Medeco 2020575 6-Pin Key-in-Knob/Lever Retrofit Cylinder for Corbin Russwin 3300 & 3400 Series

Medeco 2020575 6-Pin Key-in-Knob/Lever Retrofit Cylinder for Corbin Russwin Old Style 3300 & 3400 Series

The Medeco 2020575 is a 6-pin Key-in-Knob/Lever retrofit cylinder engineered to replace cylinders in Corbin Russwin Old Style 3300 and 3400 Series locksets, offering a seamless upgrade path without full lockset replacement. 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 performance. Constructed of durable machined brass components, it meets ANSI A156.30 Level A and ANSI A156.5 Grade 1 certifications, ensuring patent-protected key control and consistent quality for heavy-use commercial applications. Medeco M4 Key-in-Knob cylinders are UL437 listed for drill and pick resistance with utility patent-pending key control.

Key Features

• 6-Pin Cylinder Configuration: Features a 6-pin tumbler design for enhanced security and key control in commercial-grade cylindrical locksets.
• Retrofit Compatibility: Specifically designed to fit Corbin Russwin Old Style 3300 & 3400 Series locksets, enabling a direct upgrade without replacing the entire lockset.
• UL437 Listed (M4): Medeco M4 Key-in-Knob cylinders are UL437 listed for drill and pick resistance, providing verified high-security protection.
• Patent-Pending Key Control: Utility patent-pending key control technology restricts unauthorized key duplication for enhanced access management.
• Durable Machined Brass Construction: Cylinders are constructed of durable machined brass components for long-term reliability in demanding commercial environments.
• Broad Retrofit Capability: Medeco offers over 100 different cylinder designs and tailpiece configurations, supporting the most popular security hardware and minimizing full lockset replacements.
• Wide Finish Selection: 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

• 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)
• UL437 Listed — Drill and pick resistance (M4 Key-in-Knob cylinders)
• Commercial Grade

Technical Specifications

• Product Family: Key-in-Knob/Lever Cylinder
• Pinning: 6-Pin
• Compatible Hardware: Corbin Russwin Old Style 3300 & 3400 Series
• 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
• Educational Facilities
• Healthcare Institutions
• Retail Establishments
• Government and Municipal Buildings
• Industrial and Warehouse Facilities
• Multi-Tenant Residential Properties

Why Medeco?

Medeco retrofit cylinders are built from durable machined brass components and engineered to meet rigorous ANSI A156.30 Level A and ANSI A156.5 Grade 1 standards, delivering patent-protected key control and physical strength verified for heavy commercial use. With UL437 listing for drill and pick resistance on M4 cylinders and over 100 tailpiece configurations available across the Medeco lineup, the 2020575 represents a cost-effective, high-security upgrade for Corbin Russwin 3300 & 3400 Series installations without the expense of full lockset replacement.