What are the parts of a lock?

The main parts of a door lock are the cylinder, bolt, box and strike plate. It's useful for any DIY-er to know how things around the home operate.

What are the things in locks called?

Bolt The part of a lock or latch which provides the fastening or engagement by protruding from the case or forend to engage in the staple, striking plate, link, shackle or other members. Bow (of a key) That part of the key which is held in the fingers when operating the lock or latch.

How many parts are in a lock?

The pin tumbler lock is composed of 6 primary components. These components are: The Lock Housing: The outer shell of the lock that contains the rest of the lock's functional components. The Plug: A small cylinder that rotates within the housing when the correct key is used.

What is the middle of the lock called?

The Cylinder: Also called the body, this is the part where the key is inserted. When it is locked, a series of spring-loaded pins are engaged by the cylinder.

What is a lock plate?

Locking plates are fracture fixation devices with threaded screw holes, which allow screws to thread to the plate and function as a fixed-angle device ^{1 - 3}. These plates may have a mixture of holes that allow placement of both locking and traditional nonlocking screws (so-called combi plates) ^{4 , 5}.

How does a Pin Tumbler Lock work?

What is a strike plate?

Strike Plate

This is the plate the latch-tongue, or deadbolt-tongue will connect with. It should sit flush with the door jamb. Any passage or privacy set needs to have a strike plate for the door to latch. Additionally, deadbolts need a strike plate to properly lock.

How many pins are in a lock?

Many locks are made of the same basic parts: pins (usually 12) and springs. The upper six pins are the same size, and the bottom six pins come in varying sizes to match up with the grooves on your particular key. The little springs serve to hold the pins in place.

What are the parts of a combination lock called?

Plating the components

The lever, disc shaft, combination cam, and dial are chromized. The inner case, shackle collar, and lever post are all cadmium-plated. The shackle and locking latch are copper nickel-plated. The outer case, of stainless steel, is mechanically polished to enhance luster.

What are the parts of a key called?

A typical key is a small piece of metal consisting of two parts: the bit or blade, which slides into the keyway of the lock and distinguishes between different keys, and the bow, which is left protruding so that torque can be applied by the user.

What are the parts of a doorknob?

Other Door Knob Parts and Terms

Cylinder Housing – Inside and at the center of a locking doorknob, there is a cylinder that contains the lock mechanism and keyhole. Outside Knob – The doorknob on the outside of a door. Inside Knob – The doorknob on the inside of a door.

What is a door striker?

When discussing door hardware, a "strike" or "door strike," refers to the metal plate or assembly that's installed into or onto a door frame to "catch" the latch or bolt to hold the door closed. You've seen thousands, maybe millions, of door strikes in your lifetime.

What is the inside of a door knob called?

A keyway is the actual key cylinder that is inserted into the door knob. When a door knob is unlocked, the key is inserted into the keyway and the lock mechanism is unlocked as the key turns.

What is a lock nib?

Has a push in knob or turn nib on one side for locking the door and a safety release function on the other side. These are generally used for internal doors such as toilets or bathrooms, where there is a need for the door to be lockable, but it can be unlocked with requiring a key, normally a screwdriver is required.

What are the edges on a key called?

Bow or Head

This area is called the key head, located at the cop of the key. The shape of the bow or head varies uniquely depending on the type of design or lock brand you're working with. Almost all keys have a small hole in the bow or head for connection with key rings.

What part of a lock is the shackle?

The shackle or shank is the U-shaped bar that loops round from, and back into, the padlock body. This is the most exposed part of the padlock and more susceptible to be attacked. Once again, as the overall size of the padlock increases, the larger the shackle can be making it more secure.

What is the hasp on a padlock?

A hasp is a slotted plate that fits over a loop before a pin is inserted through the loop, securing the hasp. A padlock may also be inserted through the loop, instead of a pin. Essentially, a latch is a fastening that engages with a catch, keeper or strike plate to hold the door closed.

What is lock mechanism?

A locking mechanism is a mechanical system which provides assistance to the coupling and uncoupling of two connectors and the fixation of the two parts in operating position. The locking system helps to maintain the primary function of electrical continuity and is involved in the sealing performances of products.

What is the shear line in a lock?

Definition: Shear line – in a cylinder lock, the shear line is where the inner cylinder (the plug – what you put your key in to) ends and the outer cylinder (the shell) begins.

What makes a lock hard to pick?

Each key has a complex rounded shape, this coupled with the magnetic element makes it an extremely hard lock to pick. The only way to gain access to the door would be for the key to be cloned, and in that case, a master locksmith would need to get their hands on the original key.

How does a 5 pin lock work?

Kwikset pin and tumbler locks operate by matching the cuts on the keys with the bottom pins inside the cylinder plug. In a 5-pin system, there are two sets of five pins in each lock, top and bottom, and a set of springs. The top pins are all the same size and are flat on both ends. The bottom pins vary in length (in .

What are jambs on doors?

A door jamb is an individual section of a door frame. Two side jambs make up the vertical components of the door frame and the head jamb is the top horizontal component. Together, the jambs (along with mullion) comprise the door frame.

What is a mortise plate?

A mortise refers to the pocket cut into the door where the lock is fitted. Therefore, a mortise lockset cannot be installed on just any door. They are great for replacing the hardware on homes built before 1950. They can be used on new doors, but special preparations must be made.

What is a latch plate on a door?

It keeps the door in place until the door knob or lever is turned which releases the latch.

What are the bumps on a key called?

The small bumps or ridges (homing bars) found on the F and J keyboard keys (position keys) help position your left and right hands without having to look at the keyboard. For example, without looking at your hands, you can feel the small bumps to correctly position your left and right index fingers on the F and J keys.

What is a sash lock?

Sash locks, also known as mortice sash locks, use a combined mechanism of a deadbolt, latch and handle mechanism. A sash lock is also one of the most common styles of lever lock used on interior and exterior doors, usually fitted within the material of the door.