hildebrandt locksmiths
hildebrandt locksmiths

401 Elizabeth St
Surry Hills, NSW 2000

T: 02 9212 5211
F: 02 9281 5482

Trading Hours:
Mon-Fri 8am - 5pm

24/7 Emergency Service Available

LockwoodTwin Key Systems

Effective security of your premises depends largely on control of access to keys. The Lockwood Twin high security restricted keying system achieves a very high level of key control while also providing increased physical security over basic restricted keying systems.

The Lockwood Twin® system ensures peace of mind with effective key control by employing stringent measures for the supply of key blanks patented features. Design registration of the profiles prevents unauthorised duplication. Master key systems provide security by restricting the access of each individual to only those areas they are permitted. Each individual needs only one key to enter their designated areas, improving convenience. The need for multiple keys can create confusion and key control is more difficult.

A Lockwood Twin® Master key is designed for your exclusive use. The cylinder lock , key combination and key blank are patented, so that unauthorised duplication is legally prohibited.

The key operates every Lockwood Twin lock that has been built to your unique specification.

However, it will not operate any locks other than your own, nor will any other master key open the locks you use.


Protected by Patents
High Security Keying System
Pick and Drill Protection
Colour Coded Key Inserts
Large Master Keying Capabilities


Cylinders are available for Lockwood Twin to suit both new and retro-fit installations. Cylinders are available to suit all Lockwood commercial locksets and the majority of all other commercial grade hardware installations.

Control of Keyways

The Lockwood Twin keyway is the combination of the key’s profile and its side-code.


Strong international patents protect the cylinder lock and key combination and the key blank of the Lockwood Twin product.

Patent Protection ensures exclusivity by legally barring the sale of unauthorised manufactured or imported cylinder locks, keys and key blanks.

Design Registration

The keyblank is protected from unauthorised duplication not only by patent but also by design registration of the profile.

Lockwood Twin Overview

Each Lockwood Twin key has a unique security feature: an extra set of bitting along the side of the blade – the side code – in addition to the usual top. The side code acts on side pins to line up with a side bar in the cylinder. Each key (or key set) also has a unique pattern of side grooves on the blade, forming the profile.

A key with the wrong Twin profile cannot even be inserted. A key with the wrong side code cannot release the side bar. For a key to open a lock, it must have the correct profile, side code and top code.


Side Code + Profile = Twin® Keyway

The unique combination of side code and key profile is the keyway. Supply of keys by Lockwood or one of its Lockwood Twin Dealers is under customer signature control.

Identification of Keys

Individual keys within a master key system can be easily recognised through the use of colour coded inserts. There are a total of twelve colours to choose from.

Lockwood Twin:

Patent protected;
Dual pinning mechanism;
Pick-resistant design;
Drill protection;
Powerful high security deterrent to unauthorised entry;
Key Control “from the factory floor to your door”;
Design Registration of all key profiles.
Master Keying for security and convenience.
Suits new installations.
Retrofits into most existing locks.