Medeco 11-0A21-05 Residential ...
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$43.96
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Medeco 11-0A21-05 Residential Style Thumbturn for M3 Captive Blade, Bright Brass

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Model: 11-0A21-05

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

$43.96
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Medeco 11-0A21-05 Residential Style Thumbturn for M3 Captive Blade

The Medeco 11-0A21-05 is a Residential Style Thumbturn engineered specifically for use with the Medeco M3 Captive Blade system. Finished in Bright Brass, this genuine Medeco replacement part is designed to integrate seamlessly with compatible M3 cylinder hardware, maintaining the precision and security standards that Medeco products are known for. As a factory-authorized component, it ensures proper function and fit within the M3 platform for both service and upgrade applications.

Key Features

  • M3 Captive Blade Compatibility: Engineered specifically for Medeco M3 Captive Blade cylinders, ensuring precise mechanical fit and reliable operation within the M3 system.
  • Residential Style Design: Thumbturn profile suited for residential-style installations, providing comfortable hand operation and a refined aesthetic.
  • Bright Brass Finish: Bright Brass finish delivers a classic, polished appearance that complements a wide range of door hardware and décor.
  • Genuine Medeco Replacement Part: Sourced directly as a Medeco part and accessory, guaranteeing compatibility and maintaining the integrity of the original lock installation.
  • Rose and Thumbturn Component: Classified as a Roses and Thumbturn product type, making it ideal for cylinder rose and thumbturn assembly service or replacement.
  • Commercial-Grade Quality: Rated for commercial application use, reflecting Medeco's commitment to durable, professional-grade hardware components.

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: 11-0A21-05
  • Features: Medeco Tools, Parts and Accessories

Typical Applications

  • Replacement thumbturn service on existing Medeco M3 Captive Blade cylinder installations
  • Residential-style lock hardware upgrades in commercial office environments
  • Multi-tenant residential and mixed-use properties utilizing Medeco M3 security cylinders
  • Hospitality and lodging facilities maintaining Medeco-keyed door hardware
  • Educational institutions with Medeco M3 master-key systems requiring component replacement
  • Healthcare facilities servicing existing Medeco cylinder lock hardware
  • Government and municipal buildings with Medeco high-security lock systems

Why Medeco 11-0A21-05?

Medeco is recognized for manufacturing precision security hardware, and the 11-0A21-05 thumbturn upholds that standard as a genuine factory component designed for the M3 Captive Blade system. Its commercial-grade construction and exact-fit design ensure that replacement or service work preserves the performance and security level of the original M3 installation. For facilities managers, locksmiths, and security professionals, choosing an authentic Medeco part means maintaining the full integrity of a high-security keying system.

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:
11-0A21-05
Features:
Medeco Tools, Parts and Accessories

Medeco 11-0A21-05 – Frequently Asked Questions

1) Will the Medeco 11-0A21-05 thumbturn work with a Medeco M3 cylinder?
Yes. The 11-0A21-05 is built for the Medeco M3 Captive Blade system and is intended to mate with M3 cylinder hardware. If the cylinder in your door is an M3 captive blade type, this is the matching factory thumbturn. It is not intended for non-M3 Medeco platforms.
2) What finish does the Medeco 11-0A21-05 thumbturn come in?
One finish only: 605 Bright Brass, the polished brass code. If the rest of the trim on the opening is 605, it will match. For doors finished in satin chrome or oil rubbed bronze, this piece will stand out, so plan on a different finish code for those openings.
3) Does using a Medeco thumbturn instead of an aftermarket one matter for a keyed system?
It matters for fit. The 11-0A21-05 is a factory Medeco component machined for the M3 captive blade, so the mechanical engagement with the cylinder is the one Medeco designed. An off-brand turn that does not engage the captive blade correctly can bind or fail to throw the bolt fully.
4) Is a residential style thumbturn acceptable on commercial doors?
Medeco rates the 11-0A21-05 for commercial application even though the turn profile is the residential style, which is the larger, easier to grip shape. It is commonly used on apartment and mixed use entries, hospitality guest doors, and office suites running M3 cylinders where a full commercial lever turn is not wanted.
5) I manage a building standardized on Medeco M3. Can I order this to keep spares on the shelf?
Yes, and it is a sensible spare. Thumbturns are the wear item on an M3 deadbolt, and the 11-0A21-05 is the M3 Captive Blade turn in 605 bright brass. Stock it in the finish that matches your standard trim so a maintenance tech can change one out without pulling the cylinder.
How fast can I get the Medeco 11-0A21-05 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 11-0A21-05 come with a warranty?
Absolutely. The Medeco 11-0A21-05 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 11-0A21-05?
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 11-0A21-05 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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