Schlage Primus
Schlage Primus
| Schlage Primus | |
 | |
| Name | Schlage Primus |
|---|---|
| Manufacturer | Schlage |
| Lock Type | Cylinder |
| Lock Design | Pin-tumbler, Sidebar |
| Patent | US 4,756,177 US 4,815,307 |
| Related Locks | |
| Schlage Everest Schlage Primus Everest | |
The Primus (or Classic Primus, Primus XP) is a pin-tumbler lock made by Schlage. It uses six pin-tumblers and a sidebar that requires finger pins to be raised and rotated properly. The Primus is functionally identical to the ASSA Twin Combi lock, but it does not include as many anti-lockpicking and key control mechanisms.
The Primus is an updated version of the Schlage Everest. The Schlage Everest Primus is an alternate version of the Primus that enhances key control capabilities.
Principles of operation
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The Schlage Primus key.
The Primus sidebar.
Sidebar pins properly aligned.
Sidebar pins rotated by the key.
Key security levels
The Primus offers a variety of key security levels:
- Level 1 - Commercially Exclusive
- Distributors sell to end users via commercial locksmiths. All Level 1 keys have the same sidebar bitting code.[1]
- Level 1+ - Wholesaler/Locksmith Exclusive
- Locksmiths resell exclusive wholesaler sidebar bittings. Keys are stamped with unique locksmith ID numbers.
- Level 2 - Contract Hardware Dealer Exclusive
- Exclusivity limited to contract hardware dealers who sell directly to end users.
- Level 3 - End User Exclusive
- Exclusivity based on random assignment or the first 2 digits of a zip code.
- Level 4 - End User Exclusive
- Exclusivity based on time zone or nation.
Disassembly instructions
The Schlage Primus is disassembled in the same way as a traditional pin-tumbler cylinder. Care is taken to account for the sidebar and finger pins. Finger pins are spring biased outwards when the plug is exposed without a key inserted.
- Remove the cam or C-clip.
- Insert the key and turn the plug 45-90 degrees.
- Withdraw the plug from the cylinder. (A plug follower is recommended)
OR
- Remove the chamber casings and take out each pin-stack individually
- Remove the cam or C-clip.
- Withdraw the plug from the cylinder.
Vulnerabilities
Notes
- Key bumping is possible only with a bump key that has the correct sidebar code.
Gallery
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References
- ↑ Schlage. Primus Levels at a Glance.
