Scope: Uses Schlage residential bored-lock terminology and does not cover every mortice-lock recess type.
Specifications
- Category
- Dimensions and compatibility
- English term
- Bore holes
- Reading focus
- Recording existing holes
Names of the two bores
Cross bore is the main hole through the door face; edge bore or latch bore runs from the door edge to the main hole. Their functions and directions differ, so bore diameter is not a single unique dimension.
Sources: [1]
Recording existing holes
Photograph the face and edge separately, recording each hole's dimensions, centre position and any old screw holes. Have an installer inspect old holes hidden by cover plates when confirmed safe and practical.
- Number the main and edge bores separately.
- State whether holes are regular circles or have been enlarged or repaired.
- Provide backset and door thickness as well.
Using an installation template
Before drilling, obtain the template for the exact model and version, and confirm print scale and measurement datums. This article helps identify documentation, not universal drilling dimensions. A webpage diagram is not a full-scale template.
Sources
- Schlage · Parts of a door lock and door hardware terms defined
Residential door-hardware component and bore terminology; its dimensions are not generalised to all locks.
Manufacturer documents are provided in their original language.