Glossary: Technical terms from the locksmith world
Cylinder core simply explained
A lever handle set refers to the set of door handles and various fittings. It combines design and function…
Cylinder housing explained simply. This is where the cylinder core rotates!
The cylinder core is one of the most important components of a lock cylinder. Only when the cylinder core is fitted with the correct profile key…
Door frame explained simply – also known colloquially as door jamb
The cylinder housing is the component of the lock cylinder in which the cylinder core rotates, enabling the locking and unlocking of a…
Door frames explained simply: the framing of the wall opening
A door rosette covers the drill holes for the handle and lock cylinder, providing a clean finish…
Door handle explained simply – in technical terms, door lever handle
The door frame is the part of a door that is set into the wall and, when closed, surrounds the door leaf…
Door handle sets explained simply: Door handles & matching fittings
The locking bolt is the component of the lock cylinder that is set in motion by the rotation of the profile key in the cylinder core…
Door hinge explained simply – some also call door pivot
The two most important components of a door are the door frame and the door leaf. While the door frame is the fixed component…
Door hinge explained simply – visible / concealed, always important!
Door hinges have the important function of connecting the movable door leaf (also called door leaf) to the frame (also called door jamb)…
Door leaf explained simply – some also call it door panel
The door handle is a central component of a door. When this handle, technically called a door lever, is operated or pressed down…
Door leaf explained simply (some also say door wing)
While the door frame (door jamb) is the part of the door that is inserted into the wall opening, the door leaf (door leaf) is the part of the door…
Door rosette explained simply – decoration & protection for the door lock
While the door leaf is the movable part of a door and allows the door to open and close, the frame is the part of the door…
Forend explained simply – the end plate on the front edge
The forend is the part of a door that connects the door leaf to the door frame and allows the door leaf to rotate…
Key channel simply explained
The strike plate is the end plate of a lock, attached to the front edge of the door leaf. It allows the latch and bolt to extend from the lock…
Locking cam (locking lug, follower or locking bolt) explained simply
The lock cylinder is a component, usually made of metal, that is used in a lock, or more precisely, in a profile cylinder lock…
Lock cylinder: What is a lock cylinder and how does it work?
The latch is precisely the component of a door lock that holds the door in the strike plate when the door is closed…
Lock latch (also called catch or simply latch) explained simply
The purpose of installing a lock is to secure a house or room door, a garage or garden gate, a safe, a chest, a cabinet…
Lock nut explained simply – the square thing turns in a round thing!
The keyway is the part of the lock cylinder into which the profile key is inserted. For security reasons, modern keyways have…
Locks: What is a lock and how does it work?
The lock follower is an important component in a gate or door lock, as it has the central function of enabling the pressing of the door handle or…















