Types of Deadlocks for Doors
Hook bolt deadlocks are used on narrow storefronts made of aluminum sliding doors to enhance lock strength and security. The locks are keyed on both sides for greater flexibility in access control.

To accurately measure a new lock, you must first determine the door's case thickness (or backset). This is the distance from the edge of the door to the center of the latch hole.
Tubular Latch
The tubular latch is the most popular door latch. It's easy to install, which makes it a popular choice for DIY enthusiasts and joiners alike. It's also available in a broad range of sizes, shapes and quality levels to suit any door handle style.
A tubular latch is a rectangular steel casing with an latch bolt and an encased latch follower that is spring-loaded (also called a striker). When you open the door the latch retracts, allowing you to shut and lock it. When you close the door the latch bolt springs back and grabs the edge of the frame to hold the door shut.
You'll have to decide the height of the door's latch before you install it. Many people believe that a latch and handle should be placed at a height of a millimetre above the floor. But this isn't always the situation. The latch on the door knob should be placed in the middle of the rail. hook lock van is where most of the weight is transported by the door when it is opened and closed.
Mark the location of the hole in the door and strike plate with a pen once you have decided where the latch should be. Then, drill pilot holes to the screws that are used to attach the plate to the door. After you've drilled your pilot holes, you can use a countersink to ensure the plate's back will be in line with the door after it's screwed in place.
If you're looking for a stronger-duty alternative to the standard tubular latch, you should consider choosing a double sprung variant. The door will shut more easily when you use this type of latch, since it comes with a separate spring to move the tongue. It also features a heavy-action spring on the spindle follower, which ensures that doorknobs and levers return to their horizontal positions following each use.
After you've attached the latch to the door, you'll need fit a strike plate to the frame. The strike plate is a piece of metal that fits into the gap left by the latch after it's closed. Mark the location where you want to place the strike plate on the frame section surrounding it. Cut with your knife a square for the plate, and then remove it.
Cylindrical Latch
Cylindrical locks are commonly used for doors in the interior. They are used in offices and homes and are able to be used in a wide range of applications. Cylindrical locks function similarly to mortise lock systems but are much simpler and quicker to install. They don't require an opening pocket, or "mortise," to be cut into the door's frame like mortise lock systems do. They are simply inserted in the hole, or bore, that is cut into the door's frame. They are available in various grades and are compatible with both knobs and levers to shut and open the door.
The primary difference between mortise and cylinder locks is that these locks are only opened with the right type of key. The pins are secured by springs and pins with different heights. Once the correct key has been inserted, the pins will align with each other and allow the cylinder to turn. This allows the latch bolt to retract, and the door can be opened.
When the wrong key has been put in, the pins aren't aligned correctly, which stops the cylinder moving. This is why it's important to select the correct key whenever you want to enter your home or business.
The cylinder is situated inside the door's body and is connected to the operating trim by a square or a half-round extension. The cylinder also has small notch on its side that are designed to be aligned with the key notches when the correct key is inserted. Once the cylinder has been moved and the latch bolt is inserted, it will follow.
A strike plate is a plate that is attached to the door frame and is able to catch the projected latch bolt of the lock. The strike plate is generally constructed from heavy-gauge steel and is attached to the frame of the door using screws. It also has a strike opening into which the latch bolt of the lock is inserted.
Use the right tools to remove the knob or handle of the old lock and the latch bolt. Note the place of the new strike bolt and latch bolt on the frame and door after removing the old hardware. It's a good idea to check the operation of your lock by pressing against the strike bolt or latch with your finger. If the strike plate or latch bolt is damaged or does not work properly, you should think about replacing the bolts and strike plates.
Key-Locked Latch
This type of lock is controlled with the key on the outside and a knob or lever on the inside. It is typically used in areas where the use of the lock is not an issue, such as office doors. This type of lock permits the outside lever to be in a locked or unlocked position and the inside knob/lever is always open for immediate exit. The key is only needed to retract the latchbolt once the door is closed.
The pins of a key-lock are aligned and pointed at a point called the shearline. The pins are aligned with the shearline once the key that is needed is placed into the lock. The plug can then be turned to release latchbolt. If you've ever encountered keys that fit perfectly into a lock but still won't open it could be due to one of the pins isn't aligned with the shear line.
Some locks also come with a face plate, which is affixed to the door's edge and can be decorative as well as add protection and security to the locking mechanism. It's common to see these plates on mortice locks as well as rim locks with reversed spring bolts.
There is also a strike plate that is typically connected to the jamb and frame of the door and has a hole that guides the bolt from the cylinder into the lock. This is often utilized together with deadbolts to provide additional security.
The cylinder is the final component, and it is a home for pins that are aligned with the key's edge to stop it from turning. It is difficult to select an appropriate cylinder without the proper tools and knowledge. To lock the front door, you need to turn the key in the same direction that the door opens. If the door opens using the right hand, for instance the key needs to be turned clockwise in order to secure the door. To unlock you can turn the key counterclockwise. This differs from other locks that require turning the key in the opposite direction to the opening of the door as in for instance a Chubb lock.
Keyless Latch
With a keyless latch you can lock and unlock your doors without the use of a traditional key. Keyless locks can be operated with a smartphone app or an access code and some models include a hidden camera for added security. Consider your security needs as well as compatibility with existing hardware and doors when you select keys-free locks. Read the instructions of the manufacturer and specifications before installing. Certain keyless locks could require special door modifications or preparations.
Several companies are developing smart lock technology that replaces traditional locks with keys, and adds security features. These locks are more durable and can be unlocked through a code, fingerprint or facial recognition. Certain smart locks come with the ability to detect tampering, and detect if a door has been opened with a key that is not authorized or force.
One company, named Latch has come up with an elegant high-tech lock that operates similarly to other smart locks. Its primary target market is real estate firms that manage apartment buildings. The lock can be unlocked by using a passcode, key or mobile phone, and tenants are able to let in dog walkers, cleaners, or guests from out of town with temporary codes. The company claims this will prevent tenants losing their keys, and will reduce the cost of maintenance since there is no need to replace locks if a renter moves out.
The Latch lock isn't available to the general public yet, but it could be a possibility to be installed in large apartments or condos. The company has already begun testing the lock in a few places, and plans to launch more units in the coming year. The cost is similar to a regular lock. The company also offers low software fees and competitive pricing.
The Latch App can be used to control which doors are shown as shortcuts. You can adjust this at anytime. Launch the app and select the menu in the top left corner of the screen. Then select 'Widgets', and choose the doors you wish to display as shortcuts. You can see the history of access to your doors on the Latch App once you have configured them.