Sargent 24-6G05 OB Office Knob Lockset – 6 Line Commercial Cylindrical Lock

The Sargent 24-6G05 OB is a Grade 1 commercial cylindrical knob lockset from Sargent's respected 6 Line series, configured for office function — one of the most widely specified lock functions in commercial construction and facilities management. Designed for interior office doors in schools, corporate campuses, healthcare facilities, and government buildings, this lockset delivers the security and durability demanded by high-traffic commercial openings.

Office Function — What It Does

The office function (ANSI/BHMA F84) lockset keeps the latch bolt retracted or locked from the outside by key, while the inside knob always allows free egress. The outside knob is locked by a key and remains locked until unlocked by another key turn — it does not require the key to be held in place. This function is ideal for private offices, administrative spaces, and secure interior rooms where controlled access is needed without the inconvenience of push-button locking.

• Outside knob: Always locked; key required for entry
• Inside knob: Always free for egress — no key required to exit
• Typical use: Private offices, administrative areas, professional workspaces

Sargent 6 Line — Commercial-Grade Performance

The Sargent 6 Line cylindrical lockset series is a long-standing commercial standard built to ANSI/BHMA Grade 1 requirements — the highest duty rating for door hardware. The G05 knob (also referenced as the B Knob in Sargent's catalog) is a classic, smooth commercial knob profile suitable for institutional and commercial applications. The OB finish (Oil Rubbed Bronze) provides an aesthetically warm, dark tone popular in hospitality, historic renovation, and upscale office interiors.

Key Benefits

• ANSI/BHMA Grade 1 heavy-duty cylindrical lockset — built for commercial openings
• Office (F84) function — controlled outside access with unrestricted egress from inside
• Sargent 6 Line series — widely recognized, field-proven commercial platform
• G05 / B Knob profile — traditional commercial knob form factor
• OB finish (Oil Rubbed Bronze) — dark, warm finish for architectural compatibility
• Compatible with Sargent V-10 (ASSA) cylinders — VA-C10 cylinder application
• Suitable for fire-rated door assemblies (verify with AHJ and door assembly listing)

Applications

• Corporate and government office interiors
• School and university administrative offices
• Healthcare facility private offices and consultation rooms
• Hotel back-of-house and management offices
• Historic renovation and upscale commercial interiors requiring OB finish

Technical Details

For applications requiring a lever-handle ADA-compliant alternative, or for comparable products from Corbin Russwin, Hager, or PDQ in a similar office function and finish, contact DoorwaysPlus for a no-obligation quote on alternative specifications.

The Sargent 24-6G05 OB is a professional-grade Grade 2 Cylindrical Classroom Knob Lockset engineered for reliability in medium-traffic educational and commercial environments. As a cornerstone of the Sargent 6-Line Series, this lockset is designed for doors where key-controlled security is paramount. The 24-prefix indicates this unit is UL Listed for 3-hour fire doors and #808 ANSI Strike, making it the industry standard for commercial hollow metal frames.

Professional Classroom Security (ANSI F84)

The 05 Classroom Function (often categorized with the G37 logic in the 6-Line series) provides administrative personnel with total control over corridor access while prioritizing life safety.

• Keyed Exterior Control: The outside knob is locked or unlocked exclusively by a physical key. This ensures that unauthorized individuals cannot change the locking status of the door from the corridor.
  
• Fail-Safe Interior Egress: The inside knob is always free for immediate exit. Occupants can never be locked inside the room, ensuring 100% compliance with NFPA 101 Life Safety codes.
  
• Deadlocking Protection: Features a deadlocking latchbolt that prevents "shimming" or unauthorized manipulation with tools when the door is closed.
  
• Classic OB Design: The OB Ball Knob offers a timeless architectural profile with a comfortable, ergonomic grip that has been a standard in institutional hardware for decades.

Built for Institutional Durability

The Sargent 6-Line is recognized as a "standard duty" lock that performs with institutional strength, offering a cost-effective alternative to Grade 1 hardware without sacrificing security.

• Exceeds Grade 2 Standards: Certified to ANSI/BHMA A156.2 Series 4000 Grade 2, this series is tested for hundreds of thousands of cycles to ensure long-term service in schools and offices.
  
• Corrosion-Resistant Chassis: The internal mechanism is constructed of high-strength steel with zinc dichromate plating, protecting the lock from internal rust and environmental wear.
  
• Fire-Rated Integrity: With the 24-prefix, this lockset is UL/cUL Listed for use on 3-hour fire-rated doors, making it a code-compliant choice for commercial hallways.
  
• Sargent LA Keyway: Supplied with the industry-standard 6-pin LA Keyway cylinder, allowing for seamless integration into existing facility master key systems.

Technical Specifications

Why Choose the Sargent 24-6G05 OB?

For contractors and facility managers, the Sargent 24-6G05 OB represents a high-value security investment. It provides the durability required for K-12 classrooms and municipal offices while maintaining a classic aesthetic. By utilizing the 6-Line Series, you ensure a professional installation that meets all fire and safety codes at a competitive price point.

Ideal Applications:

• K-12 Classrooms: Giving teachers secure control over corridor access.
• Municipal Offices: Professional aesthetics with Grade 2 durability for public buildings.
• Training Rooms: Ensuring sensitive areas are keyed but always safe for emergency exit.
• Commercial Storage: A fire-rated, keyed solution for administrative corridors.