Sargent 6G37 Classroom Functio...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$293.00
$254.85
Sargent Sargent 6 Line Series - Classroom (6G37) Single Cylinder Standard Duty Knob Lock, Grade 2 SGT-6G37

Sargent 6G37 Classroom Function Grade 2 Single Cylinder Knob Lock with 2-3/8" Backset

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Model: 28LC-6G37 OB 26D
$293.00
$254.85
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$293.00
$254.85
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Sargent 6 Line Series Classroom Function Grade 2 Cylindrical Knob Lock with 2-3/8" Backset

Professional Standard Duty Cylindrical Lock Solution

The Sargent 6 Line Series delivers reliable classroom function security with ANSI/BHMA Grade 2 performance in a versatile cylindrical knob lock design. This single cylinder lock features a standard 2-3/8" backset with accommodation for door thickness from 1-3/8" to 1-3/4", making it suitable for most commercial door applications. The non-handed design simplifies inventory management while the 1/2" latchbolt throw provides secure latching performance with UL-cUL fire-rated certification up to 3 hours for code compliance.

Professional Features & Benefits

  • Flexible Door Compatibility: Accommodates door thickness from 1-3/8" to 1-3/4" with standard 2-3/8" backset (adjustable to 2-3/4" maximum) for versatile installation options.
  • Grade 2 Durability: ANSI/BHMA A156.2 Series 4000 Grade 2 certification ensures reliable performance for standard duty commercial applications.
  • Fire-Rated Performance: UL-cUL listed for fire-rated applications up to 3 hours, meeting critical life safety requirements.
  • Easy Installation: Installs with just two lockbody screws for simplified installation and maintenance procedures.
  • Non-Handed Design: Universal handing eliminates field confusion and reduces inventory requirements for streamlined specification.
  • Secure Latching: 1/2" latchbolt throw provides reliable latching performance for commercial security applications.
  • Antimicrobial Option: Available with optional MicroShield® antimicrobial coating for enhanced hygiene in healthcare and educational environments.
  • Manufacturer Warranty: 1-year limited warranty provides confidence and protection for commercial installations.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and/or frame surfaces.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

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

Anti-Microbial Option

Optional MicroShield® antimicrobial coating available for enhanced hygiene protection in healthcare facilities, educational institutions, and other environments where infection control is a priority. This coating helps reduce microbial growth on lock surfaces for improved sanitation.

Why Choose Sargent Quality?

Sargent 6 Line Series knob locks deliver professional-grade reliability with ANSI/BHMA Grade 2 certification and UL-cUL fire rating up to 3 hours for demanding commercial applications. The versatile design with multiple trim combinations and easy two-screw installation makes this lock ideal for projects requiring dependable performance with simplified maintenance. Backed by Sargent's 1-year limited warranty for added confidence in commercial security applications.

Product Specs

Series:
6 Line Series
Grade:
Grade 2
Keyed Function:
Single Cylinder
Subcategory:
Bored Locksets
Keyed:
Yes
Commercial/Residential:
Commercial
Handle Type:
Knob
Lock Function:
Classroom
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Knobsets
Duty Level:
Standard Duty
Product Attribute:
Cylindrical Locks
Product Function:
Classroom
Door Hand Direction:
Non-Handed
Product Category:
Mechanical Locks
Department:
Door Hardware

Sargent 28LC-6G37 OB 26D – Frequently Asked Questions

1) Will the Sargent 6G37 fit a 1-3/4 inch commercial door?
Yes. The 6 Line bored lock covers door thickness from 1-3/8 to 1-3/4 inches, so it handles both the standard 1-3/4 inch commercial door and the thinner 1-3/8 inch interior doors common in older buildings. It is non-handed, so one lock works on a left or right hand opening.
2) Can I order the Sargent 6G37 with a 2-3/4 inch backset instead of 2-3/8?
Yes, backset is a required selection and both 2-3/8 and 2-3/4 inches are offered. Those are the two standard bored-lock backsets, so measure from the door edge to the center of the 2-1/8 inch cross bore before you order.
3) What is the LC (less cylinder) option on the Sargent 6G37 and when should I choose it?
LC ships the lock without a cylinder so you can install your own, which is what you want if the building is already on a Sargent keyway and your locksmith pins and keys on site. The standard option comes with a 6-pin cylinder instead. If you take LC, the keying and keyway selections are set to None; if you take the standard cylinder, you specify a keyway and a keying method.
4) Can I get Sargent 6 Line classroom locks keyed alike or on a master key system?
Yes. Keying is a required selection and covers keyed different, keyed alike, master keying, or standard keying. Keyway choices run from LA (the standard) through the C, H, L, and R families plus R, S, and U, so an existing Sargent system in the building can be matched. Give your keying schedule and existing keyway when ordering.
5) Can I use an entrance function knob lock instead of the Sargent 6G37 classroom lock?
They behave differently at the door. The Sargent 6G37 is classroom function, where the outside knob is locked and unlocked by key from the outside only. Entrance/office locks such as the Corbin Russwin CK4851 with conventional cylinder, the Dexter C2000 entry/office ball knob in Grade 2, or the Callan Edgewood Grade 2 entrance knobset let an occupant lock the door from the inside. If the specification calls for classroom function so a room cannot be locked from within, the entrance locks are not a substitute.
6) I need a heavier duty knob lock than the Sargent 6G37 for a high traffic opening. What should I use?
The Sargent 6G37 is a standard duty Grade 2 knob lock. For heavier traffic, the BEST 8K Series entrance function single cylinder knob lock is Grade 1 heavy duty, and the Falcon X101 is a Grade 1 heavy duty cylindrical knobset with an interchangeable core covering doors 1-3/8 inch to 2-1/4 inch thick. Note that neither is classroom function, so if you need the outside knob locked and unlocked by key only, you would stay with a classroom lock.
7) What is the closest equivalent to the Sargent 6G37 classroom knob lock from another brand?
The Dexter C2000 classroom cylindrical ball knob lock is the closest match: it is a keyed Grade 2 classroom function knob lock with a 1-3/8 inch to 1-3/4 inch door thickness range, the same range the Sargent 6G37 covers. The 6G37 is also Grade 2, keyed, classroom function, and non-handed. The Dexter knob is specified as non-clutching, and the Sargent runs on Sargent keyways such as LA, CA and RA, so keying systems differ between the two.
8) Are residential keyed knobs like the Kwikset 400P a substitute for the Sargent 6G37?
They are a different class of product. The Sargent 6G37 is a commercial ANSI/BHMA Grade 2 classroom lock, UL-cUL fire listed up to 3 hours, and orderable with Sargent keyways and master keying. The Kwikset 400P-CP Polo keyed entry knob is Grade 3 entrance function for doors 1-3/8 to 1-3/4 inch, and the Cal-Royal BER00 entrance/office knob is Grade 3 with a Kwikset keyway. For a school or institutional opening on a fire door, a Grade 3 entrance knob does not cover the same requirement.
9) Sargent 6G37 or Dexter C2000 classroom knob lock, what is the difference?
Both are Grade 2 keyed classroom knob locks for 1-3/8 to 1-3/4 inch doors. The Dexter C2000 classroom knob is a non-clutching ball knob design. The Sargent 6 Line is the one to take if the building is already on a Sargent keyway or master system, since you can specify the keyway from the Sargent list or order it less cylinder.
10) How hard is it to swap an existing knob lock for a Sargent 6 Line on an already-bored door?
The 6 Line lockbody mounts with just two screws, so on a door already bored for a standard cylindrical lock it is a straightforward change out. Confirm the existing backset is 2-3/8 or 2-3/4 inches, since those are the two you can order, and match the strike to what is already cut into the frame rather than re-prepping it.
11) Is there a fire-rated alternative to the Sargent 6G37 knob lock?
Among Grade 2 cylindrical knob locks with a stated fire rating, the Falcon W101 is a medium duty Grade 2 knob lock with a 2-3/4 inch backset and a fire rating, though it is passage/closet function rather than keyed. The Falcon X101 is a Grade 1 heavy duty passage knobset with a fire rating. The Sargent 6G37 is UL-cUL listed up to 3 hours and is a keyed classroom lock, so it remains the choice when the fire door also needs key control.
12) The door does not need to be keyed. What is a simpler alternative to the Sargent 6G37?
If the opening only needs to latch, a non-keyed knob lock is simpler than the keyed classroom 6G37. The Corbin Russwin CK4410 is a Grade 2 non-keyed passage/closet knob lock for doors 1-3/8 inch to 1-3/4 inch, the Dexter C2000 passage ball knob is Grade 2 non-keyed for the same thickness range, and the Arrow MK01 is a Grade 2 non-keyed passage knob lock, also 1-3/8 inch to 1-3/4 inch.
13) I need matching trim on adjacent doors that do not get a lock. What pairs with the Sargent 6G37?
The 6G37 is a functioning keyed classroom lock, so for a closet or inactive leaf you would use dummy or passage trim instead. The Schlage A170 is a Grade 2 single dummy knob trim for doors 1-3/8 to 1-7/8 inch, the BEST 6K single dummy trim is a Grade 2 medium duty non-keyed knob, and the Schlage D10S passage latch is a Grade 1 heavy duty non-keyed knob. Knob styling and finish coverage vary by brand, so confirm appearance if the doors are in the same sightline.
14) What should I use if the door is thicker than 1-3/4 inches instead of the Sargent 6G37?
The Sargent 6G37 covers door thicknesses from 1-3/8 inch to 1-3/4 inch. For thicker doors, the Corbin Russwin CK4310 Grade 1 passage knob lock and the CK4851 entrance/office lock both cover 1-3/8 inch to 2 inch, and the Falcon X101 Grade 1 knobset covers 1-3/8 inch to 2-1/4 inch. Those are passage and entrance functions rather than classroom, so verify the function matches the opening.
15) Will a privacy knob work in place of the Sargent 6G37 on a classroom door?
No. Privacy knobs such as the Dexter C2000 privacy ball knob in Grade 2, the Pamex FTF Baron privacy knob in Grade 3, or the Cal-Royal BER20 Grade 3 privacy knob are non-keyed and lock from the inside for restrooms and bedrooms. The Sargent 6G37 is a keyed single cylinder classroom lock where the outside knob is controlled by key, which is what a classroom or tenant-controlled opening requires.
16) What finishes does the Sargent 6G37 knob lock come in?
Three: 03 bright brass with a clear coat, 10BE dark oxidized satin bronze, and 26D satin chrome over nickel. 26D is the usual match for institutional and school hardware, 10BE for dark bronze schedules. All three are available with either the standard 6-pin cylinder or the less-cylinder version.
17) Is there an antimicrobial version of the Sargent 6 Line knob lock for a healthcare facility?
Yes, MicroShield antimicrobial coating is offered as an option on the 6 Line to reduce microbial growth on the lock surfaces. It is commonly specified in hospitals, clinics, and schools where infection control drives the hardware schedule.
How fast can I get the Sargent 28LC-6G37 OB 26D delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Sargent 28LC-6G37 OB 26D come with a warranty?
Absolutely. The Sargent 28LC-6G37 OB 26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Sargent 28LC-6G37 OB 26D?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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