Corbin Russwin ML2011 Grade 1 ...
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$646.72
$378.09
Corbin Russwin ML2011 Mortise Single Cylinder Deadlock

Corbin Russwin ML2011 Grade 1 Mortise Single Cylinder Deadlock

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Model: ML2011-626
From the ML2000_Series Collection
$646.72
$378.09
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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 ML2011 Mortise Single Cylinder Deadlock with Thumbturn, Grade 1, Field Reversible

Commercial-Grade Mortise Deadlock for High-Traffic Institutional and Government Applications

The Corbin Russwin ML2011 is a Grade 1 mortise single cylinder deadlock from the ML2000 Series, engineered for demanding commercial, institutional, industrial, and government environments. This Cylinder x Thumbturn function lock allows deadbolt operation by key from the outside and by thumbturn grip from the inside, featuring a 1" stainless steel deadbolt and a 3/4" latchbolt for reliable security in a single door prep. Constructed of heavy-gauge steel with a brass or bronze substrate, the ML2011 is designed for 1-3/4" door thickness and offers field-reversible handing without disassembling the lock case. The ML2000 Series has been UL cycle tested above and beyond requirements, completing 14.5 million cycles (Verification ID: V875753), making it one of the most rigorously validated mortise lock platforms available for commercial use.

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

  • Commercial Office Buildings
  • Educational Facilities and Schools
  • Healthcare Institutions and Hospitals
  • Hotels and Hospitality Properties
  • Industrial and Warehouse Facilities
  • Government and Municipal Buildings
  • Multi-Tenant Residential and Institutional Properties

Tamper-Resistant Design

The ML2000VR (Vandal Resistant) Series option features stainless steel escutcheons with tapered edges and Torx® pin tamper-resistant screws, providing a formidable barrier against vandalism and unauthorized access attempts. When paired with Corbin Russwin's patented high-security Pyramid or Access 3® cylinders, the ML2011 delivers a comprehensive security solution for any commercial door opening.

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise locks are built to the highest commercial standards, with heavy-gauge steel construction and a brass or bronze substrate rated for Grade 1 performance and UL cycle tested to an extraordinary 14.5 million cycles (Verification ID: V875753). Backed by a 10-year limited warranty and ANSI/BHMA F11 certification, the ML2011 delivers the dependable, long-lasting performance required in offices, schools, hospitals, hotels, and other demanding high-use applications.

Product Specs

Subcategory:
Mortise Locks
Product Group:
Mechanical Locks
Series:
ML2000 Series
Grade:
Grade 1
Keyed Function:
Single 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
ANSI/BHMA:
F11
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Keyed:
Yes
Latch Throw:
3/4" Latchbolt, 1" Deadbolt
Commercial/Residential:
Commercial
Lock Type:
Mortise
Lock Function:
Cylinder x Thumbturn
Product Attribute:
Mortise Locks
Electronic:
No
Product Model:
ML2011
Collection:
ML2000_Series
Product Function:
Cylinder x Thumbturn
Door Hand Direction:
Field Reversible
Door Thickness Range:
1-3/4"
Product Substrate:
Brass or Bronze
Product Category:
Mechanical Locks
Department:
Door Hardware

Corbin Russwin ML2011-626 – Frequently Asked Questions

1) Does the ML2011 deadlock have a handing, and can I re-hand it on the job?
It ships handed but re-hands in the field. The quick reversible latchbolt lets you flip handing without pulling the lock case apart, so one lock covers a left or right hand opening and you are not stuck with the wrong part on site.
2) Will the ML2011 deadbolt throw far enough to catch my existing strike?
The deadbolt is one-piece stainless steel with a full 1 inch throw, and there is also a 3/4 inch (19mm) anti-friction latchbolt plus a 9/16 inch deadlocking auxiliary latch. The lock is supplied with an ANSI straight lip strike, 4-7/8 x 1-1/4 inches with 1-1/8 inch lip to center. If your frame already carries a standard ANSI 4-7/8 strike prep, the supplied strike lands in it; a non-ANSI or T-strike frame needs the frame prep changed.
3) What does Cylinder x Thumbturn mean on the Corbin Russwin ML2011, and is it right for an exterior door?
Key outside, thumbturn inside. The deadbolt throws and retracts by key from the exterior side and by a thumbturn grip on the interior side, so anyone inside can release the bolt without a key. That makes it a single cylinder deadlock rather than a double cylinder. If your code official or insurer requires key operation from both sides, a double cylinder deadbolt like the Sargent 4874, also a 2-3/4 inch backset mortise deadbolt, is the function to look at instead.
4) Can I key the ML2011 into the Corbin Russwin master key system already in my building?
Yes. The ML2011 works with new or existing Corbin Russwin key systems, and it also accepts most other manufacturers' cylinders if the rest of your building runs on a different brand. Standard supply is a brass conventional 6-pin cylinder in the L4 keyway, 0-bitted, so your locksmith pins it to your system. You can also order it less cylinder and fit the core you already stock.
5) Is the Corbin Russwin ML2011 approved for a fire rated door?
It is UL and cUL listed with UL10C positive pressure, rated for 3 hour fire doors up to 4 by 10 feet single or 8 by 10 feet pair. It also carries ANSI/BHMA A156.13 Series 1000 Grade 1 for both operational and security grade, ANSI/BHMA F11, ADA A117.1, California State Fire Marshal listing, and windstorm/hurricane certification. That combination is what an institutional spec on a school, hospital, or government opening usually calls for.
6) I need a mortise lock with a lever for latching and locking, not just a deadbolt. What should I order instead of the ML2011?
The ML2011 is a deadlock - it secures the door with a 1 inch deadbolt and 3/4 inch latchbolt operated by key and thumbturn, with no lever operation. For an opening that needs a lever, the Accentra 8805FL is a Grade 1 storeroom mortise lock with an Arcadia lever from the 8800 Series, and the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset for 1-3/4 inch doors with an interchangeable core option. For an office function instead of storeroom, the Cal-Royal NM8050 is a Grade 1 office/entrance mortise lockset with an auxiliary deadlatch. All three give lever operation the ML2011 does not.
7) What is the closest equivalent to a Corbin Russwin ML2011 mortise deadlock from another manufacturer?
The ML2011 is a mortise deadlock with a Cylinder x Thumbturn function - key outside, thumbturn inside. The nearest peer in the same form factor is the Sargent 4874 mortise deadbolt, which uses a 2-3/4 inch backset and a double cylinder function, meaning it takes a key on both sides rather than a thumbturn. The Kaba Ilco 185 Series mortise lock is also a deadbolt function and is supplied with no handing. If the opening needs a thumbturn on the secure side for free egress, the ML2011 function is what you are matching; if the requirement is key control from both faces, the 4874 is the double cylinder equivalent.
8) What mortise lock should I use if the door is thinner than 1-3/4 inch?
The ML2011 is built for 1-3/4 inch door thickness as standard. For a thinner door, the Alarm Lock DL2700CR and DL3500CR are Grade 1 electronic classroom mortise locks rated for 1-5/8 inch to 1-7/8 inch doors, and the Alarm Lock DL4500 Series is a Grade 1 electronic mortise deadbolt over the same 1-5/8 inch to 1-7/8 inch range - that last one is the deadbolt function closest to what the ML2011 does. On ornamental iron doors, the Marks USA 21AC and 22AC entrance double cylinder mortise locks are built for 1 inch thickness.
9) I want keypad or credential access on this opening instead of a key. What replaces the ML2011?
The ML2011 is a mechanical lock with no electronic components, keyed with a conventional 6-pin L4 keyway. For credential or code access in a mortise prep, the Dormakaba E-Plex E5086 is a Grade 1 electronic pushbutton and card mortise lock in a back to back entry/egress arrangement, the Accentra NTM623-NR nexTouch Generation 3 mortise lock uses a capacitive touchscreen keypad with cylinder override and no deadbolt, and the BEST 45HZ EZ Series is an electronic keypad mortise lock with key override. The TownSteel FME-2000 Series is a Grade 1 heavy duty RFID mortise lockset for 1-3/4 inch doors in classroom function. Note that the nexTouch NTM623-NR carries no deadbolt, so it does not reproduce the ML2011 bolt.
10) For a behavioral health or anti-ligature opening, what mortise lock goes on the door instead?
The ML2011 offers Behavioral Health trim options (BHSS/BLSS) on the ML2000 platform. If the specification calls for a dedicated anti-ligature lockset, the TownSteel MRX-L-01 is a Grade 1 heavy duty stainless steel anti-ligature lever mortise lockset in passage function for 1-3/4 inch doors, and the MRX-A-01 is the same passage function with satin stainless ligature resistant arch trim. The Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset, ligature resistant and ADA compliant in satin stainless steel. All three are passage function, so they latch without locking - use them where the ML2011's keyed bolt is not wanted.
11) The opening needs to be released or locked from an access control panel. What replaces the ML2011?
The ML2011 is a mechanical lock with no electrical option in its own right, though motorized electric latch retraction exists on the ML20900 series. For a wired opening, the Schlage L9092EU with 03A trim is a heavy duty electric lock/unlock outside lever mortise lock for 1-3/4 inch doors, keyed outside, with request to exit and 12/24VDC operation; the BEST 45HW Series is a heavy duty wired electromechanical mortise lock running 12V or 24V; and the Command Access ML190 Series is a heavy duty motorized mortise lock in storeroom function with field selectable fail safe or fail secure operation on 24VDC. The field selectable EL/EU on the ML190 matters if the fire strategy for the opening is not settled at order time.
12) I need a dormitory or corridor function where the deadbolt retracts on egress. Is the ML2011 the right lock?
The ML2011 throws and retracts its 1 inch deadbolt by key outside and thumbturn inside; it does not combine bolt operation with lever egress. For a dormitory opening, the Sargent 7925 is a Grade 1 heavy duty dormitory exit function mortise lock from the 7900 Series with rose trim and a single cylinder deadbolt, which is the corridor/dormitory function on a single lock body. Use the ML2011 where the door needs a bolt only, and the 7925 where the same door also needs latching lever operation.
13) Can I put the ML2011 on an aluminum storefront or glass door?
The ML2011 is built around a heavy-gauge steel mortise case for 1-3/4 inch doors with a 2-3/4 inch backset, which is a hollow metal and wood door prep. For aluminum openings, the Alarm Lock DL1300NW Trilogy Networx wireless electronic mortise lock with keypad is made for Adams Rite deadlatches, and the Dormakaba E-Plex 2066 Series electronic pushbutton keyless mortise lock is a wide stile product. On a glass door, the Kaba Ilco BR Series is a glass door bottom rail lock. Those are the narrow and glass stile paths; the ML2011 case is not one of them.
14) If I need Grade 1 rather than Grade 2 on a fire-rated mortise opening with credentials, which options qualify?
The ML2011 is ANSI/BHMA Grade 1 per A156.13 Series 1000 and UL10C listed for 3-hour positive pressure. Among credentialed mortise peers, the Schlage LEMD-GRW ENGAGE Series wireless mortise lock with 125kHz proximity reader is Grade 1 with a 3 hour fire rating, while the Schlage LEBMB-ADD mobile-enabled mortise lock is Grade 2 with a 3 hour fire rating, and the Dormakaba Saffire LX-I-M002 RFID mortise lockset is BHMA Grade 2. If the specification says Grade 1, the LEMD-GRW is the one of those three that meets it.
15) Our facility wants an intruder function lock on classroom doors. Does the ML2011 do that?
No. The ML2011 is a deadlock keyed outside with a thumbturn inside; it has no classroom intruder function. The BEST 45HCA Series heavy duty mortise lockbody is available with intruder function, and the TownSteel FME-4000 Series is a Grade 1 heavy duty electronic intruder classroom mortise lockset with RFID technology for 1-3/4 inch doors. Both let a teacher secure the door from inside without opening it, which is the behavior the ML2011 thumbturn does not provide on the latch.
16) Will the ML2011 mortise deadlock work on a 1-3/8 inch or a 2 inch thick door?
Standard supply is 1-3/4 inches only, and optional thicknesses are available on the ML2000 platform. If your doors run thicker, the Hager 3800 Series mortise locks cover 1-3/4 to 2-1/2 inches, and the Baldwin 6301 mortise body is listed for 1-3/4 inches and over, though both of those are locksets rather than a key-and-thumbturn deadlock.
17) What do I have to specify when ordering a Corbin Russwin ML2011 deadlock?
Three decisions. Finish: 626 satin chrome or 630 satin stainless steel. Cylinder: conventional standard cylinder supplied, or less cylinder if you are fitting your own core. Keying: keyed different is standard, or keyed alike when you want a run of locks on one key, which is the usual pick when a property manager is doing a group of storage or utility doors at once.
18) How durable is the ML2011 for a high traffic door, and what is it made of?
Heavy-gauge steel lockcase on a brass or bronze substrate, with a stainless steel deadbolt and a wrought brass, bronze, or stainless armored front measuring 8 x 1-1/4 inches. The ML2000 platform was UL cycle tested to 14.5 million cycles (Verification ID V875753), well past what the Grade 1 standard requires. For a stairwell, dock, or mechanical room seeing constant use, that is the class of lock you want.
19) Can I add a card reader or keypad to the Corbin Russwin ML2011?
No. The ML2011 is a mechanical lock with no electrified option on it, so there is nothing to wire and no credential reader. If the opening needs electronic access control on a mortise prep, look at a purpose-built electronic mortise lock: the Schlage LEMD-GRW ENGAGE wireless Grade 1 with a 125kHz proximity reader and a 3 hour fire rating, the TownSteel FME-2000 Grade 1 RFID mortise lockset for 1-3/4 inch doors, or the BEST 45HW wired electromechanical mortise lock running 12V or 24V.
20) How far apart are the cylinder and thumbturn holes on an ML2000 Series mortise prep?
Center to center from the knob or lever position to the cylinder is 3-5/8 inches (92mm), and knob or lever to the thumbturn is 2-7/16 inches (62mm). Those are the numbers to check against an existing door face prep before you commit, since a face bored to a different spacing means new trim or a new door.
21) I need matching hardware across a whole building. Can the ML2011 be standardized with other mortise functions?
Yes, and that is the practical reason to spec the ML2000 Series across a facility. Twelve functions are configurable from a single ML2054 lockbody, so a maintenance department can stock one body and cover storeroom, classroom, office, and other functions on the same prep and the same finish. The ML2011 is available in 626 satin chrome and 630 satin stainless steel, the two finishes that match most commercial openings.
22) Is a Sargent 130KB thumbturn a substitute for a Corbin Russwin ML2011?
No. The Sargent 130KB is a mortise thumbturn from the 8200 Series and the Sargent 130W is a mortise thumbturn with a round backplate from the 7800 Series - both are trim pieces that mount to a lock body, not locks in themselves. The ML2011 is a complete Grade 1 mortise deadlock with a 1 inch stainless steel deadbolt and its own lock case. If a thumbturn is all that needs replacing on an existing Sargent mortise lock, those parts fit that role; they do not secure an opening on their own.
23) Which mortise locks besides the ML2011 are field reversible?
The ML2011 is field reversible - handing is changed without disassembling the lock case. Among mortise peers, the BEST 45H Series heavy duty mortise lock body in public entrance function is field reversible, and the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation. Those two carry lever functions rather than the deadlock function the ML2011 performs, so reversibility is the shared trait, not the application.
24) The opening needs privacy for a restroom or patient room, not a keyed deadlock. What do I order?
The ML2011 is keyed from the outside with a thumbturn inside, which is entry security rather than privacy. For a privacy opening, the Cal-Royal NM8440 is a Grade 1 privacy/bed/bath mortise lockset with deadbolt for 1-3/4 inch doors, and the Hager 3840S from the 3800 Series is a Grade 1 privacy mortise lock with a 2-3/4 inch backset covering 1-3/4 inch to 2 inch doors. The Hager shares the 2-3/4 inch backset the ML2011 uses, so the door prep carries over.
25) Does an Emtek mortise entrance lockset work as a substitute for the ML2011?
No. The Emtek 3019 Brisbane, 3102 Memphis, 3104 Hamilton and 3106 Manhattan mortise entrance locksets are all dummy function - they mount trim to the door for appearance and pull, with no working bolt. The ML2011 is a Grade 1 keyed mortise deadlock with a 1 inch deadbolt. The Schlage L0170 is likewise a Grade 1 heavy duty half dummy trim for 1-3/4 inch doors, non-keyed. Dummy trim belongs on an inactive leaf; it does not secure an opening.
26) What is the difference between the ML2011 and a Schlage PM010 for a door that only needs to latch?
The Schlage PM010 is a Grade 1 passage latch mortise lock, non-keyed, for 1-3/4 inch doors - it latches the door and nothing more. The ML2011 is keyed single cylinder with a 1 inch deadbolt and a thumbturn inside. If the opening is a corridor or closet that must never lock, the PM010 or the Hager 3810S with a 2-3/4 inch backset rose trim covers it; the Hager 3810E is the same passage function with escutcheon trim over 1-3/4 inch to 2-1/2 inch doors. Choose the ML2011 only where the door must be secured.
27) Is a cylindrical lock an acceptable substitute for the ML2011?
Only if the door is being newly prepped. The ML2011 needs a mortise pocket cut into the door edge for a heavy-gauge steel case and an armored front. The Schlage PC10 is a Grade 1 passage cylindrical lock, non-keyed with rose, for 1-3/4 inch doors - it uses a bored cylindrical prep, a different hole pattern entirely. A door already mortised for the ML2011 will not accept a cylindrical lock without a filler plate, and it is passage function, so it does not secure the opening either way.
28) Which mortise lock lets me keep a Corbin Russwin key system across the building?
The ML2011 ships with a conventional 6-pin L4 keyway cylinder, 0-bitted, and works with new or existing Corbin Russwin key systems while also accepting most other manufacturers' cylinders. For matching lever openings on the same key system, the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset with an interchangeable core option, and the Accentra NTM623-NR nexTouch mortise lock includes a cylinder override, so both accept a keyed cylinder alongside their primary operation. Ordering keyed alike across the group keeps one key working the whole set.
29) Is there a battery-powered mortise lock that does not need wiring to the door?
The ML2011 is fully mechanical and needs no power at all, which is why it suits openings with no cabling. If the requirement is electronic access without pulling wire, the Dormakaba PowerPlex P2066 Series mortise lock is the self-powered option in the PowerPlex 2000 Series, and the Alarm Lock DL3500CR is a Grade 1 standalone electronic mortise lock holding 300 user codes in classroom function for 1-5/8 inch to 1-7/8 inch doors. The Alarm Lock DL4500 Series carries 2,000 user codes with a privacy keypad in deadbolt function, the closest electronic match to the bolt-only behavior of the ML2011.
30) What is a vandal resistant option on the Corbin Russwin ML2000 mortise lock?
The ML2000VR option uses stainless steel escutcheons with tapered edges and Torx pin tamper-resistant screws, aimed at openings that take abuse. Paired with Corbin Russwin's Pyramid or Access 3 high security cylinders, it covers both the trim and the key control side. Worth specifying on public restrooms, transit, detention adjacent, and street facing doors.
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Does the Corbin Russwin ML2011-626 come with a warranty?
Absolutely. The Corbin Russwin ML2011-626 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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