Medeco 11-0A21-09 Residential ...
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$43.96
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Medeco 11-0A21-09 Residential Style Thumbturn for M3 Captive Blade in Antique Brass

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Model: 11-0A21-09

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

$43.96
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Medeco 11-0A21-09 Residential Style Thumbturn for M3 Captive Blade

The Medeco 11-0A21-09 is a residential style thumbturn designed specifically for use with the Medeco M3 Captive Blade cylinder system. Finished in Antique Brass, this replacement part integrates seamlessly with compatible Medeco lock hardware, maintaining the aesthetic and functional integrity of the original installation. Engineered as a genuine Medeco part, it delivers the precise fit and reliable operation expected from professional-grade door hardware components.

Key Features

  • M3 Captive Blade Compatibility: Designed specifically for the Medeco M3 Captive Blade cylinder system, ensuring precise mechanical engagement and reliable thumbturn operation.
  • Residential Style Profile: Features a residential thumbturn form factor suited for interior door applications where a traditional aesthetic is desired.
  • Antique Brass Finish: Factory-applied Antique Brass finish coordinates with existing Medeco hardware for a consistent, polished appearance.
  • Genuine Replacement Part: Classified as an authentic Medeco replacement component, ensuring OEM-level fit and function when restoring or servicing Medeco lock assemblies.
  • Roses and Thumbturn Product Type: Engineered as part of the Medeco roses and thumbturn accessory line, providing correct geometry and interface dimensions for proper installation.
  • Professional-Grade Construction: Built to Medeco's commercial hardware standards, delivering durability appropriate for demanding door hardware applications.

Typical Applications

  • Replacement servicing of Medeco M3 Captive Blade lock assemblies
  • Commercial Office Buildings with Medeco security hardware installations
  • Multi-Tenant Residential Properties using Medeco cylinder systems
  • Healthcare and Institutional Facilities requiring OEM replacement components
  • Educational Facilities maintaining existing Medeco lock hardware
  • Government and Municipal Buildings with Medeco-specified security systems
  • Locksmith and Door Hardware Service Professionals

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: Roses and Thumbturn
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: 11-0A21-09
  • Features: Medeco Tools, Parts and Accessories

Why Medeco 11-0A21-09?

Medeco is recognized throughout the commercial door hardware industry for engineering precision lock components to exacting tolerances. The 11-0A21-09 thumbturn is a genuine Medeco replacement part, guaranteeing correct fit and interface compatibility with M3 Captive Blade cylinder assemblies without the guesswork of aftermarket alternatives. For facilities managers, locksmiths, and hardware professionals who depend on consistent, long-term performance from their security hardware, specifying an authentic Medeco component is the standard of professional practice.

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:
Roses and Thumbturn
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
11-0A21-09
Features:
Medeco Tools, Parts and Accessories

Medeco 11-0A21-09 – Frequently Asked Questions

1) Will the Medeco 11-0A21-09 thumbturn work with a Medeco M3 captive blade cylinder?
That is exactly what it's built for. The 11-0A21-09 is a residential style thumbturn made to interface with the Medeco M3 Captive Blade cylinder system, so the mechanical engagement with the blade is correct without any adapting. It is not intended for other Medeco blade types, so confirm the cylinder in the door is an M3 captive blade before ordering.
2) I'm replacing a broken thumbturn on a Medeco deadbolt in an apartment unit. Is this the whole cylinder or just the turn piece?
Just the turn piece. The 11-0A21-09 is the thumbturn itself, the part you grip on the inside face to throw the bolt. It does not include a cylinder, a bolt, or a rose. If the cylinder or the blade is also damaged, that has to be ordered separately.
3) What finish does the Medeco 11-0A21-09 thumbturn come in?
One finish only: 609 Antique Brass, applied at the factory. If the rest of the trim on the opening is antique brass, this matches; if your building standard is a satin chrome or bright brass, this is the wrong part number to order.
4) Is the 11-0A21-09 a genuine Medeco part or an aftermarket copy?
It's a genuine Medeco replacement component, catalogued by Medeco as part 11-0A21-09. For locksmiths servicing an existing M3 assembly, that matters because the interface geometry to the captive blade is the factory dimension rather than a guessed aftermarket fit.
5) It's called a residential style thumbturn. Can I still use it in a commercial building?
Yes. "Residential style" describes the form factor, a traditional turn profile suited to interior doors, not the grade of the part. Medeco classifies the 11-0A21-09 as commercial hardware, and it is used for servicing M3 assemblies in offices, multi-tenant residential, healthcare, schools and municipal buildings.
6) Can I standardize on one thumbturn part number across a building full of Medeco locks?
Only where the cylinders are M3 captive blade and the finish standard is antique brass. The 11-0A21-09 covers that combination. Openings running a different Medeco blade system, or a different finish, need a different part number, so survey the doors by blade type and finish before committing to a single number for the fleet.
How fast can I get the Medeco 11-0A21-09 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 11-0A21-09 come with a warranty?
Absolutely. The Medeco 11-0A21-09 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 11-0A21-09?
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
Why buy the Medeco 11-0A21-09 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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