?

I have a Baldwin front door lockset that doesn't completely retract the latch when using the thumb lever. The handleset is similar to this: model After dismantling the thumb latch assembly, I ...
4
votes
1answer
2k views

How can I remove a Mortise Lock and deadbolt from a door?

I got an old door from a junk yard that I'm trying to reuse. The door is going to end up being sliding barn door so I have no use for its existing door knob and lock mechanisms. From what I can tell ...
4
votes
3answers
2k views

How can I install modern locksets on these interior doors?

I've recently bought my first house which I'm very excited about, got into the decorating phase and decided to replace the door handles - some of which were damaged - with nice new ones. Being a ...
4
votes
2answers
41k views

How do I fix an exterior door knob that will unlock but not turn?

My back door (which is only two years old) has a door knob that recently suddenly stopped turning. I can lock and unlock it, but it just won't turn. Here's a picture of the inside of the door knob: ...
4
votes
1answer
68 views

Metal doors, Mortise locks, and … mobile liner?

Spent last night retrofitting a fancy electronic combination lock on a metal door for the first time, and encountered something I don't understand. The door has previously had another mortise lock, ...
3
votes
6answers
38k views

Why does my latch not retract when I push or swing the door shut, but will retract when the knob/lever is used?

This just started today. I have to turn the knob in order for the latch to retract. Before, I could just push to door shut and the latch would retract when it hit the plate on the door frame. But now ...
3
votes
3answers
424 views

Jack and Jill bathroom light sensing door locks

I have an interior Jack and Jill bathroom that is connected to two bedrooms. I'm trying to solve the problem of someone locking the other door when using the bathroom and then forgetting to unlock it ...
3
votes
2answers
299 views

should door locks and deadlocks be keyed the same

Should door locks and deadlocks be keyed the same. Is there any advantage or disadvantage (besides having more then one key) in having them keyed different?
3
votes
1answer
438 views

What kind of (1950s era) lock is this

My home, built in the late 1950s, has these cute little additional locks on top of the main doorknobs to many of the interior rooms. I can't seem to find the correct term for these locks, which would ...
3
votes
1answer
8k views

How do I replace mortise locks with bored cylindrical locks?

I purchased an older home that has mortise locks in all of the doors. They're all very difficult to use and some of them don't work at all, making the doors difficult to impossible to close. Since I'm ...
3
votes
2answers
950 views

How do you install a slide lock when the door frame isn't level with the door?

I need to lock a door without a keyhole from the inside and got recommended to use something like this: However, my door frame isn't level with the door If I would just mount it there, the ...
3
votes
3answers
195 views

What are the key criteria to consider when purchasing new locks and deadbolts?

On twitter, the cofounder of GDGT Ryan Block comments: Surprisingly difficult to find a list of expert-recommended consumer locks, padlocks, etc. Lots on defeating security, but few suggestions. ...
3
votes
1answer
859 views

How do I repair this old door lock?

An old knob on my bedroom door fails to retract to its normal position. I opened the lock in an attempt a repair it and discovered two loose springs. I suspect that the loose springs aided a third ...
3
votes
5answers
6k views

How can I remove a jammed, broken key from a lock?

I have a key to an apartment mailbox that was almost impossible to get the key in and out of to unlock, and in trying, my roommate broke the key off in it. From looking in with a light, it seems that ...
3
votes
1answer
274 views

What is this door hardware called?

Can someone help me out and let me know what these are called? I'm looking on a DIY site to order one but can't work out what these are called to be able to find them. As you can see in the ...
2
votes
4answers
24k views

How to drill a hole in the wood without an electric drill?

During a travel in Laos, I need to drill some holes into a double-door's wood to install a locker. The wood is rather hard, and I don't have an electric drill (and can't find it). I only have 2 small ...
2
votes
4answers
35k views

How to remove a stuck key?

A hypothetical question - if I get a key in the door lock from one side of the door, could I somehow use another key to open the door from the other side? And what if you could "engineer" the stuck ...
2
votes
3answers
2k views

Can someone unlock a locked door and lock it back again without the key?

Is it possible for someone to unlock your front door get into your house and then lock the door again without being supplied with a key?
2
votes
5answers
11k views

How do I open a padlock after it has frozen?

I do some maintenance on the neighborhood ice-skating rink. To control the lights, there is an outside electrical panel that is locked with a padlock. This padlock always get frozen. Every time I ...
2
votes
1answer
583 views

What is causing discoloration on my bronze-finished lockset?

We bought a bronze finished lockset about five years ago, and now a lot of it is ashy looking and green in some places. It looks a little worse every year. It's on an exterior door facing west. ...
2
votes
5answers
125 views

What factors influence the security of a front door lock?

Due to misplaced keys, we are going to either rekey or replace an old lock on our front door. The manufacturer was Barrows, which seems to be somewhat rare since our local hardware doesn't carry ...
2
votes
4answers
297 views

How do I find a replacement door lock for this?

I moved into a newly built home and am trying to replace the deadbolt and the lever below. But I'm not able to find a replacement lock that replaces my existing locks. All locks I've looked at have ...
2
votes
1answer
2k views

Why did my locked door open by itself?

Why would our front door have opened by itself? It was locked. It has an entrance set - a latched, not deadbolt, knob handled, keyed on the outside and turnsnib on the inside style lock. We have had a ...
2
votes
1answer
175 views

Removing old Entry Door dead bolt lock

Attached is the picture of circa 1987 dead bolt lock from the back after removing the back plate. Could not find manufacturer name but seems like Kwikset based on key types. The front of the lock ...
2
votes
2answers
4k views

How do I install a chain lock on a steel door?

I'm tring to install a chain lock on the inside of my home. I've tried millions of things to get a hole in the steel door. Is a 12 volt drill not powerful enough?
2
votes
2answers
2k views

Where can I get a new key for an old lock?

There are two locks on my apartment door. The key to the bottom lock was lost long ago - before I moved in - and we now just use the top lock. The bottom lock is probably 50-60 years old and ...
2
votes
2answers
58 views

Is it possible to modify my new europrofile cylinder lock to work in my traditional night latch?

We have a traditional night latch. We need to change the lock to use a different key. We accidentally bought a europrofile cylinder lock. I know from videos like this one that a lock can be ...
2
votes
1answer
298 views

Which cylinder door lock shield design is most secure?

I'm planning to place a shield on my front door and would like to know which of the 3 shield designs is the most secure option and why. Basic design characteristics: Top Left: the outside part of ...
2
votes
1answer
236 views

Did I break my door lock by locking it from the inside before exiting?

The lock on my front door is broken. When I leave my house, I lock the door handle from the inside, then close the door and lock the deadbolt with the key. My boyfriend is trying to tell me that ...