Sargent 6G05 Grade 2 Entrance/...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$293.00
$197.05
Sargent Sargent 6 Line Series - Entrance/Office (6G05) Single Cylinder Standard Duty Knob Lock, Grade 2 SGT-6G05

Sargent 6G05 Grade 2 Entrance/Office Single Cylinder Knob Lock with 2-3/8" Backset

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Model: 28LC-6G05 OB 26D
$293.00
$197.05
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$293.00
$197.05
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Sargent 6 Line Series Grade 2 Single Cylinder Knob Lock with 2-3/8" Backset

Professional Standard Duty Cylindrical Lock Solution

The Sargent 6 Line Series delivers ANSI/BHMA Grade 2 performance in a versatile knob lock design suitable for entrance and office applications. This single cylinder lock features a standard 2-3/8" backset with accommodation for door thickness from 1-3/8" to 1-3/4", providing reliable security with UL-cUL fire rating up to 3 hours and ANSI/BHMA A156.2 Series 4000 certification for commercial applications.

Professional Features & Benefits

  • Door Compatibility: Accommodates door thickness from 1-3/8" to 1-3/4" with standard 2-3/8" backset for versatile installation options.
  • Grade 2 Durability: ANSI/BHMA A156.2 Series 4000 Grade 2 certification ensures reliable performance in standard commercial applications.
  • Fire Rating Compliance: UL-cUL fire-rated up to 3 hours for code compliance in fire-rated door assemblies.
  • Simplified Installation: Two lockbody screw design enables quick installation and easy maintenance access.
  • Versatile Configuration: Multiple latch and strike options available with broad spectrum of functions and trim combinations.
  • Anti-Microbial Option: Available with optional MicroShield® antimicrobial coating for enhanced hygiene in healthcare and food service applications.
  • Non-Handed Design: Universal handing eliminates field configuration requirements and simplifies inventory management.
  • 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 from 1-3/8" to 1-3/4", 2-3/8" backset, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and 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 using the two lockbody screw design.
  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

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

Anti-Microbial Option

Optional MicroShield® antimicrobial coating available for enhanced hygiene protection in healthcare facilities, food service areas, and other applications where microbial control is essential.

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 simplified two-screw installation design and multiple configuration options provide versatility while maintaining the quality standards expected from Sargent commercial hardware. Engineered for demanding commercial applications where dependable performance and code compliance are essential.

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:
Entrance/Office
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Knobsets
Duty Level:
Standard Duty
Product Attribute:
Cylindrical Locks
Product Function:
Entrance/Office
Door Hand Direction:
Non-Handed
Product Category:
Mechanical Locks
Department:
Door Hardware

Sargent 28LC-6G05 OB 26D – Frequently Asked Questions

1) Will the Sargent 6G05 knob lock fit a 1-3/8 inch door, or is it only for 1-3/4?
Both. The 6G05 Entrance/Office knob lock covers door thickness from 1-3/8 to 1-3/4 inches, so it goes on an older interior wood door and a standard commercial 1-3/4 inch door alike, no shim kit or spacer needed. That range is the same one you get on the Dexter C2000 entry knob and the Corbin Russwin CK4410. If you have a thicker door, 2 inches for instance, look at the Corbin Russwin CK4851, which is listed to 2 inches.
2) Do I have to order the Sargent 6G05 handed for a left or right hand door?
No handing to specify. The 6G05 is non-handed, so one part covers left and right hand openings and there is nothing to reverse in the field. For a property manager stocking spares across a building, that means one shelf item instead of two.
3) What does the Entrance/Office function on a Sargent 6G05 actually do?
Entrance/Office means the outside knob can be locked by key or by a button, and turning the inside knob always retracts the latch for free egress. It is the function you want on a tenant suite door, a private office, or a stockroom someone works inside of. If you need a door that locks from the inside only with no key outside, that is a privacy function, not this. If you never need it locked at all, a passage latch like the Corbin Russwin CK4410 or the Dexter C2000 passage knob is the cheaper prep.
4) Is a Grade 2 knob lock enough for a busy commercial entrance, or should I step up to Grade 1?
The Sargent 6G05 is a standard duty, Grade 2 commercial lock. That is the right call for office suites, tenant doors, and interior openings with normal traffic. On a high abuse opening, a main entrance, a school corridor, or a door that gets kicked, step to a Grade 1 heavy duty cylindrical lock such as the BEST 8K Series entrance knob lock or the Corbin Russwin CK4851. Going the other way, Grade 3 knobs like the Cal-Royal BER00 or the Pamex FTF Baron are light commercial and residential, below what the 6G05 is built for.
5) Can I get the Sargent 6G05 without a cylinder so my locksmith can put our own core in?
Yes. Cylinder option is either the standard 6-pin Sargent cylinder or LC, less cylinder. LC ships the lock with no cylinder so you supply and install your own, which is what most integrators and locksmiths want when a building is already keyed to an existing system. If you take LC, set Keying and Keyway to the None choice on the order, since there is no cylinder to key.
6) Can I get Sargent 6G05 knob locks keyed alike across a building, or on a master key system?
Keying is a required selection: keyed different, keyed alike, master keyed, or standard keying. Keyed alike puts every unit on one key, which is what you want for a run of like doors. Master keying gives each door its own change key under a building master. Pair that with the keyway choice: LA is Sargent's standard, and the full list runs through the C, H, L and R families plus R, S and U, so an existing Sargent system can be matched.
7) Which knob locks besides the Sargent 6G05 are rated for a fire door assembly?
Among the commercial knob locks, the Falcon W101 Grade 2 medium duty passage/closet knob lock carries a fire rating, as does the Falcon X101 Grade 1 heavy duty passage knobset with interchangeable core, which fits doors 1-3/8 inch to 2-1/4 inch. Both of those are passage function, so on a fire-rated opening that also needs to lock, the 6G05 is the keyed entrance/office choice with UL-cUL fire rating up to 3 hours.
8) What is the closest cross-brand equivalent to the Sargent 6G05 entrance/office knob lock?
The Dexter C2000 Series entry/office cylindrical ball knob lock is the closest match on function and rating: it is a Grade 2 keyed knob lock in the Entrance/Office function, fitting doors 1-3/8 inch to 1-3/4 inch, the same door thickness range the 6G05 covers. The Corbin Russwin CK4851 is another entrance/office cylindrical knob lock with a conventional cylinder, fitting doors 1-3/8 inch to 2 inch. Both are keyed knob locks like the 6G05, so an opening prepped for a bored knob lock in the entrance/office function takes any of the three.
9) I need a heavier lock than a Grade 2 knob for a high traffic entrance door - what steps up from the Sargent 6G05?
The BEST 8K Series entrance function single cylinder knob lock is a Grade 1 heavy duty knob lock in the same entrance function, where the 6G05 is Grade 2 standard duty. The Corbin Russwin CK4851 entrance/office cylindrical knob lock with conventional cylinder is also listed at Grade 1 and fits doors 1-3/8 inch to 2 inch. Both keep the bored knob format and the keyed entrance function, so the door prep concept is the same while the ANSI grade is higher.
10) The door does not need to be keyed - what do I use instead of a Sargent 6G05?
Drop to a passage or privacy function knob lock in the same bored format. The Corbin Russwin CK4410 is a Grade 2 non-keyed passage/closet cylindrical knob lock for doors 1-3/8 inch to 1-3/4 inch, and the Dexter C2000 passage ball knob is Grade 2 non-keyed over the same door range. For a bathroom or bedroom, the Dexter C2000 privacy ball knob is the Grade 2 privacy/bed/bath version. The 6G05 is the keyed single cylinder entrance/office member of that same family of bored knob functions.
11) Can a Baldwin or Emtek knob set replace a Sargent 6G05 on a commercial office door?
No - those are decorative residential knob sets in non-keyed functions. The Baldwin Estate 5000 Baltimore knob is a passage lock and the Baldwin Estate 5077 Bethpage is privacy/bed/bath; the Emtek Georgetown and Providence crystal knob sets are dummy pairs, meaning they do not latch at all. The 6G05 is a keyed single cylinder entrance/office lock rated ANSI/BHMA Grade 2 for commercial use. For a keyed commercial opening, stay with a keyed entrance function such as the BEST 8K Series entrance single cylinder knob lock.
12) I need to replace one knob lock on a floor of offices without rekeying everything. What do I order?
Order the 6G05 as LC, less cylinder, and reuse the cylinder out of the lock you are pulling if it is a Sargent conventional cylinder in your existing keyway. If the old cylinder is worn, order with a standard 6-pin cylinder instead and specify keyed alike in the keyway your building already uses. Backset must match the door's existing bore, 2-3/8 or 2-3/4, and the strike must match whatever is cut into the frame.
13) What is the difference between a keyed knob lock like the Sargent 6G05 and a dummy or passage knob?
The 6G05 is keyed, single cylinder, so it has a working latch and a key cylinder on the outside. A passage knob, like the Arrow MK01 or the Corbin Russwin CK4410, latches but never locks. A dummy, like the BEST 6K single dummy trim or the Schlage A170, is trim only, no latch and no bore for one, used on an inactive leaf or a closet door pulled shut by hand. Do not order a dummy expecting it to hold a door closed.
14) What is a lower cost alternative to a Sargent 6G05 for a light duty office door?
For entrance/office openings that do not need Grade 2, the Cal-Royal BER00 is a Grade 3 entrance/office knob lock with a Kwikset keyway, fitting doors 1-3/8 inch to 1-3/4 inch. The Pamex FTF Baron is a Grade 3 knob lockset in the entrance/office function over the same 1-3/8 inch to 1-3/4 inch door range. Both are keyed entrance/office knob locks; the 6G05 carries the higher ANSI/BHMA Grade 2 rating and Sargent keyways such as LA standard.
15) What should I use for a classroom door instead of an entrance/office knob lock?
An entrance/office function like the Sargent 6G05 lets the inside button hold the outside knob locked, which is not what a classroom opening calls for. The Dexter C2000 Series Grade 2 classroom cylindrical ball knob lock is keyed in the classroom function and fits doors 1-3/8 inch to 1-3/4 inch, the same door range the 6G05 covers. If the opening needs storeroom trim behind an exit device instead, the Imperial USA ED-BKL580 is knob trim in the storeroom function from the ED-500 Series.
16) What matches a Sargent 6G05 on the doors in the same suite that do not lock?
To keep one knob style across a suite, pair the keyed 6G05 openings with non-keyed knob locks in the same grade. The Arrow MK01 and Arrow RK01 are both Grade 2 non-keyed passage cylindrical knob locks for doors 1-3/8 inch to 1-3/4 inch, the RK01 with a ball knob. The Schlage A170 is a Grade 2 heavy duty single dummy knob trim for doors 1-3/8 inch to 1-7/8 inch, which suits an inactive leaf or a closet face that needs a knob but no latch.
17) What is an alternative to a Sargent 6G05 if I do not want to issue keys at all?
For an opening where key control is the problem rather than the lock, the Lockey 3830 is a mechanical keyless combination knob lock with an auto-locking passage function, fitting doors 1 3/16 inch to 2 inch. It replaces the cylinder and key entirely, where the 6G05 is a keyed single cylinder lock that can be ordered keyed different, keyed alike, or master keyed.
18) What finishes does the Sargent 6G05 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 commercial default and the one to pick if you are matching existing office hardware. All three are available with the standard 6-pin cylinder or as less cylinder.
19) Is there a knob lock with an antimicrobial coating for a hospital or kitchen door?
The Sargent 6 Line knob lock can be ordered with the optional MicroShield antimicrobial coating, which is aimed at healthcare and food service openings where staff want the touched surfaces treated. It is an option on the lock, not a separate model.
20) How much door prep does installing a Sargent 6 Line knob lock take?
It is a bored cylindrical lock, so it goes into a standard cross bore through the face and an edge bore for the latch, using the manufacturer's template. The lock body mounts with two screws, which keeps the install and any later service short. Confirm the door thickness is within 1-3/8 to 1-3/4 inches and that the backset you ordered matches the bore before you cut anything.
How fast can I get the Sargent 28LC-6G05 OB 26D delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
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-6G05 OB 26D come with a warranty?
Absolutely. The Sargent 28LC-6G05 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-6G05 OB 26D?
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