3F65P - Morticed Mechanical Privacy Lock - Monitored



To provide secure locking of swinging cell/bedroom doors with a 'privacy' locking facility under operation by the occupant, from within the accommodation unit only. Locks detailed in this specification also include an integral Door In Frame Sensor (DIF) to indicate the door status when used in conjunction with a suitable DIF magnet.


The 3F65P is a mortice lock of robust construction based on the CLCS standard large mortice lock footprint with a main bolt that can be locked in the fully thrown or fully withdrawn position. Locking is achieved by a completely separate, interchangeable inner locking unit, operable from the outside only, the vertically sliding bolt of which, engages a recess in the main bolt.

A privacy facility is also provided allowing a secondary privacy bolt to be locked or unlocked by anti-ligature furniture from the inside of the accommodation. The privacy bolt can be overridden by a key holder by extending and then withdrawing the main bolt. A clutch mechanism fitted to the internal furniture ensures that staff members always remain in control of the privacy bolt.


Principal of Operation

  • Locking / Unlocking of the Main Bolt - Locking/unlocking is achieved by a partial turn of the key and handle operation to throw or withdraw the bolt. On withdrawing the key the main bolt will be automatically left locked in the position chosen (i.e. fully thrown or unlocked). Withdrawal of the main bolt will automatically withdraw the occupant's 'privacy' bolt if thrown.
  • Locking / Unlocking of the Privacy Bolt - The occupant's 'Privacy' bolt can be locked / unlocked from within the accommodation unit via the anti-ligature furniture fitted to the inside of the door. However, the door cannot be opened from the inside if the main bolt is extended and secured in frame. In addition withdrawal of the main bolt will automatically withdraw the occupant's 'privacy' bolt if thrown. A cover plate can also be fitted to the external side of the door to provide emergency access to the privacy mechanism.

Standard Features

  • Solid Case Technology; Lock case machined from single piece carbon steel.
  • 32mm throw solid steel main bolt fitted with anti-saw Tungsten Carbide rollers.
  • Independent 7-lever locking mechanism (ILU).
  • Factory restricted key section.
  • Integral baffle arrangements to resist manipulation and interference via the keyhole.
  • Status monitoring outputs of (1) Door in Frame, (2) Main Bolt Extended (3) ILU Status
  • Privacy locking / unlocking operable from within the accommodation via door mounted furniture or via override by the main bolt or by removing the external cover plate.


  • Mechanical locking mechanism tested to a minimum of 100,000 operations
  • Main bolt handle mechanism tested to a minimum of 300,000 bolt operations
  • Saw attack on the main bolt 12 hours
  • End load 13.5 kN
  • Side Load 25 kN

Additional Items

  • Handle and escutcheon kits (not supplied with the lock). Kits can be supplied to suit various functional requirements, door thicknesses and aesthetic requirements.
  • Frame mounted magnet assembly (to operate with the integral DIF sensor)
  • Locking plate with integral magnet assembly.
  • Gate Box
  • Door cable
  • Reinforcing plates for use on wooden doors
  • Privacy Cylinder for corridor side of door

Dimensions & Weights

Case Height 207mm
Case Length 226mm
Case Thickness 29mm
Bolt Throw 32mm
Bolt Depth 45mm
Bolt Thickness 22mm
Weight (lock only) 11kg



  • Lock case - carbon steel electro-plated and powder coated exterior.
  • Main bolt - carbon steel electro-plated.
  • Main bolt follower high tensile brass.
  • Keys - Hardened Steel.
  • Levers and springs - Brass / phosphor Bronze.