Understanding Door Hardware Terminology
The operating element of door hardware which you hold to open or close the door. This can come in several forms, including:
Lever: The operating component of the handle that is pushed down to open/close the door.
Pad: The handle pad is another functional element of the handle, designed to mimic a traditional knob.
Internal and External Backplate
The flat, often rectangular, back part of the handle which is screwed onto either side of the door, attaching the handle to the door.
A mechanism which holds a door closed and secure to the doorframe, the latch protrudes from the faceplate on the edge of the door and is generally used for doors which do not need to lock.
An internal mechanic found within the door handle, the bar attaches the body of the lock or latch to the handle’s levers or pads so that as the lever is operated, the latch or lock opens and closes.
Split spindle: Rather than the solid bar of a traditional spindle, this bar is split so that the external and internal halves of the spindle do not work in unison, meaning you can operate the handle on the outside of the door and it will not operate the latch.
Offset spindle: The offset spindle works similarly to the split spindle, however, it has an additional drive for offset door handles in order to keep the door locked in a closed position.
Deadbolt or Hookbolt
The locking element of door hardware is operated by a spindle and thumb turn, which can only be opened by a handle or key.
Door hardware which attaches the door to the door frame, whilst still allowing the door to move; the frame plays an integral part in door security.
The door cylinder refers to the internal locking mechanism which is turned by a key – if this is the correct key it withdraws the bolt and the door will open.
A metal plate which sits inside the door jamb on the door frame, reinforcing the area where the latch or deadbolt from the lock extends into the door frame. The strike plate is essential to the security of a door and is often forgotten about.
A flat, usually rectangular surface attached to the edge of the door, and fixed with screws, which conceals the lock body inside the door.
A sash lock combines the use of a deadbolt lock and a latch with a handle, meaning the door will remain shut without having to be locked; this is suitable for external door handles with a lock and key. The types of sash lock door hardware include:
Mortice: A mortice lock sits flush to the edge of the door in a hole.
Euro: A euro sash lock uses a euro cylinder profile, meaning both sides of the lock cannot be used simultaneously.
Rim: Rim locks are installed on the face of a door, rather than being concealed in the door edge like a mortice lock.
Bathroom: Sash locks for the bathroom prioritise privacy and often feature thumb-turn locks with a handle.
An additional mechanism which helps control the closing of a door, either automatically or manually to protect the door and for safety and security measures. They are often found in high-traffic locations such as schools, shops industrial and public buildings.
An escutcheon is a keyhole cover – the plate fitted around the keyhole on a door’s surface to protect the door against damage and for aesthetic purposes.
Security escutcheon: Plates secured around the keyhole and door cylinder to prevent the misuse of a door’s bolt for unwarranted entry; suitable for front door hardware and external door handles.