3K74E - BS 5 Lever BS3621:2007 Mortice Sashlock

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  • Approved by insurance companies and the police
  • For timber door hinged on the left or the right
  • Keys are suitable for use on doors up to 50mm thick


  • Deadbolt is locked or unlocked by key from either side
  • Extended 20mm deadbolt for secure positive deadlocking and resistance against attack
  • Latch bolt withdrawn by lever handle from either side
  • Force resistant, anti drill, anti-pick and anti-saw security features
  • Available with square forend and striking plate
  • 20mm bolt throw
  • Can be supplied on patented RKS key section to prevent illicit copying of keys
  • Case Size: 67mm and 80mm
  • Backset: 40mm or 53mm
  • Centres: 57mm
  • Case: Silver powder coat
  • Forend: Stainless steel or brass
  • Box Strike Assembly: Painted to match forend
  • Deadbolt: Brass, with hardened steel rollers
  • Latch Bolt: Roller bolt (non handed)
  • Follower: Sintered Iron, 8mm square
  • Keying Groups: Standard differ or to pass.  Not suitable for master keying
  • Keys supplied: Standard differ supplied with 3 keys.  For locks to pass please specify number of keys required
  • Key Blank Numbers:
    • B-K722 (standard)
    • B-K750 (RKS)
  • Cut Key: B-5LC standard
  • Rebate Kit: B-3K74R (13mm and 25mm)


  • SC - Satin Chrome finish
  • PL - Polished Brass finish


  • Tested to BS3621:2007
  • EN 1634-1 assessed for use on 60 minutes timber fire doors
Ordering Options
5 Lever Mortice Sashlock (20mm Bolt)
5 Lever Mortice Sashlock (20mm Bolt)
5 Lever Mortice Sashlock (20mm Bolt)
5 Lever Mortice Sashlock (20mm Bolt)
20 X 5 Lever Mortice Sashlocks (20mm Bolt)
20 X 5 Lever Mortice Sashlocks (20mm Bolt)
20 X 5 Lever Mortice Sashlocks (20mm Bolt)
20 X 5 Lever Mortice Sashlocks (20mm Bolt)