Mortice lock THZ90

Safely locked: You must be able to rely on the lock on your front door. The steel mortice lock is particularly robust. The electrolytic zinc coating protects against rust.
  • Mortice lock for house entrance doors tested in accordance with DIN 18251 class 3
  • Lever nut made of steel, with friction bearing to reduce wear
  • 92 mm gap between the nut and door cylinder hole

Mortice lock THZ90


One thing is certain: A front door must lock securely and withstand bad weather.

Whether at work or on holiday: You certainly don't want to constantly wonder whether your front door is really securely locked. With the use of the THZ90, these worries are a thing of the past. The mortice lock can be used for front doors with a distance measurement of 92 millimetres. Bolt and latch are made of high-quality steel. It is protected against rust by electrolytic galvanisation. The use of the lock is suitable for DIN right or DIN left doors.


  • Mortice lock conforming to DIN 18251 class 3
  • Metal latch and bolt
  • Extra corrosion protection by electrolytic galvanizing
  • High quality friction bearing steel nut

Operation and use:

  • For house entrance doors
  • When closing the door only the latch is being operated 
  • By locking the door cylinder the bolt is activated
  • Forend 20 x 280 mm (round)


  • Finish: hammer blow gold
  • Different versions for DIN right or DIN left opening doors


Mortise locks

The mortice lock is activated by the door cylinder – it may be invisible but it has a crucial function. Just as it's impossible to start an engine without a starter motor, a door cannot be locked without a mortise lock. ABUS mortise locks that meet DIN 18251 ABUS offers a wide range of mortise locks that meet DIN 18251 with solutions for a variety of needs, e.g. fire doors or doors with narrow profiles. The premium product is the TKZ 40 – ...
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