ABLOY 3020 Cast brass padlock: specifications and selection checks
ABUS 100 Hasp reference
Danabridge V3: two-lock capacity and placement of the 2.4 GHz network bridge
Kwikset 158 Single cylinder Deadbolt lock: function and door-thickness specificationsBackset
Backset is the distance from a door-edge datum to the lock operating centre or specified bore centre. Confirm the datum used in the manufacturer's drawing before reading the value.
Lock encyclopedia
Explore lock components, technical terms and manufacturer documents.
Models
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Lock components
Identify door lock components by their position and function, from cylinders and bolts to handle connectors.
Dimensions and compatibility
Understand backset, door preparation and door thickness, including measurement reference points and drawing checks.
Electronic functions
Understand the differences between PIN access, connectivity and remote management, and the equipment each function requires.
Installation and maintenance
Build routine inspection practices around cleaning, batteries and installation documentation.
Lock types
Distinguish passage, privacy and fixed pull functions instead of judging function by appearance.
Standards and testing
Understand residential lock ratings, durability and finish tests, and distinguish test results from promises about use.
Articles
BHMA residential lock ratings
BHMA Secure Home residential lock ratings assess security, durability and finish separately. Read all three dimensions rather than treating the label as one overall grade.
Bluetooth and Wi-Fi connections
A smart lock may use both Bluetooth and Wi-Fi, but their availability and supported operations depend on the specific model and application conditions.
Door-lock bore holes
Lock preparation includes the main bore through the door face and the bore from the door edge. Distinguish their positions when reading bored-lock documentation.
Cylinder escutcheons and protective guards
Escutcheons and protective guards around a cylinder opening can look similar while differing in material, construction, fixing method and compatibility. Selection should distinguish door-face coverage from the specific purpose of a protective device.
Cylinder thumbturns and prepared-shaft interfaces
A companion thumbturn must match the cylinder's prepared-end interface. Grip shape and dimensions describe operating clearance only; they do not independently establish bore, fastening or functional compatibility.
Euro-profile cylinder
A Euro-profile cylinder is a locking-control component in a door-lock system, with a particular external profile and operation by key or thumbturn. It is one cylinder format, not a complete door lock.
Door closer arm types and installation conditions
Standard arms, slide arms, hold-open arms and parallel-arm mounting describe different constructions or configuration relationships. When selecting a closer, confirm arm type and mounting method together with door width, weight and body model.
Door closer speed, backcheck and delayed action
Closing speed, final latching, backcheck and delayed closing act during different movement phases. They are distinct adjustments and do not mean the closer can hold the door permanently open.
Compatible door thickness
Compatible door thickness is the range of leaf thicknesses supported by a complete lock and its mounting accessories. Check it against the actual door and configuration.
Fixed dummy handle
A fixed dummy handle pushes or pulls the door leaf and does not rotate to drive a lock mechanism.
Door-lock durability testing
Durability testing checks whether a lock continues to work after repeated operation and specified loads. Test-cycle counts do not directly represent years of service.