Heavy Duty Magnetic Morticed Deadlock - Single Action
To provide secure deadlocking of sliding doors or gates where an enhanced level of security
is necessary. This lock is specifically designed for very high use applications; typically securing internal doors and main access routes.
The 3M56 Mark 3 is a mortice hookbolt of robust construction. Twin locking laminated
and hardened hooks are used to provide positive engagement in the frame with maximum
The lock provides deadlocking operated by a unique key profile. The lock is operable from
both sides and the escutcheon is designed to allow only the correct key profile being
inserted into the lock.
Secure locking is achieved as follows:
Pass Key. Locking is achieved by inserting the pass key into the dished keyhole and rotating fully in a clockwise direction, this action
will extend the anchor bolt to expand the reinforced hooks to their fully thrown position.
Unlocking is achieved by inserting the pass key into the dished keyhole and rotating fully in an anti-clockwise direction, this action
will withdraw the anchor bolt and retract the reinforced hooks to their rest position.
Laminated and hardened hooks to resist cutting.
Reinforcing bolts to resist forced attack.
12 lever highly durable mechanism.
Low friction key journals.
Lever arrangement designed to provide extended product life.
Dedicated key profiles operates Mark 3 group of locks only.
Escutcheon designed to give positive key alignment.
Security fixings to prevent unauthorised removal.
Lock case - carbon steel electro-plated.
Anchor bolt – stainless steel and carbon steel composite.
Hook bolts – hardened steel.
Escutcheons – silica brass.
Keys – hardened steel.
Levers and springs – brass / phosphor bronze.
Suitable for external and internal use.
Specially designed forend and fascia locking plates.
Available in alternative furniture finishes on request.
Can be keyed with 3G112 Mark 3 Deadbolt.
Outer steel lock boxes for steel door applications.
Escutcheon trim plates supplied for wooden door variants as standard.
Monitored versions available with micro-switch sensing of bolt position.
Single sided version available on request.
Dimensions and Weights
Lockcase Depth(total) 171.5mm.
Lockcase Height 114.2mm.
Lockcase Width 21.0mm.
Weight (lock only) 2.1Kg.
Note - The lock is not handed, however for use on steel doors the short forend version should be ordered and for wooden
doors the long forend version. We recommend this lock is used in conjunction with a wooden door 50mm thick.