Union RKS is a high security lock that uses a restricted-key duplication system, this provides a very high level of security protection.


  • 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


  • 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
  • Can be supplied with either a single or double pole micro switch for alarm systems
  • Supplied with one plain escutcheon and one escutcheon with a cover plate, finished to match the face plate / strike
  • Case Size: 67mm
  • Back set:  40mm
  • Case: Silver powder coat
  • Forend: Stainless steel
  • Box Strike Assembly: Painted to match forend
  • Deadbolt:  Brass, with hardened steel rollers
  • 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 Number:
  • B-K722 (standard)
  • B-K750 (RKS)
  • Cut Key Number: B-5LC standard
  • Rebate Kit: B-3G114R (13mm, 19mm and 25mm)

The Solution for fast & easy opening when no keys are present:

Union lock picking – 5 lever mortice decoder