Multiplex Key Blank Broaching: Master Key Cross-Sectional Geometry
Engineering Overview: Technical guide on multi-profile multiplex key blank broaching, evaluating master pass-through flutes and departmental keyway isolation.
Technical & Engineering Specifications
| Capacity | Scales up to 50,000 unique doors |
|---|---|
| System Type | Hierarchical Multiplex Keyway Family |
| Blade Material | CuNi18Zn20 Nickel-Silver |
| Security Standard | EN 1303:2015 Key Security Grade 6 |
Master Keyway Section Engineering
In large-scale facilities, Multiplex Keyway Families partition access by varying the lateral broaching profiles of the key blade:
- Grand Master Key (Profile A): Features thinner milling grooves that allow it to enter all subsidiary keyways (Profiles B, C, D).
- Departmental Keys (Profiles B, C): Thicker ribs physically block entry into other departmental keyways, preventing unauthorized cross-department key insertion.
Frequently Asked Engineering & Selection Questions
Q1: How do multiplex keyways work?
Higher-tier master keys have thinner sectional profiles that enter all keyways, while lower change keys have thicker ribs that physically fit only their assigned lock.