Corbin Russwin ML2002 Grade 1 ...
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$630.78
$265.75
Corbin Russwin Corbin Russwin ML2002 Classroom Intruder - Mortise Lockbody Only COR-ML2002-LL

Corbin Russwin ML2002 Grade 1 Classroom Intruder - Mortise Lockbody Only

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Model: COR-ML2002-LL-626
From the ML2000_Series Collection
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$630.78
$265.75
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Corbin Russwin ML2002-LL Classroom Intruder Mortise Lockbody with Field Reversible Handing

Grade 1 Commercial Mortise Lock for Classroom Intruder Security

The Corbin Russwin ML2002-LL is a Grade 1 Classroom Intruder mortise lockbody engineered for high-traffic commercial, institutional, industrial, and government applications. Constructed of heavy-gauge steel, this lockbody features a patented Quick Reversible latchbolt and a 1" stainless steel deadbolt, designed for 1-3/4" (44mm) door thickness with field-reversible handing. The included ANSI straight lip strike measures 4-7/8" (124mm) x 1-1/4" (32mm) x 1-1/8" (29mm) lip to center, providing a complete and code-compliant installation solution for schools, hospitals, offices, and other demanding environments.

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

  • K-12 Schools and Educational Facilities
  • College and University Campus Buildings
  • Healthcare Institutions and Hospitals
  • Commercial Office Buildings
  • Government and Municipal Buildings
  • Hotels and Hospitality Properties
  • Industrial and Institutional Facilities

Tamper-Resistant Design

The ML2000VR (Vandal Resistant) Series option 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 equipped with this lockbody becomes a formidable barrier against intruders, making it especially well-suited for classroom security applications.

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise locks deliver professional-grade reliability with heavy-gauge steel construction and a 1" stainless steel deadbolt, rated for an extraordinary 14.5 Million Cycles in UL testing (Verification ID: V875753). Backed by a 10 Year Limited warranty and featuring the patented Quick Reversible latchbolt, the ML2002-LL is engineered for demanding commercial applications where dependable classroom security and long-term performance are essential.

Product Specs

Subcategory:
Mortise Locks
Product Group:
Mechanical Locks
Series:
ML2000 Series
Grade:
Grade 1
Keyed Function:
Non-Keyed
Standard Latch:
3/4" Latchbolt
Standard Strike:
ANSI straight lip standard, 4-7/8" x 1-1/4" x 1-1/8"
Warranty:
10 Year Limited
Product Subgroup:
Mortise Lock Bodies
Product Type:
Mortise Lockbody Only
Keyed:
No
Commercial/Residential:
Commercial
Function Description:
Mortise Lockbody Only
Lock Type:
Mortise
Lock Function:
Classroom Intruder
Product Attribute:
Mortise Locks
Electronic:
No
Product Model:
ML2002
Collection:
ML2000_Series
Product Function:
Classroom
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-ML2002-LL-626 – Frequently Asked Questions

1) Does the Corbin Russwin ML2002 come with the lever trim and cylinder, or just the lock body?
Just the lock case. The ML2002 is a mortise lockbody only, so trim (lever or knob, roses or escutcheons) and the cylinder are separate line items you add to the order. The ANSI straight lip strike, 4-7/8 x 1-1/4 x 1-1/8 inches lip to center, ships with the body. Budget for trim and a 6-pin L4 keyway cylinder, or your own keyway, when you price the opening.
2) What does the Classroom Intruder function on the ML2002 actually do at the door?
Classroom Intruder means the door can be secured from inside the room without opening it, which is what a lockdown procedure requires. The lock carries a 1 inch stainless steel deadbolt with a 1 inch throw alongside the 3/4 inch anti-friction latchbolt, so the door deadlocks rather than just latching. It is the function a K-12 or campus specifier asks for by name when retrofitting classroom doors.
3) Will the ML2002 mortise lock fit a 1-3/8 inch door?
Not as standard. The ML2002 is built for 1-3/4 inch (44mm) doors, which is the normal commercial thickness. Corbin Russwin offers optional thicknesses on the ML2000 Series, so a thicker or thinner door has to be specified at order time rather than adapted in the field. If your openings are older 1-3/8 inch interior doors, confirm the thickness option before you commit.
4) Do I have to order the ML2002 lock body left or right handed?
No. Handing on the ML2002 is field reversible. The patented Quick Reversible latchbolt lets you flip the hand without taking the lock case apart, so one part number covers both hands on the job. For a property manager stocking spares across a building, that means one lockbody on the shelf instead of two.
5) Will the ML2002 mortise lock latch into the strike that is already in my frame?
Depends on what is in the frame now. The ML2002 throws a 3/4 inch (19mm) latchbolt plus a 9/16 inch auxiliary deadlocking latch, and a 1 inch deadbolt, so the frame needs deadbolt prep as well as latch prep. The supplied ANSI straight lip strike is 4-7/8 x 1-1/4 inches with a 1-1/8 inch lip to center. A frame already prepped for an ANSI mortise strike takes it directly; a frame cut only for a cylindrical latch does not.
6) What backset and lock case pocket does the ML2002 need in the door?
Backset is 2-3/4 inches (70mm), the standard commercial mortise backset. The steel lock case measures 5-7/8 x 4 x 15/16 inches, and the armored front is 8 x 1-1/4 inches. Spacing runs 3-5/8 inches center to center from knob or lever to cylinder and 2-7/16 inches from knob or lever to thumbturn. Those are the numbers that decide whether the ML2002 drops into an existing mortise pocket or needs a new one cut.
7) Do I have to rekey my building to a Corbin Russwin keyway to use this mortise lock?
No. The ML2000 Series body works with new or existing Corbin Russwin key systems and accepts most other manufacturers' cylinders, so an existing masterkey system can usually stay in place. The lockbody itself ships non-keyed, with the cylinder ordered separately; the Corbin Russwin standard is a brass 6-pin L4 keyway, 0-bitted.
8) What is the Accentra equivalent of the Corbin Russwin ML2002 mortise lockbody?
The closest equivalent is the Accentra 8800FL Series mortise lock body, which is also a Grade 1 mortise lock body with field reversible handing. The Corbin Russwin ML2002 is likewise a Grade 1 mortise lockbody with field reversible handing, supplied as a lockbody only in the ML2000 Series. Both are lock cases sold without trim, so lever or knob trim, roses or escutcheons, and a cylinder are specified separately either way. The functional difference to confirm before you swap is the function itself: the ML2002 is a Classroom Intruder function, so if the opening needs classroom intruder operation you need to confirm the Accentra body is ordered in a matching function rather than assuming the series substitutes straight across.
9) Can I use an Accentra 8800FL lock body to replace a Corbin Russwin ML2002 in the same door prep?
Treat it as a prep-dependent swap, not a drop-in. Both are Grade 1 mortise lock bodies with field reversible handing, so either can be re-handed in the field for whichever way the door swings. But a mortise body is only interchangeable when the case size, backset, and armored front match the mortise pocket already cut in the door, and the trim spacing has to line up with the existing lever and cylinder holes. The ML2002 case is 5-7/8 inch x 4 inch x 15/16 inch on a 2-3/4 inch backset with an 8 inch x 1-1/4 inch armored front, and its center-to-center spacing is 3-5/8 inch lever to cylinder and 2-7/16 inch lever to thumbturn. Measure the existing pocket and hole spacing against those numbers before committing to either body.
10) Is a mortise lock like the ML2002 worth it over a cylindrical lock for a school corridor door?
For a classroom security opening, yes, and the reason is the deadbolt. A mortise body like the ML2002 carries a 1 inch stainless deadbolt plus a separate latchbolt in one case, so the door can be positively secured; a cylindrical lock has no deadbolt. It is a heavy-gauge steel case tested to 14.5 million cycles in UL testing, which is why it goes in high-traffic institutional corridors. The cost is prep: the door has to be mortised for a 5-7/8 x 4 x 15/16 inch case at a 2-3/4 inch backset, which a cylindrical bore cannot be converted to without a new door or a mortise kit.
11) Is there another Grade 1 field reversible mortise lock body if the Corbin Russwin ML2002 does not suit?
The Accentra 8800FL Series mortise lock body is the other Grade 1 field reversible body ZenSupply carries, so it is the closest cross-brand swap on that count. Where the ML2002 is specified is the Classroom Intruder function with its 1 inch stainless deadbolt and the 14.5 million cycle UL rating. If you are already standardized on a Corbin Russwin key system across the building, staying with the ML2000 body keeps the cylinders and trim in one family.
12) Can I use the same ML2000 lock body for other functions across a building, or is each door a different part?
The ML2000 Series is built for standardization. Corbin Russwin states 12 functions are configurable from one ML2054 lockbody, so an MRO or facilities buyer can hold fewer part numbers across a site. The ML2002 as ordered is the Classroom Intruder function. Trim choices are wide, including Museo, Vineyard and Behavioral Health (BHSS/BLSS), and status indicator options for locked/unlocked visibility are available on sectional and escutcheon trim.
13) Does the ML2002 mortise lock need power or wiring?
No. The ML2002 is a mechanical lockbody with no electrical component, so there is no power transfer hinge, no wiring and nothing to fail in a power outage. If you do need electric latch retraction on this family, Motorized Electric Latch Retraction is offered on the ML20900 series instead.
14) For an institutional standardization spec, does the Accentra 8800FL body meet the same grade as the Corbin Russwin ML2002?
Yes on grade. The Accentra 8800FL Series mortise lock body is Grade 1, and the Corbin Russwin ML2002 is Grade 1 as well, certified to ANSI/BHMA A156.13 Series 1000 at both Operational and Security Grade 1. Where the two differ for a facility standard is what else the ML2002 carries: UL/cUL UL10C positive pressure listing for 3-hour fire doors up to 4 ft x 10 ft single or 8 ft x 10 ft pair, ADA A117.1, California State Fire Marshal, and windstorm certification, plus a 14.5 million cycle UL verification. If your spec calls out fire rating or state fire marshal listing in addition to grade, confirm those approvals separately for the Accentra body rather than reading them across from the shared Grade 1 designation.
15) I need a mortise lock body for a classroom door but not classroom intruder function. What should I order instead of the ML2002?
Stay in the ML2000 Series and order the body in the function the opening actually calls for. The Corbin Russwin ML2002 is specifically the Classroom Intruder function, which is what you want when staff need to lock the door from inside the room. For a conventional classroom, office, or storeroom opening the ML2000 Series covers those functions from the same case, and the series is built so 12 functions are configurable from one ML2054 lockbody. The Accentra 8800FL Series is the other route if you are matching an existing Accentra keying or trim standard in the building; it is also a Grade 1 mortise lock body with field reversible handing, so specify the function code on that body the same way.
16) How do I toughen up a classroom door beyond the standard ML2002 lock?
Two upgrades on the ML2000 platform. The ML2000VR vandal resistant option uses stainless steel escutcheons with tapered edges and Torx pin tamper-resistant screws. Pair that with a Corbin Russwin Pyramid or Access 3 high-security cylinder for key control against picking and unauthorized duplication. Trim on this family is thru-bolted, which keeps alignment and adds pull-off resistance on the lever side.
17) The ML2002 comes in 12 finishes. Does the finish choice affect which lock body I get?
No. The Corbin Russwin ML2002 lockbody is offered in finishes from 605 Bright Brass and 606 Satin Brass through 626 Satin Chrome, 630 Satin Stainless Steel, and 722 Black Oxidized Bronze Oil-Rubbed, and the mechanical body, its Grade 1 rating, and its Classroom Intruder function are the same across all of them. Finish matters for the exposed parts, meaning the armored front and strike in wrought brass, bronze, or stainless steel, so pick the code that matches the trim and the other openings in the building. If you are mixing in an Accentra 8800FL body elsewhere in the same corridor, match the BHMA finish number rather than the finish name, since the numbers are the common language across brands.
How fast can I get the Corbin Russwin COR-ML2002-LL-626 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 Corbin Russwin COR-ML2002-LL-626 come with a warranty?
Absolutely. The Corbin Russwin COR-ML2002-LL-626 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 Corbin Russwin COR-ML2002-LL-626?
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
Why buy the Corbin Russwin COR-ML2002-LL-626 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.

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