ASSA 780 Cylinder lock


ASSA 780 is a cylinder (with tumbler cassette) adapted for apartment doors. Especially suitable where the master key system is used. The lock is a very good alternative to the "key tubes".


  • The lock is a cylinder lock with lever handle function, where commonly on the market standard and security cylinders can be used.
  • ASSA 780 can be compatible with an easily fitted and removable 10-tumbler cassette.
  • At 360 degree rotation with key, or 90 degree rotation with thumbturn, given 22 mm extraction of the hook bolt and automatic deadlocking.
  • To complicate the sawing the hook bolt is tempered and steeled.
  • The cassette is used as an auxiliary lock with key activation from both inside and outside.
  • Locking cassette blocks away the cylinder and the thumbturn and then becomes away-safe.
  • The lock is also home-convenient, when the cassette is unlocked, which means that the thumbturn  is used for locking and unlocking when you are staying in the residence.
  • With installed micro-switch the lock can be used with the advantage of alarms and security systems.


Standard version

  • Mortise sashlock for standard or safety cylinders.
  • Suitable for single cylinder.
  • Available for both symmetric and asymmetric ward.
  • The latch bolt is easily reversible, without disassembling.
  • The lock case is prepared for micro-switch kit. 
  • Hardened deadbolt that obstruct the cut.
  • The cassette can be easily replaced by having the external forend plate loosened.
  • Security Cassette ASSA 5680 has 10 tumblers of brass, and comes with three 10 tumbler keys; 2 x 68mm and 1 x 80 mm in length.

Special version   

  • Suitable for double cylinder.
  • Installed micro-switch on the cassette.
  • With double Installed micro-switches for alerting the safety cassette indicator of the deadbolt.
  • Key length 90 mm.

Do you want to create a safe lock environment?

ASSA OEM has created "The lock guide by ASSA OEM", and it's made to give you knowledge and tips about approved lock sets. We really encouring poeple to read our tips and guidelines here: The lock guide

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If you prefer to download our product catalogue - you can download it here
We also provide instructions, declarations and other documents in our download documents section.

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