3F65P - Morticed Mechanical Privacy Lock



To provide secure locking of swinging cell/bedroom doors with a 'privacy' locking facility under operation by the occupant.


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on the CLCS standard large mortice lock footprint with a main bolt that can be locked in the fully thrown or fully withdrawn position.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 Key Facility is also provided allowing a secondary privacy bolt to be locked or unlocked by a key operated rim cylinder lock on the outside and anti-ligature furniture on the inside. The Privacy bolt can be overridden by extending and then withdrawing the main bolt and a clutch mechanism ensures that staff remain in control. The cylinder is also master keyed to provide staff control of the privacy mechanism.

  • Locking unit - The locking unit is a self-contained 7-lever lock, independently mounted on pillars, and can be quickly removed and replaced by another such complete unit, when a change of combination is necessary. The bolt of this unit shoots downwards into a cutaway formation on the main bolt and retains it in the withdrawn or fully thrown position.
  • Main Bolt - Locking/unlocking is achieved by a partial 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.
  • Under Occupant's Key - The occupant's 'Privacy' bolt can be locked/unlocked from outside by a keyed cylinder lock or from inside by a handle or knob.


Standard Features

  • Solid Case Technology; Lock case machined from single piece carbon steel.
  • Steel main bolt, with carbide anti-cutting rollers, and 32mm throw.
  • Independent 7-lever locking mechanism.
  • Factory restricted key section.
  • Integral baffle arrangements to resist manipulation and interference via the keyhole.
  • Privacy locking via pin tumbler cylinder

Additional Features

  • External lever handle or dial knob options for staff operation.

Additional Items

  • Outer steel case (Gatebox) when fitted to a steel door
  • Locking plate (Keep)

Dimensions & Weights

Case Height207mm
Case Length226mm
Case Thickness29mm
Bolt Throw32mm
Bolt Depth45mm
Bolt Thickness22mm
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 Stee
  • Levers and springs - Brass / phosphor Bronze.



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