MS51 entrance function lock
MS51 entrance function lock MS51 entrance function lock

60mm backset mortise entrance function lock

  • outside: key locks or unlocks outside handle; when unlocked handle withdraws latch
  • inside: free egress at all times; turn locks or unlocks outside handle


  • Heavy duty construction with Stainless Steel case, face plate, strike and latchbolt
  • Deadlatching and kick-off is standard on all functions
  • SCEC approval for Intruder Resistance
  • Exceeds Australian Lock Standards S3 for Security and D3 for Durability
  • Fire rated as per Australian Standard AS1905 Part 1 -1997, Fire Resistant Doorsets - 2 hour
  • Most functions are non-handed or field changeable/reversible
  • Supplied complete with all fixings suit door thickness from 32mm-50mm
  • Fabricator kit available to suit aluminium doors
  • Universal strike plate as standard with extended strikes also available
  • Accepts standard Australian oval cylinders
  • Rebate kit available to suit standard 13mm rebate-part #MA840 (additional cost, order separately)
  • Compatible with most electric strikes
  • Standard 60mm backset
  • Standard door mortice of 120mm x 87mm x 20mm as for other Australian mortice locks
  • Accepts tie bolt rose furniture 38-41mm fixing centres
  • Accepts 7.6mm or 8mm furniture spindle
  • satin chrome plated SC, chrome plated CP or polished brass/PVD PB finish options
cylinders, keys & furniture not included (additional cost, order separately)