Medeco 12029006-18-G3 Cylinder...
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$75.48
$65.71
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Medeco 12029006-18-G3 Cylinder Plug for Maxum Deadbolt, Captive Biaxial 6-Pin with G3 Keyway

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Model: 12029006-18-G3

In Stock (leaves warehouse same day if ordered before 3pm ET)

$75.48
$65.71
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Medeco 12029006-18-G3 Cylinder Plug for Maxum Deadbolt, Captive Biaxial 6-Pin with G3 Keyway

The Medeco 12029006-18-G3 is a precision-engineered replacement cylinder plug designed specifically for the Medeco Maxum Deadbolt. Built around Medeco's renowned Biaxial technology, this captive 6-pin plug features the restricted G3 keyway, delivering advanced key control and pick resistance that security professionals depend on. Finished in Bright Nickel, this commercial-grade cylinder plug is a genuine Medeco part engineered to restore or upgrade the high-security performance of a Maxum Deadbolt installation.

Key Features

  • Biaxial Pin Technology: Medeco's Biaxial design requires keys to rotate each pin to a precise angle as well as lift it to the correct height, providing two-dimensional key bitting that dramatically increases pick and manipulation resistance.
  • Captive Plug Design: The captive construction keeps the plug retained within the cylinder shell during installation and service, simplifying replacement and reducing the risk of component loss.
  • 6-Pin Configuration: Six-pin tumbler layout maximizes the number of unique key combinations available, supporting robust key control programs for commercial facilities.
  • Restricted G3 Keyway: The G3 keyway is a restricted, patent-protected profile that limits unauthorized key duplication, providing a critical layer of key control for high-security applications.
  • Maxum Deadbolt Compatibility: Engineered as a direct replacement plug for the Medeco Maxum Deadbolt, ensuring precise fit and full restoration of original security performance.
  • Bright Nickel Finish: The Bright Nickel finish provides a polished, professional appearance and resistance to corrosion for long-term durability.
  • Commercial-Grade Replacement Part: Classified as a genuine Medeco replacement part, this plug maintains the integrity of the Maxum Deadbolt's high-security cylinder system in demanding commercial environments.

Technical Specifications

  • Department: Door Hardware
  • Product Category: Mechanical Locks
  • Product Group: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Subgroup: Parts and Accessories
  • Product Type: Cylinder Plug
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: 12029006-18-G3
  • Features: Medeco Tools, Parts and Accessories

Typical Applications

  • Commercial Office Buildings Requiring High-Security Key Control
  • Educational Facilities with Restricted Keyway Programs
  • Healthcare Institutions Needing Controlled Access
  • Government and Municipal Buildings
  • Multi-Tenant Commercial Properties
  • Retail Establishments with Loss Prevention Requirements
  • Industrial and Warehouse Facilities with Master Key Systems

Why Medeco Maxum?

Medeco's Maxum Deadbolt cylinder plugs are built to the exacting standards that define Medeco's reputation in high-security locking systems. The Biaxial pin technology and restricted G3 keyway work in concert to deliver superior pick resistance and key control that meets the demands of professional commercial security installations. When genuine replacement parts are required, Medeco's 12029006-18-G3 ensures the Maxum Deadbolt continues to perform at the level it was originally designed and specified to achieve.

Manufacturer Resources

Product Specs

Department:
Door Hardware
Product Category:
Mechanical Locks
Product Group:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Cylinder Plug
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
12029006-18-G3
Features:
Medeco Tools, Parts and Accessories

Medeco 12029006-18-G3 – Frequently Asked Questions

1) Can a locksmith key this Medeco G3 plug to an existing Medeco master key system?
It is a 6-pin Biaxial plug cut for the restricted G3 keyway, so it can be pinned into an existing system only if that system is already on G3 and Biaxial. G3 is patent protected and restricted, which means keys and blanks come through authorized channels, not off a duplicating machine. If your building runs a different Medeco keyway, the bitting will not cross over.
2) Is the Corbin Russwin 253K66 rim cylinder plug a substitute for the Medeco 12029006-18-G3 Maxum deadbolt plug?
No. The Medeco 12029006-18-G3 is a captive Biaxial 6-pin plug built specifically for the Medeco Maxum Deadbolt, so it only drops into that cylinder and it carries the restricted G3 keyway. The Corbin Russwin 253K66 is a 3000 rim cylinder plug, meaning it is the plug for a rim cylinder body rather than for a Maxum deadbolt, and it is keyed in the Corbin Russwin profile. They are not interchangeable in the same opening; if the door has a Maxum deadbolt, the Medeco plug is the part that fits.
3) What does Medeco Biaxial pinning actually do that a standard pin tumbler plug does not?
Biaxial keys have to lift each pin to the right height and rotate it to a precise angle. That second dimension of bitting is what drives the pick and manipulation resistance, and it also multiplies the number of usable combinations, which is why a six-pin Biaxial plug supports large commercial key control programs.
4) What does captive mean on a Medeco cylinder plug, and does it change how I service the lock?
Captive means the plug stays retained in the cylinder shell during install and service rather than dropping free. For a locksmith that makes the swap cleaner, with less risk of losing springs or top pins, but it also means the plug is matched to that shell design rather than being a loose drop-in you can move between housings.
5) Is a Corbin Russwin cylinder plug a substitute for a Medeco Maxum plug?
No. Corbin Russwin plugs such as the 121K11-D2 and 121K11-L4 are 1000 Series mortise cylinder plugs, and the 253K66 is a 3000 rim cylinder plug. They belong to Corbin Russwin cylinder bodies and their own keyways, not to a Medeco Maxum deadbolt cylinder. If you need Medeco Biaxial G3 key control, the substitute has to be a Medeco part.
6) I just need to rekey my Maxum deadbolt. Do I need a new plug at all?
Not usually. A plug swap makes sense when the existing plug is damaged, worn, or you are moving the deadbolt onto a different restricted keyway. Straight rekeying within the same G3 Biaxial system is done by repinning. Buy the 12029006-18-G3 when you are restoring or converting the cylinder, not for a routine key change.
7) What is the difference between the Corbin Russwin 121K11-D2 and 121K11-L4 mortise cylinder plugs?
Both are Grade 1 1000 Series mortise cylinder plug-only parts from Corbin Russwin, so the body style and grade are the same. The difference is the keyway designation carried in the part number - D2 on one and L4 on the other. Order the one that matches the keyway your existing Corbin Russwin system is keyed to, since a plug in the wrong keyway will not accept your keys. Neither is a substitute for the Medeco 12029006-18-G3, which is a Maxum Deadbolt plug in the restricted Medeco G3 keyway.
8) I ordered a cylinder plug retainer - is that the same thing as the Medeco 12029006-18-G3?
No. The Corbin Russwin 219F88-8 is a Grade 1 cylinder plug retainer, which is the small hardware piece that holds a plug in its shell, not the plug itself. The Medeco 12029006-18-G3 is the actual keyed plug - a captive Biaxial 6-pin assembly with the G3 keyway for a Maxum Deadbolt. If your keys are worn or you are rekeying the deadbolt, you need the plug; a retainer will not change anything about how the lock is keyed.
9) For a facility standardizing on restricted key control, how does the Medeco 12029006-18-G3 compare to the Corbin Russwin plug options?
The Medeco 12029006-18-G3 uses Biaxial pin technology, where the key must both lift each pin to height and rotate it to a set angle, combined with the patent-protected G3 keyway that restricts unauthorized duplication - that combination is what supports a controlled-key program in offices, schools, healthcare and government buildings. The Corbin Russwin comparables are catalogued by their body type and grade: the 121K11-D2 and 121K11-L4 as Grade 1 1000 Series mortise cylinder plugs and the 253K66 as a 3000 rim cylinder plug. Choose based on which cylinder bodies are already installed across the facility and which keyway program you intend to run.
10) What finish does the Medeco 12029006-18-G3 Maxum plug come in?
One finish only: 618 Bright Nickel. That is the visible plug face at the key, so if the rest of the deadbolt trim on your openings is a darker bronze or brass, the face will read brighter than the surrounding hardware.
11) Is this a residential-grade part or is it meant for commercial buildings?
Medeco classes the 12029006-18-G3 as a commercial replacement part. It suits offices, schools, healthcare, government buildings, multi-tenant property, retail and warehouse sites running restricted keyway or master key programs.
How fast can I get the Medeco 12029006-18-G3 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Medeco 12029006-18-G3 come with a warranty?
Absolutely. The Medeco 12029006-18-G3 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Medeco 12029006-18-G3?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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