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Door locks are a common and necessary security feature in most homes. While they seem like a simple devices, there is more to door locks than meets the eye. There are different parts of door locks that work together to keep your home safe. This blog post will discuss the different parts of a door lock and what each one does. Stay safe and secure by knowing how your door lock works!


How Does A Door Lock Work?

A door lock is a device that is used to secure a door in order to prevent unauthorized entry. The most common type of door lock is the deadbolt, which uses a bolt to secure the door in place. Other types of door locks include knob locks, which use a knob to engage the locking mechanism, and lever handle locks, which use a lever to engage the locking mechanism. Door locks can be either manual or electronic, and they can be operated with a key, a code, or a fingerprint.


How Many Parts Are In A Door Lock?

A door lock is made up of five main parts: the latch, the bezel, the knob, the strike plate, and the deadbolt. The latch is the part of the lock that actually secures the door shut; when you turn the knob, it disengages the latch so that you can open the door. The bezel is the metal ring that surrounds the knob; it’s what you see on the outside of the door.

The strike plate is a metal plate affixed to the doorframe; when the door is shut, the latch engages with the strike plate to keep the door shut. The deadbolt is a second, heavier-duty door lock mechanism that provides an extra level of security. It works by throwing a bolt into a hole in the doorframe; when it’s engaged, it’s very difficult to force open the door. All of these parts work together to make a door lock secure.


Different Parts Of A Door Lock And How It Works

A door lock is a device that is used to secure a door from unauthorized entry. There are many different parts to a door lock, and each part plays an important role in the function of the lock.


The following is a list of the different parts of a door lock and how they work:



The deadbolt is the most important part of a door lock. It is a heavy-duty bolt that is inserted into the door frame to secure the door.


Latch Bolt

The latch is a smaller bolt that is used to keep the door closed. It is located at the top of the door and is usually operated by a knob or lever.


Strike Plate

The strike plate is a metal plate that is mounted on the door frame. It is used to reinforce the door and to provide a surface for the latch or deadbolt to engage when the door is closed.



The keyhole is used to insert a key in order to operate the lock. It is usually located near the top of the door.


Lock Cylinder Or Lock Body

The cylinder is the part of the lock that contains the tumblers. It is located in the keyhole and is turned by the key in order to operate the lock.



The tumblers are the internal parts of the lock that must be aligned in order for the lock to be opened. They are located inside the cylinder and are operated by the key.


Spring Bolt

The spring is a small device that is used to keep the tumblers in place. It is located inside the cylinder and helps to keep the tumblers aligned.


Retainer Ring

The retainer ring is a small metal ring that is used to hold the cylinder in place. It is located at the base of the cylinder and helps to keep it from being removed from the door.



The screws are used to secure the strike plate to the door frame. They are located at the top and bottom of the strike plate.


Knob Or Lever

The knob or lever is used to operate the latch. It is usually located near the top of the door.


Popular Type Of Lock

There are many popular types of locks that people use to keep their belongings safe. Some of the most common locks include padlocks, deadbolts, and combination locks. Each type of lock has its own unique features and benefits that make it ideal for different situations.



Padlocks are one of the most common types of locks, and they come in a variety of sizes, shapes, and colors. The three most common types of padlocks are keyed locks, combination locks, and shackle locks.

Keyed locks have a keyhole that is used to insert the correct key, while combination locks have a dial or door knob that must be turned to the correct combination. Shackle locks have a U-shaped metal bar that fits around the hasp of a door or other object. Padlocks can be made from a variety of materials, including brass, steel, and aluminum. Some padlocks are even coated with zinc to prevent rusting.


Electronic Lock

Nowadays, we are increasingly seeing electronic locks in our everyday lives. From the front door of our homes to the office building we work in, these locks provide a high level of security that traditional mechanical locks cannot match. How do they work? Electronic locks use an electronic key, which can be in the form of a card, fob, or smartphone, to communicate with the lock.

The key sends a signal that tells the lock to open. This type of system is very difficult to pick, and it is also much more convenient than a traditional key and lock system. With an electronic lock, there is no need to worry about losing your keys or having them stolen. You can also easily add or remove users from the system, making it a great choice for businesses and other organizations that need to control access to their premises. These locks are handier than traditional locks.


Combination Lock

A combination lock is a type of locking device that uses a set of digits or symbols (sometimes letters as well) as a key. The first known combination locks were used in ancient Egypt more than 4,000 years ago. In the early 1800s, banks and other businesses began using more sophisticated versions of the combination lock.

Today, combination locks are used on everything from safes and bicycles to locker doors and computer passwords. While the basic concept behind a combination lock has remained the same over the centuries, the technology has become increasingly sophisticated. Many modern locks use electronic mechanisms that can be programmed to create an infinite number of possible combinations.


When it comes to your security, don’t take any chances. Make sure you know the different parts of a door lock and what each one does

There are many different types of door locks and each one has its own unique purpose. If you’re not sure which type of lock is best for your home, our experts can help you choose the right one for your needs.

With a new door lock from King, you can rest assured that your home is safe and secure. We carry a wide variety of locks to choose from, so you’re sure to find the perfect one for your needs.


Contact us today at (800) 231-5499 MD, (301) 363-2264 DC to learn more about our door locks and how we can help keep your home safe!

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