Medeco 205005 6-Pin Key-in-Knob/Lever Retrofit Cylinder for Corbin Russwin CK 4200

Medeco 205005 6-Pin Key-in-Knob/Lever Retrofit Cylinder for Corbin Russwin CK 4200 New Style

The Medeco 205005 is a 6-pin Key-in-Knob/Lever retrofit cylinder engineered specifically for the Corbin Russwin CK 4200 New Style lockset. Designed to retrofit knob-type cylindrical locksets, lever-type cylindrical locksets, padlocks, and bored-type auxiliary deadlatches and deadlocks, this cylinder delivers Medeco's renowned high-security key control and physical attack resistance. Constructed of durable machined brass components, the 205005 meets ANSI A156.30 Level A and ANSI A156.5 Grade 1 certifications, making it an ideal upgrade for demanding commercial environments where key control and security are paramount.

Key Features

• 6-Pin Cylinder Configuration: Features a 6-pin tumbler design for enhanced pick resistance and greater key combination availability in high-security commercial applications.
• UL 437 Listed: Medeco M4 Key-in-Knob cylinders are UL 437 listed for drill and pick resistance, providing verified protection against physical attack.
• Patent-Protected Key Control: Utility patent-pending key control technology restricts unauthorized key duplication, supporting strict access management programs.
• Broad Retrofit Compatibility: Designed to retrofit knob-type cylindrical locksets, lever-type cylindrical locksets, padlocks, and bored-type auxiliary deadlatches and deadlocks — minimizing the need for complete lockset replacement.
• Durable Machined Brass Construction: All cylinder components are constructed of durable machined brass for long-lasting performance in heavy-use commercial applications.
• Industry-Leading Retrofit Range: Medeco offers over 100 different cylinder designs and tailpiece configurations, providing the largest retrofit capability in the industry.
• Multiple Finish Options: Available in 14 finishes including Bright Brass (05), Satin Brass (06), Antique Brass (09), Satin Brass Blackened (10), Bright Bronze (11), Satin Bronze (12), Oil Rubbed Bronze (13), Bright Nickel (18), Satin Nickel (19), Antique Nickel (20), Black (22), Dark Bronze (24), Bright Chrome (25), and Satin Chrome (26).

Certifications & Compliance

• UL 437 Listed for Drill and Pick Resistance (Medeco M4)
• ANSI A156.30 Level A — Patent-Protected Key Control and Physical Strength (M4, M3)
• ANSI A156.5 Grade 1 — Consistent Quality for Heavy-Use Applications (M4/M4 BiLevel, M3)

Technical Specifications

• Product Family: Key-in-Knob/Lever Cylinder
• Pinning: 6-Pin
• Compatible Hardware: Corbin Russwin CK 4200 New Style
• Certification: UL 437 Listed; ANSI/BHMA A156.30 (M4); ANSI/BHMA A156.5 Grade 1 (M4)
• Construction: Durable machined brass components
• Warranty: 2-year manufacturer's warranty

Typical Applications

• Commercial Office Buildings Requiring Key Control Upgrades
• Educational Facilities with Restricted Key Access Programs
• Healthcare Institutions with Strict Access Management Requirements
• Government and Municipal Buildings
• Retail Establishments Upgrading Existing Cylindrical Locksets
• Industrial and Warehouse Facilities
• Multi-Tenant Residential and Mixed-Use Properties

Why Medeco?

Medeco retrofit cylinders are built to the highest commercial security standards, combining durable machined brass construction with UL 437-listed drill and pick resistance and ANSI A156.30 Level A certified key control. The 205005 allows facilities to upgrade the security of existing Corbin Russwin CK 4200 New Style locksets without full hardware replacement, delivering professional-grade protection and key management in a cost-effective solution.