ML20 logo

The MLAA’s latest restricted keyway, ML20 was released in October 2020. ML20 is a 6-pin inline multi-profile restricted keyway with protection via Design Registration until 2030.

Product specifications

  • Designed by the best in the industry.
  • Superior key profile design, ensures the key clamps & cuts correctly and is one of the hardest inline restricted systems to manipulate.
  • Key Profiles A, B, C & M.  M is a Master profile. M Keys will work in barrels that accept either keys A, B, C or M.
  • Keys are made of nickel silver to provide superior strength.
  • Huge range of 52 different barrels to suit almost every lock type, which gives you the ability to do commercial and residential systems.
  • Barrels come in profiles A, B, C & M+. M+ barrels are unique and will accept ALL A, B, C & M keys.
  • Barrels & keys are manufactured together to ensure the highest tolerances.
  • 10-year design registration until 2030.
  • Sales support the MLAA and the locksmith industry in Australia & New Zealand.

Learn more at supplier SG Lock & Security.


The Master Locksmiths Access Key (MLAK) is a unique and innovative system that uses a universal lock and key to allow people with disabilities to access dedicated public facilities 24 hours a day. It was developed to help increase the availability of accessible, clean and functioning public facilities for people who don’t always have the luxury of using standard facilities.

The MLAK program was released in 1994, as a joint venture between the Master Locksmiths Association of Australasia (MLAA), Pittwater council and Acrod.

The MLAK system uses an Australian-made restricted key and lock barrel that is only available from MLAA locksmiths. The system can be made to work with just about any type of locking mechanism in Australia.

The MLAK system is widely used throughout Australia. It has been installed at railway stations, accessible toilets in council facilities and in National parks, as well as adaptive playground equipment such as the Liberty Swing.

Who is Eligible?

Access to MLAK keys is restricted to persons who have a disability, or who have written authority from:

    • A doctor
    • A disability organisation
    • The Centre Management, or the owner, of a building with an MLAK-enabled facility on site

For more information:

NZ Series

NZ Series is New Zealand’s very own high-security restricted profile.

NZ Series incorporates the latest security features in mechanical restricted keying systems, with anti-bump, anti-pick and anti-drill options. The multi-broach keyway allows NZ Series systems to be used for both residential and commercial applications, from a basic restricted keyed-alike system to a complex master keyed system with multiple users and multiple locations.

An extensive range of barrels means that NZ Series can be used for just about every locking application, making it ideal for both new and retro-fit applications.

Another feature of NZ Series is the availability of both key blanks and barrels on the master profile, allowing for even more flexibility in the design of keying systems.


DC1 is a patented, high-security restricted keying system that is highly resistant to lock bumping.

Designed in Australia, with the collaboration of the Master Locksmiths Association (MLAA), it can easily be used for retrofit applications to replace existing locks to improve the level of security and to provide protection against attacks of this type in order to securely protect you and your assets.

Five reasons the DC1 system is the smart choice for your security:

  • High Security
    A unique, patented, bump-resistant system, with a pick-resistant key broach.
  • Flexibility
    DC1 offers cylinder housings to suit all major residential and commercial lock types.
  • Design Registration
    DC1 is protected by design registration in both Australian and New Zealand until 19 November 2020.
  • Exclusivity
    DC1 is only available to Business Members of the MLAA. End-users are afforded additional protection from unauthorised key duplication via the MLAA’s Code of Ethics.
  • Quality
    DC1 barrels, cylinders and components are designed in Australia to the highest standards and manufactured by World-class lock-manufacturers.

LS Series (LSGP)

LS Series is a mechanical restricted keying system the offers protection via design registration until September 2019 in both Australia and New Zealand.

LS series is designed and manufactured in Australia. It has been developed to work with the majority of residential and commercial locks available.

In many instances, existing locks can be retained, with a combination of LS series cylinders being incorporated to work with the locks that are already in place.

LS Series is one of the most cost effective restricted keying systems available.