Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [lock]

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

38
votes
11answers
16k views

How can I allow 911 first responders to access a locked residence? [closed]

What if I live alone and cannot unlock the door during an emergency? What can I do to enable 911 responders to enter my residence without tearing down the door?
27
votes
5answers
188k 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 ...
26
votes
3answers
9k views

How to open a door that has the insides of a door handle inside without a door knob

Currently this is what my doorknob looks like below I was trying to change out my doorknob and left both sides inside of the room but the AC kicked on and shut the door on me and now I am stuck ...
16
votes
8answers
38k 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 ...
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 ...
12
votes
7answers
4k views

Suggestions for gate latch issue

Let me preface by saying that I'm not really looking for "shopping advice". I just need some direction on how to tackle this issue. We recently purchased a house and it has a block fence around the ...
12
votes
1answer
3k 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 disconnect ...
11
votes
1answer
128k 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 ...
10
votes
5answers
4k views

What is this kind of door lock called in English?

Would it be called "overlap door lock"? Instead of being installed inside the door, it is screwed outside of the door.
10
votes
6answers
29k 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 ...
9
votes
8answers
33k views

How do I disable a locking door latch?

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 ...
9
votes
4answers
1k 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 ...
9
votes
2answers
5k 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 ...
9
votes
1answer
2k 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
7answers
68k 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 ...
8
votes
6answers
14k 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 ...
8
votes
5answers
14k 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
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
5answers
19k 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.
6
votes
5answers
18k 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 ...
6
votes
3answers
5k views

should door locks and deadlocks be keyed the same [closed]

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?
6
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 ...
6
votes
1answer
180 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 ...
6
votes
1answer
388 views

How to install a replacement lock in a mailbox?

How do I install this lock in my mail box? Where do I twist/turn/rotate/pull to separate the thick front part from the end part?
5
votes
5answers
3k 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 ...
5
votes
2answers
630 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
3answers
8k 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 ...
5
votes
3answers
73k 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
6answers
95k 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 ...
4
votes
2answers
15k 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
10k views

Where do I buy a weather proof combination padlock?

I have a shed that I use a padlock to secure. The last lock I had lasted a year before failing. It cost about $40. My wife prefers combination so she won't need her keys just to work in the yard. I ...
4
votes
2answers
137 views

Two way door lock for thin door

I'm converting one of the rooms in my 1840 house into an office. The thing is I have 5 kids and need to be able to lock the door so I can have some level of quiet. I also don't want the kids tinkering ...
4
votes
3answers
6k 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
1answer
4k 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
5answers
15k 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 ...
4
votes
1answer
4k views

Door lock stuck, will NOT retract

Interior laundry room door leading into garage. Keyed door lock will NOT retract no matter what I do. Can't take door off hinges b/c middle hinge is one of those spring loaded kind that doesn't have a ...
4
votes
1answer
478 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
8answers
32k 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 ...
3
votes
3answers
6k 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
5answers
247 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 ...
3
votes
1answer
1k 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
2answers
883 views

Ways to mitigate safety risks with double cylinder deadbolts on enterance/exit doors?

While double cylinder deadbolts (those deadbolts on house doors that require a key from both sides) can be good for security, it could be a trade-off with safety if needing to get out of the house in ...
3
votes
1answer
11k 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
3answers
14k views

Without Access to the Garage Interior, How Can I Replace the Handle/Lock?

I have an external garage, with a manual overhead door (no powered opener). There is no side access door. After the recent winter, I tried opening the garage again, and the handle will not turn. I ...
3
votes
2answers
4k 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 slider ...
3
votes
2answers
3k 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 doesn'...