Medeco KeyMark 100200K Standard 6-Pin Mortise Cylinder, 1-1/8" to 1-3/4", Straight Cam, 8E Keyway

Medeco KeyMark 100200K Standard 6-Pin Mortise Cylinder, 1-1/8" to 1-3/4", Straight Cam, 8E Keyway

The Medeco KeyMark 100200K is a high-security, heavy-duty 6-pin mortise cylinder engineered for commercial-grade access control. Featuring threaded exterior shell construction in brass, this cylinder is designed to screw directly into other manufacturers' mortise lock cases, with a straight cam on the back operating the lock mechanism and a set screw securing the cylinder in place. Compatible with door preparations ranging from 1-1/8" to 1-3/4", and configured with the 8E keyway, this Grade 1 cylinder delivers UL 437-listed drill and pick resistance alongside Medeco's patented KeyMark key control technology for uncompromising security in demanding commercial environments.

Key Features

• Precise Length Compatibility: Designed for door preparations from 1-1/8" to 1-3/4", accommodating a wide range of mortise lock case depths in commercial applications.
• Patented Key Control: KeyMark technology protects against unauthorized duplication of keys, requiring a special key cutting machine and access to Medeco-specific blanks available in a variety of restrictions.
• UL 437 Listed Security: Rated for resistance against drilling, picking, bumping, and other forms of physical attack, providing certified high-security performance.
• Sidebar Picking & Bump Protection: The M4-inspired sidebar mechanism prevents key rotation until the key is elevated, rotated, and aligned in the correct position, offering superior protection against bumping and picking attacks.
• 6-Pin, 8E Keyway Configuration: Precision 6-pin tumbler design with 8E keyway for enhanced key differentiation and masterkeying flexibility.
• Masterkey System Compatible: Can be masterkeyed into a system containing M4 BiLevel cylinders, supporting complex keying hierarchies for large facilities.
• Broad Hardware Retrofit Capability: Available in a wide variety of formats, retrofitting most mortise lock hardware on the market today without requiring new door preparation.
• Heavy-Duty Brass Construction: Manufactured from brass for long-lasting durability and corrosion resistance in high-traffic commercial door applications.

Certifications & Compliance

• UL 437 Listed — Drill and Pick Resistance
• BHMA Grade 1
• Heavy Duty Commercial Rating

Technical Specifications

• Product Group: Parts and Accessories
• Cylinder and Keyways: 8E Keyway, 6-Pin
• Commercial/Residential: Commercial
• Grade: Grade 1
• Duty Level: Heavy Duty
• Technology: KeyMark
• Product Model: 100200K
• Product Category: Parts and Accessories
• Product Substrate: Brass
• Department: Door Hardware

Typical Applications

• Commercial Office Buildings
• Educational Facilities and Schools
• Healthcare Institutions and Hospitals
• Government and Municipal Buildings
• Retail Establishments
• Multi-Tenant Residential and Mixed-Use Properties
• Industrial and Warehouse Facilities

Why Medeco KeyMark?

Medeco KeyMark mortise cylinders are built to the highest commercial security standards, combining UL 437-listed drill and pick resistance with patented key control technology that prevents unauthorized key duplication. Constructed from brass with a precision 6-pin, 8E keyway configuration and Grade 1 heavy-duty rating, these cylinders deliver the reliable, long-term performance that security professionals demand in critical commercial applications.