BS 3621 Thief Resistant Lock Assemblies: Mandatory Cylinder Criteria
Engineering Overview: Technical analysis of British Standard BS 3621, certifying complete thief-resistant mortise lock assemblies for UK domestic insurance policies.
Technical & Engineering Specifications
| Standard | British Standard BS 3621:2017 Thief Resistant Locks |
|---|---|
| Deadbolt Throw | 20 mm Hardened Steel Bolt with Anti-Saw Rollers |
| Cylinder Security | TS007 3-Star / Sold Secure Diamond |
| Insurance Compliance | Mandatory for UK Residential Insurance |
UK Domestic Insurance Standard
BS 3621 is the baseline standard required by UK home insurance companies for perimeter entrance doors.
Cylinder Requirements
- Deadlocking Bolt: Minimum 20 mm deadbolt throw with hardened steel anti-saw rollers.
- TS007 3-Star Cylinder: Must resist 5 minutes of drilling, snapping, and picking attacks.
Frequently Asked Engineering & Selection Questions
Q1: What standard or test protocol is defined here?
Technical analysis of British Standard BS 3621, certifying complete thief-resistant mortise lock assemblies for UK domestic insurance policies.