Leading Manufacturer of Safety Interlock Switches and Machine Guard Safety Switch Devices for Automation and Process Safety

Coded Keys for Trapped Key Interlocking

Our coded keys provide over 16,000 different lock combinations, with standard coded keys available from stock. Each key is allocated with a colour, letter and number which is located on the key’s head.

Where a dustcover is present (standard or padlock-able), the keys coding will be displayed on the front surface.

There are three types of keys: standard, ejector and custom.

Standard Key: Normal key function which follows our standard key coding arrangement.

Ejector Key: Spring loaded key which ejects from the lock once turned. This prompts the operator to take the key from the lock once operated. The ejector key follows our standard key coding arrangement.

Custom Key: Custom keys provide a larger surface area on the head for additional text on the label. This is particularly useful when multiple systems are on site and quick identification of key to lock is required.

All keys are manufactured from 316 grade stainless steel suitable for all environmental conditions.


  • Custom Key Label (CK)

    Custom Key Label (CK)

    The custom label key features 80+ stocked codes and up to 16,000 unique variations. The larger surface area on the key top provides additional space for custom characters.
    • 316 grade stainless steel
    • Colour coded for quick identification
    • Robust design
    Go to Product : Custom Key Label (CK)

  • Ejector Key (EK)

    Ejector Key (EK)

    The Ejector key features 80+ stocked codes and up to 16,000 unique variations. The spring loaded barrel ejects the key out of the lock upon turning to the unlock position, prompting the user to take it.
    • 316 grade stainless steel
    • Colour coded for quick identification
    • Robust design
    Go to Product : Ejector Key (EK)

  • Standard Key (SK)

    Standard Key (SK)

    The Standard key features 80+ stocked codes and up to 16,000 unique variations. Manufactured from 316 grade stainless steel, they are suitable for all environments.
    • 316 grade stainless steel
    • Colour coded for quick identification
    • Robust design
    Go to Product : Standard Key (SK)