"Easy to use - hard to outsmart"

The DOM ix HT locking system is a system with a multi-level security concept that offers a high level of protection through the interaction of many technical details. A special high-low milling (HT) in the horizontal basic profile provides additional security during profile control and is extremely difficult to copy. This quality product from DOM achieves protection against mechanical manipulation by using high-strength materials. The DOM ix HT system thus offers you the required security in burglary protection. To secure your values at home or in your company.

This system is available for reorders only.

For new systems we recommend the successor series DOM ix 6HT.


Technical characteristics:

  • high protection against manipulation by up to 21 locking authorisation queries
  • 5 spring-loaded locking elements made of special brass or hardened steel offer protection against manipulation by intelligent opening methods and impact protection on each locking side
  • up to 12 solid profile control pins in two rows (vertical and horizontal)
  • 13 mm core diameter
  • one-piece cam made of sintered steel
  • according to DIN EN 1303:2015-08
  • locking security class 4, attack resistance class B according to DIN EN 1303
  • patent protection until 2026
DOM ix HT Cylinder cross section


  • cylinder body and cylinder core made of solid brass
  • finish: dull nickel
  • reversible key system
  • horizontal key insertion
  • half cylinder: cam position adjustable in 8 positions
  • half cylinder: cam is delivered in 7.00 o'clock position, can be moved to all positions in 45 degree increments
  • compatible with DOM electronics (made possible by integrating passive transponder technology into the key bow via clip tag)


  • key thickness: 2,6 mm
  • nickel silver reversible key: corrosion-free and low-wear
  • special high-low milling (lift-out and sloped areas) for optimal key insertion
  • complex coding in the key makes it difficult to make a duplicate key (very high key copy protection)
  • with stepped deep rib
  • no key blanks available on the market
DOM ix HT Key

Operational area:

  • residences
  • apartment buildings
  • medium to large companies
  • public buildings

Options / Special equipment:

  • different cylinder finishes (polished brass, oxidized bronze)
  • increased drilling protection
  • emergency and danger function
  • freewheel
  • weather protection
  • modular design

Explanations on the optional extras:

Increased drilling and core pulling protection:

The cylinder is provided with increased drilling and core pulling protection by means of carbide pins arranged in several planes in the cylinder body and cylinder core.

Cylinder finishes:

  • finishes (polished brass, oxidized bronze)
  • standard finish: dull nickel
  • for individual design requirements
  • if desired, homogeneous appearance of door cylinder and fitting
Please note:
If a different cylinder finish, different from the standard finish, is ordered, extended production times may occur.
DOM cylinder finish
dull nickel
DOM cylinder finish
polished brass
DOM cylinder finish
oxidized bronze

Seawater resistance:

  • for use in marine climate or salty atmosphere
  • forend screw pure brass, locking nose sintered steel (chemically nickel plated)
  • cylinder finish: matt chrome
  • restrictions possible in combination with other optional equipment
  • in combination with freewheel: clutch not protected against seawater


The profile cylinders which have a freely rotating cam are designated as freewheel cylinders.
The cam can be moved freely through 360° when no key is inserted. DOM freewheel cylinders comply with DIN EN 18252:2006-12.
When the key is inserted, the spring-loaded clutch engages in the cam. This then allows the cylinder to be closed in the conventional way with the key.

  • from cylinder length: 35,5/35,5 mm
  • Usually only necessary for special panic or automatic locks. If in doubt, please check with the door manufacturer.
  • for multi-point locks with panic function: latch and bolt must be moved into the lock body when the door is closed with the handle. To ensure this, the cam must be able to turn freely.
  • in motor-driven locks and special escape door locks
  • restrictions possible in combination with other optional equipment
  • this option cannot be combined with the emergency and danger function
  • freewheel function is tested according to FZG (test guideline for profile cylinders with freewheel function for gear locks in escape door locks)

Modular design:

The modular cylinder is a profile cylinder in which the different cylinder lengths can be adjusted without great time expenditure by means of suitable intermediate parts of the respective locking system. This also protects against violent "tearing" and "pulling" on the cylinder (modular technology with increased tear-off protection).

Modular construction