Metal 4-Digit Auto-Scramble Mechanical Lock (Public / Private)
The Metal 4-Digit Auto-Scramble Mechanical Lock is a robust, keyless locker lock designed for both shared-use and individually assigned lockers. Offering Public or Private operating modes, it provides a versatile mechanical locking solution for workplaces, schools, gyms, aquatic centres, leisure facilities and other high-use locker environments.
Automatic Code Scrambling
A key feature of this lock is its automatic scramble function. After operation, the visible combination dials automatically return to 0-0-0-0, helping prevent a user's combination from being left visible for the next person to see.
Unlike standard mechanical combination locks where users need to manually scramble the number wheels after use, the auto-scramble function provides an additional level of privacy and makes the lock particularly well suited to busy shared locker environments.
Public & Private Modes
Public Mode
Ideal for shared or day-use lockers. Users select their own temporary 4-digit combination when securing the locker. After the locker is reopened, it is ready for a new combination to be selected by the next user.
Private Mode
Designed for lockers allocated to an individual user. The same 4-digit combination remains assigned for ongoing use until deliberately changed.
Easy Facility Management
For facility managers, a master key allows forgotten combinations to be retrieved and provides management access when required, helping minimise lockouts and ongoing maintenance.
With durable all-metal construction and completely mechanical operation, the lock requires no batteries, wiring, software or external power.
Key Features
- 4-digit mechanical combination operation
- Automatic dial scrambling to 0-0-0-0
- Helps prevent combinations being left visible after use
- Public or Private operating modes
- Master key combination retrieval
- Management override access
- Durable all-metal construction
- No batteries, wiring or external power required
- Powder-coated finish
- Suitable for metal, timber, glass and plastic locker doors
- Suitable for door thicknesses from approximately 0.6mm to 20mm
- Available in 20.5mm and 30.5mm function lengths
Colour Options: Black - other colours available on request
Operation: 4-Digit Mechanical Combination
Modes: Public / Private
Material: Zinc Alloy / Brass / Steel
Finish: Powder Coated
Function Length: 20.5mm / 30.5mm
- Lock Type: Mechanical Lock / Combination Lock / Auto Scramble
- Environment: Indoors
- Suitability: Metal Lockers, Plastic Lockers, Laminate Lockers





