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Locks, Safes, Access Control, Master Key Systems, Security Doors & Grilles and Key Cutting Services

Locks / Master Keying

Master Keying and Master Keyed Systems Terminology

What is Master keying?

Master Keying is where a series of locks works with individual keys but is also accessible using a Master Key. A hierarchical system of locks and keys are provided giving individual access to offices or areas to authorised key holders only.

For example: The Managing Director has access to all offices but the Sales Manager may only access certain areas and be restricted from others.

Typical uses for this system are office suites, tenanted properties or other venues where individual security is required but access for cleaner / security / caretaker/manager is also required. Common cylinders can also be produced so individual users can have a key that will open a communal door but then only operate the door to their residence.

Master Keying Diagram

The above Mater Keying diagram shows...


Mul-T-Lock MT5 Platform

High Security with patented key control

Mul-T-Lock's MT5, the 5th generation patented state-of-the-art High Security cylinder platform, with built-in experience of 3 decades, features an advanced security concept that combines several powerful elements: the patented Alpha Spring located at the tip of the key, a magnetic key duplication card, and a dedicated computerized key-cutting machine - the KC5.

All combined, these features enable millions of possible combinations, extensive master-keying capabilities, keyway exclusivity for dealers, and automatic cutting of large key series.

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The MT5's breakthrough features include:


MT5 +

Mul-T-Lock High Security is even further enhanced by MT5+, an advanced version of the MT5 platform, featuring:


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Our retail & trade store offers a large selection of locking products, safes & ironmongery and includes...

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Customer Testimonials

We had our locks changed today and just wanted to say thank you for doing such a good, efficient and extremely professional job!...

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Facebook LogoTwitter LogoStapletons Lock and Safe Head Office: 75 Westgate, Worksop, Nottinghamshire, S80 1LW
Telephone: +44 (0)1909 474647 / +44 (0)1709 847337. Emergency Telephone: +44(0)1909 474647. Fax: +44 (0)1909 474226.
enquiries@stapletons-locks.co.uk / service@stapletons-locks.co.uk / sales@stapletons-locks.co.uk

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