
MASTER KEY SYSTEMS
In-House Master Key System Design and Services
Fastest Keying in the Industry.
To ensure a facility has the desired level of security, it’s critical to have a professionally designed and maintained master key system. PDQ offers all the products and services to assist you in implementing a new master key system or modify an existing one.
- Unmatched system design capabilities
- In-house design and manufacture (Lancaster, PA)
- Professional support
- Cylinders for various security level requirements
When placing an order for a Master Key System, please submit your information by filling out the “Key Systems Forms” found at the HOT LINK below.

Specs – Key in Knob Cylinder
Default Keyway: |
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Cylinder: |
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Finishes: |
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Specs – Mortise Cylinder
Default Keyway: |
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Cylinder: |
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Finishes: |
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Specs – Rim Cylinder
Default Keyway: |
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Cylinder: |
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Architectural Finishes
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605 (US3) - Bright Brass, Clear Coated
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613 (US10B) - Oil Rubbed Bronze, Oxidized Satin Bronze, Oil Rubbed, No Coating
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625 (US26) - Bright Chromium Plated, No Coating
Compatible Keyways
Key Systems Design
Keying Chart
Proprietary Keyways
Keyway (Best SFIC Compatible) | PDQ Keyway Designator |
PDQ Exclusive | PDQ1 |
PDQ2 | |
PDQ Exclusive and Restricted | PDQ3 |
Keyway (Conventional and Schlage LFIC Compatible) | TA |
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