Exterior Cylinder Projection Thresholds: Under 2mm Security Rule
Engineering Overview: Security installation standard mandating exterior Euro cylinder projection under 2 mm beyond security handle escutcheons to prevent snapping.
Technical & Engineering Specifications
| Defeats | Pipe wrenches, mole grips, and cylinder snappers |
|---|---|
| Ideal Fitment | Completely flush with beveled security rose |
| Max Protrusion | <= 2.0 mm beyond finished exterior plate |
| Security Standard | PAS 24 / BS 3621 / TS007 Standard |
Physical Burglary Prevention Rule
In architectural hardware installation, cylinder protrusion beyond the exterior handle backplate is the #1 vulnerability exploited by lock-snappers.
Maximum Protrusion Threshold
- Security Standard: The exterior cylinder face must sit flush or protrude no more than 2.0 mm (max 3.0 mm) beyond the security escutcheon plate.
- Snapping Tool Clearance: Clamping tools require at least 4 mm to 5 mm of purchase. Keeping protrusion under 2 mm completely denies tool purchase.
Frequently Asked Engineering & Selection Questions
Q1: What is the key installation rule for this cylinder?
Security installation standard mandating exterior Euro cylinder projection under 2 mm beyond security handle escutcheons to prevent snapping.