4451 - Single mortice cylinder



For use with locking devices accepting screw-in cylinders, state lock type when ordering to ensure that correct cam is supplied.


4451 Round Threaded cylinders are also available with microswitch for use as a momentary action keyswitch. See Electric Locking section for further information.

Surface treatment

  • Satin Chrome (213)
  • Polish Chrome (211)
  • Polish Brass (220)
  • Satin Brass (221)
  • Brown oxid (044)


ASSA warrants its cylinders against defective workmanship or wear under normal use and with regular maintenance.