Dormakaba Common Mechanical Lock Parts

Dormakaba Common Mechanical lock parts are genuine replacement components shared across the Simplex mechanical pushbutton lock product family, including the Simplex 1000, 5000, L1000, 900, and related series. The word "common" in the part numbering system is specific: these are components that span multiple Simplex series rather than being unique to a single lock model. When a pushbutton wears out, a latch needs replacement, a combination change plug fails, or a spring breaks, the common mechanical parts catalog is where the correct dormakaba spare part lives. American Locksets is an authorized dormakaba dealer stocking the full common mechanical parts line with same-day shipping and free shipping on all orders over $300.

Dormakaba Simplex Mechanical Lock Parts: What They Cover and Who Needs Them

The Simplex mechanical pushbutton lock has been one of the most widely installed keyless access control locks in commercial buildings, schools, healthcare facilities, government properties, and multi-family housing in the United States for decades. The lock requires no batteries, no wiring, and no programming software. A single combination code controls access, and the code is changed on the back of the lock using the DF-59 key and the combination changes plug assembly without removing the lock from the door.

Because these locks have been in service for decades across millions of openings, there is a large installed base of Kaba Simplex and dormakaba Simplex locks that are serviceable but need specific replacement components. The dormakaba common mechanical parts catalog provides those components, sold individually and as assemblies, at a fraction of the cost of replacing the entire lock. Facilities managers, locksmiths, and building engineers who maintain these locks order from this catalog regularly.

Pushbuttons and Keypad Components

The pushbuttons are the highest-wear component on any Simplex mechanical lock. Metal pushbuttons that have been pressed tens of thousands of times over years of service develop a tactile softness or fail to spring back cleanly, which affects the lock's ability to recognize a complete button depression.

The Dormakaba 200024-109-10 Simplex Common Mechanical Series Pushbuttons, 10-Pack, Silver is the correct replacement pushbutton set across the Simplex common mechanical series. The pack of 10 covers a full lock replacement set with spares.

Latch Assemblies: Floating Face and Flat Front Configurations

The Simplex common mechanical series uses two latch formats depending on the lock model and door application. Ordering the wrong latch format produces a latch that will not seat correctly in the door edge or will misalign with the strike.

Floating Face Latch: 3-Hour Fire Rated

The Dormakaba 201144-26D-01 Common Mechanical Series Latch, 3/4 Inch Floating Face, 2-3/4 Inch Backset, 3-Hour Fire Rated, Satin Chrome is the fire-rated latch assembly for Simplex locks installed on fire-rated doors requiring A-label compliance. The floating face design adjusts to the door bevel. This latch is available in Satin Chrome (26D) and Antique Brass (05) finishes.

Flat Front Latch: Standard Installation

The Dormakaba 201605-26D-01 Simplex Common Mechanical 3/4 Inch Flat Front Latch, Satin Chrome and 201605-05-01 in Antique Brass are the flat front configuration for standard non-rated door applications. The flat front latch is the correct replacement for Simplex locks on non-fire-rated openings where a floating face is not specified.

Strike Box and ASA Strike Components

The Dormakaba 201287-000-01 Simplex Common Mechanical Series Strike Box is the replacement strike box for standard Simplex installations. Strike boxes wear out or become misaligned when door frame settling changes the latch centerline. Replacing the strike box restores clean latch engagement without replacing the lock body.

Combination Change Plug Assemblies and Code Change Components

Changing the combination on a Simplex 1000 Series lock requires the DF-59 key and the combination change plug assembly on the interior face of the lock. If the plug assembly is stripped, damaged, or the DF-59 key is lost, the combination cannot be changed without replacing this component.

The Dormakaba 201787-26D-01 Combination Change Plug Assembly with Two DF59 Keys, Satin Chrome and matching versions in Bright Brass 03 and Antique Brass 05 each include two DF59 control keys with the assembly.

The Dormakaba 201336-000-01 Combination Change Stud / Combination Change Actuator Kit is the actuator component within the combination change mechanism. When the stud fails, the combination cannot be reset even with a functional plug assembly and DF-59 key.

Passage Set Plug Assemblies: Thumb Turn and Key Turn

Simplex passage set models add a thumb turn or key turn plug on the interior that allows the lock to be held in the unlocked position without requiring the combination to be entered. These plugs are finish-matched and model-specific to passage set configurations only.

The Dormakaba 201807-26D-01 Passage Set Thumb Turn Plug Assembly, Satin Chrome and the 201807-03-01 in Bright Brass and 201807-05-01 in Antique Brass are the thumb turn version.

The Dormakaba 201818-26D-01 Passage Set Key Turn Plug Assembly, Satin Chrome, 201818-03-01 Bright Brass, and 201818-05-01 Antique Brass are the key turn versions for models where a keyed plug is specified instead of a thumbturn.

Springs, Plates, Clutch Components, and Installation Tools

Springs, plates, and clutch components are the mechanical service items that fail in high-cycle Simplex installations.

• Dormakaba 201730-000-01 Inside Lever Coil Return Spring, RH and 201732-000-01 LH: Lever return springs for high-cycle wear replacement.

• Dormakaba 201768-000-01 Double Wave Spring / Clutch Spring Kit: Clutch spring for the wave spring clutch mechanism.

• Dormakaba 201773-000-01 Outside Lever Return Spring / Stop Plate Kit, RH and 201774-000-01 LH

• Dormakaba 201780-000-01 Clutch Cover Assembly, RH and 201781-000-01 LH

• Dormakaba 201708-000-01 Clutch Backing Plate

• Dormakaba 201723-000-01 Retractor Shoe

• Dormakaba 201721-000-01 Guide Bracket

• Dormakaba 201738-000-01 Reinforcing Plate

• Dormakaba 201740-000-10 Passage Spring Clip

• Dormakaba 201733-000-01 Inside Lever Fixed Sleeve, LH / Fixed Sleeve Kit

• Dormakaba 201734-000-01 Inside Lever Fixed Sleeve Retainer Clip

• Dormakaba 201278-000-01 Installation Wrench / Spanner Wrench / Code Change Tool Kit: The spanner wrench required for both installation and combination change procedures across the Simplex common mechanical series.

Unified Trim Plates

Trim plates cover the escutcheon area around the lock on the door face. Finish-matched trim plates maintain the appearance of the installation after partial component replacement.

Standard trim plates: 26D Satin Chrome, 03 Bright Brass, 05 Antique Brass. Passage set model trim plates: 26D Satin Chrome, 03 Bright Brass, 05 Antique Brass.

Browse all Simplex Accessories, the complete Simplex L1000 Series Lever Lock product line, and all Dormakaba hardware at American Locksets. 

Frequently Asked Questions 

Q: What are dormakaba common mechanical lock parts? 

They are genuine replacement components shared across multiple Simplex mechanical pushbutton lock series, including the 1000, 5000, L1000, and 900 series, covering latches, pushbuttons, springs, clutch assemblies, trim plates, and combination change components.

Q: What is the DF-59 key used for on Simplex locks?

 The DF-59 key inserts into the combination change plug assembly on the interior of the lock to allow changing the combination code without removing the lock from the door.

Q: How do I know which latch to order for my Simplex lock? 

Check whether your lock uses a floating face latch (fire-rated doors) or flat front latch (non-rated doors) and confirm the finish. The 201144 floating face is fire-rated; the 201605 flat front is for non-rated applications.

Q: Are dormakaba common mechanical parts compatible with old Kaba Simplex and Ilco Unican locks? 

Yes. The Simplex mechanical pushbutton lock product line has been sold under the Ilco Unican, Kaba, and dormakaba names over the years. Common mechanical parts are generally compatible across generations. Confirm the series number from the lock before ordering.

Q: What does the combination change stud (201336) do? 

The combination change stud is the actuator inside the combination change mechanism that physically enables the new code to be registered. When it fails, the combination cannot be changed even with a working plug assembly.

Q: Why are trim plates sold by finish? 

Trim plates are finish-specific because replacing just one damaged plate must match the remaining installed hardware. A Satin Chrome (26D) plate does not match a Bright Brass (03) installation. Always confirm the finished code before ordering.

Q: What is the spanner wrench (201278) used for?

 The installation wrench is a specialized spanner wrench required for both initial installation and for combination change procedures on Simplex common mechanical series locks. It is not a standard tool and must be ordered separately.