Corbin Russwin 121K11-L4 Grade 1 1000 Series Mortise Cylinder Plug Only

Corbin Russwin 121K11-L4 1000 Series Mortise Cylinder Plug Only 1-1/8" 6-Pin L4 Keyway in Satin Chrome

Commercial-Grade Replacement Cylinder Plug for 1-1/8" Mortise Applications

The Corbin Russwin 1000 Series Mortise Cylinder Plug Only is a precision-engineered replacement component designed for commercial door hardware applications. This cylinder plug features a 1-1/8" length, a 6-pin configuration, and an L4 keyway, finished in 626 Satin Chrome for a clean, professional appearance. Specifically designed for use with 1-1/8" mortise cylinders, this plug is an ideal solution for rekeying or restoring existing Corbin Russwin mortise cylinder assemblies without replacing the entire unit.

Professional Features & Benefits

• Precise 1-1/8" Length: Engineered to the exact 1-1/8" dimension required for compatible 1-1/8" mortise cylinder housings, ensuring a proper and secure fit.
• 6-Pin Configuration: Features a 6-pin tumbler design for enhanced key control and security performance in commercial environments.
• L4 Keyway: Utilizes the L4 keyway profile for compatibility within Corbin Russwin keying systems, supporting master key and key control programs.
• 626 Satin Chrome Finish: The 626 Satin Chrome finish provides a durable, corrosion-resistant surface that complements a wide range of commercial door hardware finishes.
• Mortise Cylinder Compatibility: Designed specifically for use with 1-1/8" mortise cylinder applications, making it a direct-fit replacement component for compatible Corbin Russwin assemblies.
• Commercial-Grade Quality: Rated and designed for commercial use, delivering the reliability and longevity expected in high-traffic institutional and commercial settings.
• Cost-Effective Replacement: As a plug-only component, this part allows for targeted replacement or rekeying without the expense of a full cylinder assembly, reducing maintenance costs.

Technical Specifications

• Product Group: Parts and Accessories
• Product Subgroup: Parts and Accessories
• Product Type: Cylinder Plug
• Commercial/Residential: Commercial
• Subcategory: Parts and Accessories
• Product Function: Cylinder
• For Use With: 1-1/8" Mortise
• Cylinder Classification: Mortise
• Department: Door Hardware

Professional Applications

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

Why Choose Corbin Russwin Quality?

Corbin Russwin door hardware components are engineered to deliver professional-grade reliability in demanding commercial applications. The 1000 Series Mortise Cylinder Plug is manufactured to precise dimensional standards — including the 1-1/8" length and 6-pin configuration — ensuring consistent performance and compatibility within Corbin Russwin keying systems. Designed for commercial use, this replacement plug provides a dependable, cost-effective solution for maintaining the integrity and security of your existing mortise cylinder installations.