Corbin Russwin ML2092 Grade 1 ...
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$1,655.00
$1,053.92
Corbin Russwin Corbin Russwin ML2092 Mortise Security Institution or Utility Lockset COR-ML2092-KEYED

Corbin Russwin ML2092 Grade 1 Mortise Security Institution or Utility Lockset

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Model: COR-ML2092-NSA-626
From the ML2000_Series Collection
$1,655.00
$1,053.92
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  • Corbin Russwin ADDER-CORBIN RUSSWIN-[KEYING]=KD - Keyed Different ADDER-CORBIN RUSSWIN-[KEYING]=KD - Keyed Different
  • Corbin Russwin ADDER-CORBIN RUSSWIN-[KEYING]=KA - Keyed Alike ADDER-CORBIN RUSSWIN-[KEYING]=KA - Keyed Alike

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Corbin Russwin ML2092-KEYED Security Institution & Utility Mortise Lock with Double Cylinder Keying

Grade 1 Commercial Mortise Lockset for High-Security Institutional and Utility Applications

The Corbin Russwin ML2092-KEYED is a Grade 1 Security Institution and Utility Mortise Lock from the ML2000 Series, engineered for demanding commercial, institutional, industrial, and government environments. This double-cylinder mortise lock operates the latchbolt by key from either side, with the deadbolt thrown and retracted by key either side as well, while inside and outside grips remain locked at all times. Constructed of heavy-gauge steel with a 3/4" latchbolt and 1" stainless steel deadbolt, it is designed for 1-3/4" (44mm) standard door thickness and features a field-reversible handing for flexible installation. An auxiliary latch deadlocks the latchbolt for added security, and a status indicator shows deadbolt position. Note: This function does not allow free egress and can pose a life safety hazard in the event of an emergency; installation should be in accordance with approved codes only.

Professional Features & Benefits

  • ANSI/BHMA Grade 1 mortise lock per A156.13 Series 1000, Operational and Security Grade 1
  • UL Cycle above and beyond: 14.5 Million Cycles (Verification ID: V875753)
  • Patented Quick Reversible latchbolt — reverse handing without disassembling the lock case
  • Multi-function capability: 12 functions configurable from one ML2054 lockbody
  • Heavy-gauge steel lockcase 5-7/8" x 4" x 15/16"; 1" stainless steel deadbolt, 1" throw
  • 3/4" (19mm) throw anti-friction two-piece latchbolt requires less force to close
  • Wide variety of trim designs including Muséo®, Vineyard™, Behavioral Health (BHSS/BLSS)
  • Status indicator options for locked/unlocked visibility (sectional and escutcheon trim)
  • Motorized Electric Latch Retraction (MELR) available for ML20900 series
  • Thru-bolted trim designs for proper alignment and increased security
  • Can be used with new or existing Corbin Russwin key systems; accepts most other manufacturers' cylinders
  • UL/cUL listed, UL10C positive pressure; 3-hour fire door up to 4' x 10' single or 8' x 10' pair
  • Ten-year mechanical warranty; five-year MELR; two-year electrical

Technical Specifications

  • Grade: ANSI/BHMA A156.13 Series 1000, Operational and Security Grade 1
  • Handing: Handed; quick reversible — re-handed without disassembling the lock case
  • Door Thickness: 1-3/4" (44mm) standard; optional thicknesses available
  • Backset: 2-3/4" (70mm)
  • Lockcase: Heavy-gauge steel, 5-7/8" (149mm) x 4" (102mm) x 15/16" (24mm)
  • Armored Front: Wrought brass, bronze, or stainless steel, 8" x 1-1/4"
  • Latchbolt: 2-piece mechanical with anti-friction insert, 5/8" x 1" x 3/4" (19mm) throw
  • Auxiliary Latchbolt: 9/16" (14mm) effective throw; deadlocking
  • Deadbolt: One-piece stainless steel, 19/32" x 1-1/4" x 1" (25mm) throw
  • Strike: Wrought brass, bronze, or stainless steel, ANSI straight lip, 4-7/8" x 1-1/4" x 1-1/8" lip to center
  • Cylinder: Brass, 6-pin L4 keyway, 0-bitted standard
  • Spacing: C. to c. knob/lever to cylinder: 3-5/8" (92mm); knob/lever to thumbturn: 2-7/16" (62mm)
  • Certifications: ANSI/BHMA A156.13 Grade 1; UL/cUL UL10C 3-hour positive pressure; ADA A117.1; California State Fire Marshal; Windstorm/Hurricane certified
  • Warranty: Ten-year mechanical; five-year MELR; two-year electrical

Professional Applications

  • Healthcare and Psychiatric Institutions
  • Government and Municipal Buildings
  • Educational Facilities and Schools
  • Industrial and Utility Facilities
  • Correctional and Detention Facilities
  • Commercial Office Buildings
  • Hotels and High-Use Hospitality Properties

Tamper-Resistant Design

The ML2000VR (Vandal Resistant) Series variant features vandal-resistant stainless steel escutcheons with tapered edges and Torx® pin tamper-resistant screws. When paired with Corbin Russwin patented high-security Pyramid or Access 3® cylinders, any door can become a formidable barrier to intruders, making this series ideal for high-abuse institutional environments.

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise locks deliver professional-grade reliability through heavy-gauge steel construction and a patented Quick Reversible latchbolt, with UL Cycle testing verified at 14.5 Million Cycles (Verification ID: V875753) for proven long-term performance. The ML2092-KEYED is backed by a 10 Year Limited warranty, providing lasting confidence for facility managers and security professionals. Engineered for the most demanding commercial, institutional, and government applications where dependable, high-security performance is essential.

Product Specs

Subcategory:
Mortise Locks
Product Group:
Mechanical Locks
Series:
ML2000 Series
Grade:
Grade 1
Keyed Function:
Double Cylinder
Standard Cylinder:
Conventional 6-pin, L4 Keyway, 0 Bitted Keying
Standard Strike:
ANSI straight lip standard, 4-7/8" x 1-1/4" x 1-1/8"
Warranty:
10 Year Limited
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Keyed:
Yes
Latch Throw:
3/4" Latchbolt, 1" Deadbolt
Commercial/Residential:
Commercial
Function Description:
Latchbolt by key either side. Deadbolt thrown and retracted by key either side. Auxiliary latch deadlocks latchbolt. Inside and outside grips remain locked at all times.
Lock Type:
Mortise
Lock Function:
Security Institution or Utility
Product Attribute:
Mortise Locks
Electronic:
No
Product Model:
ML2092
Collection:
ML2000_Series
Product Function:
Asylum/Institution/Utility
Door Hand Direction:
Field Reversible
Door Thickness Range:
1-3/4"
Product Category:
Mechanical Locks
Product Substrate:
Brass or Bronze
Department:
Door Hardware

Corbin Russwin COR-ML2092-NSA-626 – Frequently Asked Questions

1) How does the Corbin Russwin ML2092 actually operate, and can someone get out without a key?
The ML2092 is a security institution/utility function: the latchbolt is operated by key from either side, the deadbolt is thrown and retracted by key from either side, and both the inside and outside grips stay locked at all times. There is no free egress. That makes it a controlled-opening lock for utility rooms, mechanical spaces, and secured institutional doors, not something to put on an occupied room or an exit path unless approved codes specifically allow it.
2) Will the ML2092 mortise lock fit a standard 1-3/4 inch commercial door with a 2-3/4 inch backset prep?
Yes. The ML2092 is built for 1-3/4 inch (44mm) doors with a 2-3/4 inch (70mm) backset, which is the standard commercial mortise prep. The lock case itself measures 5-7/8 x 4 x 15/16 inches, so an existing ANSI mortise pocket takes it. Optional door thicknesses are available if your door is heavier than standard.
3) Do I have to order the ML2092 handed, or can it be reversed in the field?
Order it and re-hand it on site. The ML2092 uses the patented Quick Reversible latchbolt, so handing is changed without taking the lock case apart. Worth noting for the trim: the Dirke (DS) lever is offered as a specific left hand or right hand lever, so that choice still has to be made on the order.
4) Will the ML2092 latch into the strike that is already in my frame?
It depends on what is in the frame now. The ML2092 throws a 3/4 inch latchbolt and a 1 inch stainless deadbolt, and it ships with an ANSI straight lip strike measuring 4-7/8 x 1-1/4 inches with a 1-1/8 inch lip to center. If your frame already has a standard ANSI mortise strike prep it drops in, but the frame needs a deadbolt pocket deep enough for the full 1 inch deadbolt throw. A frame previously running a latch-only mortise function will usually need the strike box opened up.
5) Can I key the ML2092 into my building's existing Corbin Russwin master key system?
Yes. The ML2092 works with new or existing Corbin Russwin key systems, and it also accepts most other manufacturers' cylinders. Standard supply is a conventional brass 6-pin cylinder in the L4 keyway, 0-bitted. If you run interchangeable cores, order CL6 for a 6-pin LFIC less core or CL7 for a 7-pin LFIC less core; choose LC (less cylinder) if you are supplying your own. Keying is specified as KD keyed different or KA keyed alike when you want a group of doors on one key.
6) Is the Corbin Russwin ML2092 rated for a 3 hour fire door?
Yes. The ML2092 is UL/cUL listed under UL10C positive pressure for 3-hour fire doors up to 4 ft x 10 ft single or 8 ft x 10 ft pair. It is also ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1, meets ADA A117.1, and carries California State Fire Marshal and windstorm/hurricane certification. UL cycle testing is verified at 14.5 million cycles. Bear in mind the function itself blocks free egress, so it can only go on a fire door where the code official approves that arrangement.
7) What do I have to specify when ordering an ML2092 lockset?
Four things decide the part. Cylinder type: standard conventional 6-pin L4, LC less cylinder, CL6 LFIC less 6-pin core, or CL7 LFIC less 7-pin core. Keying: KD keyed different or KA keyed alike. Lever design: Armstrong, Citation, Dirke, Essex, Lustra, Newport, Princeton, or Regis. And the rose or escutcheon, either a 2-1/4 inch A rose, a 2-7/8 inch F rose, or M or N escutcheon trim. Finish runs across 14 options from 605 bright brass through 626 satin chrome, 630 satin stainless, and BSP black suede powder coat.
8) Should I use the ML2092 or a storeroom function mortise lock for a mechanical room?
For most mechanical and storage rooms a storeroom function is the right call, because the inside lever always allows egress while the outside stays locked. The ML2092 keeps both grips locked permanently and requires a key from inside, which is only appropriate for utility spaces nobody occupies or secured institutional openings under approved code. If storeroom is what you actually want, the Cal-Royal NM8080 and the Accentra 8805FL are Grade 1 storeroom mortise locksets, the NM8080 for 1-3/4 inch doors with an interchangeable core option.
9) The ML2092 does not allow free egress. What Grade 1 mortise lock should I use instead on an exit door that needs code-compliant egress?
The Corbin Russwin ML2092 keeps inside and outside grips locked at all times, so it is restricted to openings where an approved code permits that. For a door that must release from the inside, the Accentra 8805FL is a Grade 1 storeroom mortise lock, and the Sargent 7925 is a Grade 1 corridor/dormitory exit function mortise lock with rose trim and a single cylinder deadbolt. Cal-Royal's NM8080 is another Grade 1 storeroom mortise lockset with an interchangeable core option.
10) I only need a double cylinder deadbolt, not a full mortise lockset. What is the simpler alternative to the ML2092?
The ML2092 combines a 3/4 inch latchbolt with a 1 inch deadbolt in one mortise case, both keyed from either side. If you need the deadbolt alone, the Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset, the same backset the ML2092 uses. The Kaba Ilco 185 Series mortise lock is also a deadbolt function and is supplied with no handing.
11) For a behavioral health room, is the ML2092 the right choice or is there a ligature resistant option?
The ML2092 is a keyed mortise lock offered with Behavioral Health trim, but its function keeps both grips locked and does not permit free egress. Where a ligature resistant trim is the priority, the TownSteel MRX-A-01 is a Grade 1 satin stainless steel ligature resistant arch trim mortise lockset in passage function, the MRX-L-01 is the anti-ligature lever version, and the Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant and ADA compliant.
12) Do the cylinder and thumbturn holes line up with my existing mortise door prep?
The ML2092 spaces the cylinder 3-5/8 inches (92mm) center to center from the knob/lever hub, and a thumbturn position at 2-7/16 inches (62mm) from the hub. The armored front is 8 x 1-1/4 inches. Since the ML2092 is keyed both sides, you need cylinder holes on both faces, not a cylinder on one side and a turn on the other, so a door previously prepped for a thumbturn function will need the inside face reworked.
13) I need a double cylinder deadbolt only, no lever. Is the ML2092 the right part?
No. The ML2092 is a full lockset with a lever or knob trim plus both a 3/4 inch latchbolt and a 1 inch deadbolt. If you only want a keyed-both-sides deadbolt in a mortise pocket, look at the Sargent 4874 double cylinder mortise deadbolt with a 2-3/4 inch backset, which matches the same standard backset prep.
14) Is there an electrified version of this mortise lock, or do I need a different product for access control?
The ML2092 as supplied is mechanical, not electronic. Motorized Electric Latch Retraction (MELR) is offered within the ML20900 series if you need powered retraction. For card or credential control on a mortise door, the Schlage LEMD-GRW is a Grade 1 ENGAGE wireless mortise lock with a 125kHz proximity reader and a 3 hour fire rating, and the TownSteel FME-2000 is a Grade 1 RFID mortise lockset for 1-3/4 inch doors. The Command Access ML190 is a motorized mortise lock with field selectable EL/EU operation on 24VDC.
15) Will the ML2092 hold up on a psychiatric or correctional door where the hardware takes abuse?
The lock body is heavy-gauge steel with a 1 inch one-piece stainless deadbolt, verified at 14.5 million UL cycles, and the trim is thru-bolted for alignment and added security. For high-abuse openings the ML2000VR vandal resistant version adds stainless escutcheons with tapered edges and Torx pin tamper-resistant screws, and Behavioral Health trim (BHSS/BLSS) is part of the series trim range. If you need a fully anti-ligature solution instead, the TownSteel MRX-L and MRX-A Grade 1 stainless mortise locksets are built for that, though both of those listed are passage function.
16) Can I swap an electronic mortise lock in place of the keyed ML2092 for credential control?
The ML2092 is a non-electronic mechanical lock keyed from both sides with a 6-pin L4 keyway cylinder. If you want credentials instead of keys on a mortise prep, the Schlage LEMD-GRW is a Grade 1 ENGAGE wireless mortise lock with a 125kHz proximity reader and mobile enabled deadbolt, the TownSteel FME-2000 is a Grade 1 mortise lockset with RFID, and the Dormakaba E-Plex E5086 is a Grade 1 pushbutton and card mortise lock in a back to back entry/egress arrangement.
17) I need the outside lever controlled from an access control panel. Is the ML2092 the right lock?
The ML2092 is a mechanical, non-electronic lockset operated by key on both sides. For panel control of the outside lever on a 1-3/4 inch door, the Schlage L9092EU electric lock/unlock outside lever mortise lock is keyed outside with request to exit and runs on 12/24VDC, the BEST 45HW is a wired electromechanical mortise lock with 12V/24V operation, and the Command Access ML190 is a motorized mortise lock with field selectable EL/EU operation on 24VDC in storeroom function.
18) Will a Baldwin 6301 or 6310 mortise lock body drop into the same prep as the ML2092?
No. The ML2092 uses a 2-3/4 inch backset with an 8 inch by 1-1/4 inch armored front, while the Baldwin 6301 entry/apartment and 6310 entry/storeroom mortise lock bodies are 2-1/2 inch backset. Those are different case preps, so they are not interchangeable in an existing ML2000 mortise pocket.
19) What should I use instead of the ML2092 on an interior door that needs no keying at all?
The ML2092 is a keyed double cylinder lock, keyed from both sides. Where the opening needs no key, the Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock for 1-3/4 inch doors, the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation and a fire rating, and the Hager 3810S is a Grade 1 passage mortise lock with rose and 2-3/4 inch backset, matching the ML2092 backset.
20) My doors are 1-5/8 to 1-7/8 inch thick. Does the ML2092 fit, and what else would?
The ML2092 is built for 1-3/4 inch doors as standard, with optional thicknesses available on request. If you want a lock catalogued across a 1-5/8 to 1-7/8 inch range, the Alarm Lock DL3500CR and DL2700CR Trilogy electronic mortise locks are Grade 1 classroom function over that thickness range, and the DL4500 is a Grade 1 electronic mortise deadbolt over the same range.
21) Is a Schlage L0170 or an Emtek mortise entrance set a substitute for the ML2092?
No, those are not functional substitutes. The ML2092 is a keyed, double cylinder Grade 1 security institution mortise lockset with a deadbolt. The Schlage L0170 is a Grade 1 half dummy trim in dummy function, and the Emtek 3102 Memphis, 3104 Hamilton, 3106 Manhattan and 3019 Brisbane mortise entrance locksets in the dummy configuration are non-operating trim. Dummy trim has no latch or bolt operation.
22) For a classroom that needs lockdown from inside, what mortise lock takes the place of the ML2092?
The ML2092 is a security institution and utility function keyed both sides, which is not a classroom function. For classroom and intruder openings, the Cal-Royal NM8070 is a Grade 1 classroom mortise lockset with auxiliary deadlatch for 1-3/4 inch doors, the BEST 45HCA lockbody is offered in intruder function, and the TownSteel FME-4000 is a Grade 1 electronic intruder classroom mortise lockset with RFID for 1-3/4 inch doors.
23) Can I tell from the hallway whether the ML2092 deadbolt is thrown?
Yes, status indicator options are available on the ML2000 Series to show locked/unlocked position, offered on both sectional and escutcheon trim. The ML2092 itself includes a deadbolt status indicator, and an auxiliary latchbolt with a 9/16 inch effective throw deadlocks the main latchbolt against loiding.
24) What mortise lock should I use for a restroom or patient room instead of the ML2092?
The ML2092 keys from both sides and is not a privacy function. For bed, bath and restroom doors, the Cal-Royal NM8440 is a Grade 1 privacy mortise lockset with deadbolt for 1-3/4 inch doors, and the Hager 3840S is a Grade 1 privacy mortise lock with a 2-3/4 inch backset, the same backset the ML2092 uses.
25) If I need an office or entrance function on the same style of heavy mortise prep, what replaces the ML2092?
The ML2092 is a double cylinder security function with no free egress. For office and entrance openings on 1-3/4 inch doors, the Cal-Royal NM8050 is a Grade 1 office/entrance mortise lockset with auxiliary deadlatch, the Hager 3850E is a Grade 1 non-keyed office mortise lock with lever and escutcheon on a 2-3/4 inch backset, and the BEST 45H lockbody is offered in public entrance function with field reversible operation.
26) Will an Adams Rite style or glass door mortise lock work where the ML2092 is specified?
No. The ML2092 needs a wide stile prep taking a 5-7/8 by 4 by 15/16 inch steel lockcase in a 1-3/4 inch door. The Alarm Lock DL1300NW is a wireless electronic mortise lock built for Adams Rite deadlatches, and the Kaba Ilco BR Series is a glass door bottom rail lock; both are for narrow stile and glass door construction rather than the ML2000 mortise pocket.
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Does the Corbin Russwin COR-ML2092-NSA-626 come with a warranty?
Absolutely. The Corbin Russwin COR-ML2092-NSA-626 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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