Sargent 13-3425 C8-1 Cylinder Barrel Plug – US15 Satin Nickel

The Sargent 13-3425 is an OEM replacement cylinder barrel (plug) designed specifically for the Sargent C8-1 cylinder — the core cylinder assembly used in the Sargent 8-Line and 9-Line series bored knob and lever locksets. When the internal barrel experiences wear in the pin chambers, keyway, or driver stack, lock operation becomes sluggish or fails entirely. Replacing the barrel plug restores smooth, factory-quality rotation without requiring removal or replacement of the entire lock chassis — a practical, cost-effective maintenance solution for facility managers and locksmiths servicing legacy institutional hardware.

Finished in US15 (Satin Nickel), the 13-3425 barrel plug maintains finish consistency with original hardware. It is available across a wide range of Sargent keyways — including L, R, H, and S keyway families — allowing replacement while preserving existing master key system hierarchy and bitting specifications. Correct keyway selection at time of order is essential to ensure drop-in compatibility and to maintain keying continuity across a facility.

Key Benefits

• Direct OEM replacement for Sargent C8-1 cylinders found in 8-Line and 9-Line series locksets
• Preserves master key system integrity — available in multiple Sargent keyway families to match existing key system bitting
• Cost-effective maintenance — restores lock operation at the component level, avoiding full lock replacement
• US15 Satin Nickel finish — matches original hardware aesthetics in corridors, classrooms, and institutional settings
• Ideal for locksmiths, facility maintenance teams, and institutional hardware managers servicing aging bored lockset inventory

Typical Applications

• Maintenance and repair of Sargent 8-Line and 9-Line knob and lever locksets in schools, hospitals, universities, and government facilities
• Component-level service calls where full lock replacement is not warranted
• Master key system preservation during hardware rehabilitation projects
• Facility-wide lock reconditioning programs on legacy Sargent bored hardware

Compatibility Note

The 13-3425 cylinder barrel plug is engineered for the Sargent C8-1 cylinder, which is the cylinder format used in Sargent 7-Line, 8-Line, and 9-Line series bored locksets (confirmed per Sargent V-10 cross-reference: VA-C8 cylinder family). It is not interchangeable with the C10-1 cylinder used in Sargent 6-Line hardware or the cylinders used in Sargent mortise or exit device product lines. Verify your existing cylinder model number before ordering. If keyway is unknown, a locksmith or key system administrator should be consulted prior to purchase to avoid keying conflicts.

Technical Details

Keyway Compatibility & Inventory Alert

The Sargent 13-3425 is a rare, limited-quantity component for legacy systems. It is currently available in the following specific keyways to support your facility's unique keying requirements:

• L-System Keyways: LA, LC, LF, LG, LK, LL
  
• R-System Keyways: RF, RG, RJ, RK, RL
  
• H-System Keyways: HA, HC, HE, HJ
  
• Independent Keyways: U, S

Note: These barrels are subject to limited stock availability. Due to the discontinued status of the Sargent 8-Line, these parts are primarily sourced for specialized repairs where a full lock replacement is not feasible.

Technical Specifications

Mechanical Utility & ANSI Security Summary

The cylinder barrel is the mechanical "heart" of a bored-in lockset, serving as the interface between the facility's security credentials and the locking chassis.

• Rotational Timing: The 13-3425 barrel ensures the plug rotates exactly within the cylinder shell, providing the smooth-operation solution required for high-frequency institutional doors.
• ANSI/BHMA Grade 1 Heritage: The 8-Line series was originally certified to ANSI/BHMA A156.2 Grade 1 standards. Replacing worn barrels with genuine Sargent OEM parts ensures the lock continues to meet these high durability and security benchmarks.
  
• Shear Line Precision: Precision-drilled pin chambers prevent "key drag" and ensure that the pins meet exactly at the shear line, acting as a reliability solution that minimizes cylinder jams.
• Master Key Integrity: In complex facilities, the keyway profile is vital. The availability of diverse Sargent keyways allows for a seamless integration solution into existing grand master key systems.

Engineered Solutions for Legacy Hardware Management

The Sargent 13-3425 provides targeted solutions for long-term facility maintenance:

• Hardware Life-Cycle Extension: Rather than a full-door retrofit, which often requires drilling or modifying the door for new lever sets, this barrel acts as a sustainability solution, extending the useful life of existing 8-Line hardware.
• Rekeying Efficiency: In the event of lost keys or security breaches, this barrel serves as a rapid rekeying solution, allowing maintenance teams to swap the plug and pins without removing the entire lock from the door.
• Aesthetic Preservation: The US15 Satin Nickel finish on the barrel face ensures a design-matching solution, blending perfectly with existing trim and providing a clean, professional appearance.
  
• Budget-Friendly Maintenance: Replacing only the internal barrel is a significant cost-saving solution, reducing the material expenditure for large-scale facility maintenance.