Corbin Russwin ML2062 Grade 1 ...
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Corbin Russwin Corbin Russwin ML2062 Mortise Intruder Deadbolt Lever Lockset COR-ML2062-KEYED

Corbin Russwin ML2062 Grade 1 Mortise Intruder Deadbolt Lever Lockset

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Model: COR-ML2062-NSA-626
From the ML2000_Series Collection
$1,655.00
$1,026.55
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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 ML2062-KEYED Mortise Intruder Deadbolt Lever Lockset Grade 1, Field Reversible, 1-3/4" Door

Commercial-Grade Intruder Deadbolt Mortise Lock for High-Traffic Security Applications

The Corbin Russwin ML2062-KEYED is a Grade 1 mortise intruder deadbolt lever lockset from the ML2000 Series, engineered for demanding commercial, institutional, industrial, and government environments. Constructed of heavy-gauge steel with a 1" stainless steel deadbolt and patented Quick Reversible latchbolt, this lockset is designed for 1-3/4" (44mm) standard door thickness and features field-reversible handing for flexible installation. The ANSI F33 function allows the latchbolt to operate by grip from either side unless the outside grip is locked by projection of the deadbolt, while the inside grip simultaneously retracts both the latchbolt and deadbolt and unlocks the outside grip. The included ANSI straight lip strike measures 4-7/8" (124mm) x 1-1/4" (32mm) x 1-1/8" (29mm) lip to center, ensuring a precise and secure fit.

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, further discouraging intrusion and abuse. When paired with Corbin Russwin patented high-security Pyramid or Access 3® cylinders, any door becomes a formidable barrier to intruders.

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, UL Cycle tested to an exceptional 14.5 Million Cycles (Verification ID: V875753) — well above and beyond standard requirements. Backed by a 10 Year Limited warranty and featuring the patented Quick Reversible latchbolt, the ML2062-KEYED is engineered for the most demanding commercial applications where dependable 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
ANSI/BHMA:
F33
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 grip either side, unless outside grip is locked by projection of deadbolt. Deadbolt thrown or retracted by key from either side. Inside grip simultaneously retracts latchbolt and deadbolt and unlocks outside grip.
Lock Type:
Mortise
Handle Type:
Lever
Lock Function:
Intruder Deadbolt
Product Attribute:
Mortise Locks
Electronic:
No
Product Model:
ML2062
Collection:
ML2000_Series
Product Function:
Intruder
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-ML2062-NSA-626 – Frequently Asked Questions

1) What does the ML2062 intruder function actually do on the door?
It's the ANSI F33 intruder deadbolt function. The latchbolt retracts by grip from either side unless the outside grip is locked by throwing the deadbolt. The deadbolt is thrown or retracted by key from either side, and turning the inside grip pulls back both the latchbolt and the deadbolt at once while unlocking the outside grip. That single-motion inside egress is why this function gets specified for classrooms and other rooms that must lock down from inside without trapping anyone.
2) Will the Corbin Russwin ML2062 fit a 1-3/4 inch door with a 2-3/4 inch backset prep?
Yes. The ML2062 is built for 1-3/4 inch (44mm) standard door thickness with a 2-3/4 inch (70mm) backset, which is the standard commercial mortise prep. The lock case measures 5-7/8 x 4 x 15/16 inches and the armored front is 8 x 1-1/4 inches, so it drops into an ANSI mortise pocket. Optional door thicknesses are available if your doors are thicker than 1-3/4 inches.
3) Do I have to order this mortise lock handed, or can I reverse it in the field?
You don't need to commit to a hand for the lock body. The ML2062 uses Corbin Russwin's patented Quick Reversible latchbolt, so handing is changed without disassembling the lock case. Note one exception on trim: the DS Dirke lever is offered as a left hand and a right hand version, so that lever style has to be ordered to the door's hand even though the case does not.
4) Will this latch into the strike already in my frame?
The ML2062 ships with an ANSI straight lip strike measuring 4-7/8 x 1-1/4 inches with 1-1/8 inch lip to center, so if your frame is already cut for a standard ANSI strike it lines up. The latchbolt throws 3/4 inch (19mm) with a two-piece anti-friction insert, the auxiliary latchbolt has a 9/16 inch effective throw and deadlocks, and the deadbolt throws a full 1 inch, so the frame needs a deadbolt pocket deep enough for that inch.
5) Can I key this Corbin Russwin mortise lock into my existing master key system?
Yes. The standard build is a conventional 6-pin brass cylinder in the L4 keyway, shipped 0-bitted so a locksmith can pin it to your system. It works with new or existing Corbin Russwin key systems and accepts most other manufacturers' cylinders. If you're on an interchangeable core system, order CL6 for LFIC 6-pin less core or CL7 for LFIC 7-pin less core, or LC to take the lock with no cylinder at all. Keying is specified KD keyed different or KA keyed alike when you want a group of doors on one key.
6) Is this mortise lock approved for a fire rated door?
Yes. The ML2062 is UL/cUL listed and UL10C positive pressure rated, good for 3-hour fire doors up to 4 ft x 10 ft single or 8 ft x 10 ft pair. It also carries ANSI/BHMA A156.13 Series 1000 Grade 1 for both operational and security, ADA A117.1 compliance, California State Fire Marshal listing, and windstorm/hurricane certification.
7) What is the closest mechanical equivalent to the Corbin Russwin ML2062 intruder deadbolt mortise lock from another brand?
The BEST 45HCA heavy duty mortise lockbody is offered in an intruder function, making it the nearest mechanical counterpart to the Corbin Russwin ML2062, which is a Grade 1 intruder deadbolt mortise lock. The BEST part is catalogued as a lockbody, while the ML2062 is a complete keyed lever lockset with lever, rose or escutcheon trim, cylinder and ANSI straight lip strike. Confirm trim is specified separately if you go the BEST route.
8) I need an electronic lock with intruder classroom function instead of a keyed one - what should I look at?
The TownSteel FME-4000 Series is an electronic intruder classroom mortise lockset with RFID technology, Grade 1 heavy duty, for 1-3/4 inch doors. The Corbin Russwin ML2062 covers the same intruder lockdown idea mechanically - deadbolt thrown by key from either side, inside grip retracting both bolts - and is non-electronic, so it needs no power or credential management.
9) If the opening only needs a keyed lever without a deadbolt, what replaces the ML2062?
For a keyed lever with no deadbolt, look at the Accentra 8805FL Grade 1 storeroom mortise lock in the 8800 Series or the Cal-Royal NM8080 Grade 1 storeroom mortise lockset for 1-3/4 inch doors. Both are latch-only storeroom function; the Corbin Russwin ML2062 adds a 1 inch throw stainless deadbolt and ANSI F33 intruder operation where the projected deadbolt locks the outside lever.
10) My doors are 1-5/8 to 1-7/8 inch thick - can I use the ML2062?
The Corbin Russwin ML2062 is built for 1-3/4 inch standard door thickness. If your doors fall in a 1-5/8 to 1-7/8 inch range, the Alarm Lock DL3500CR Grade 1 classroom electronic mortise lock and the DL4500 Series Grade 1 electronic mortise deadbolt are both listed for 1-5/8 to 1-7/8 inch, though both are keypad electronic rather than mechanical.
11) What do I need to specify besides the lock body when I order?
Four things decide the part you get: cylinder type (standard conventional 6-pin L4, LC less cylinder, CL6 LFIC 6-pin less core, or CL7 LFIC 7-pin less core), keying (KD keyed different or KA keyed alike), lever style from nine designs (Armstrong, Citation, Dirke, Essex, Lustra, Newport, Princeton, Regis), and the rose or escutcheon: A rose at 2-1/4 inch diameter, F rose at 2-7/8 inch, or M or N escutcheon. Finish is picked from 14 options including 626 satin chrome, 630 satin stainless, 613 oil-rubbed bronze and BSP black suede powder coat.
12) Is there a door thickness limit I should watch for on the escutcheon and cylinder spacing?
Spacing is fixed by the lock case: center to center from knob or lever to cylinder is 3-5/8 inches (92mm), and lever to thumbturn is 2-7/16 inches (62mm). Those are the hole centers your door prep and any existing escutcheon cutouts have to match. Standard build is 1-3/4 inch door thickness, with optional thicknesses available for thicker doors.
13) For a classroom lockdown, should I use the ML2062 or an electronic classroom intruder lock?
The ML2062 is fully mechanical, no wiring and no batteries, and it locks the outside grip by throwing a key-operated deadbolt from either side while inside egress stays single motion. If you want credential control and audit instead, TownSteel's FME-4000 Series is an electronic intruder classroom mortise lock with RFID, Grade 1, for 1-3/4 inch doors, and the FME-2000 Series is the RFID classroom version. Choose mechanical when you want no power dependency; choose the RFID locks when you need to manage credentials centrally.
14) How durable is this lock for a high traffic opening like a school corridor?
Built for high traffic: heavy-gauge steel lock case, a one-piece stainless steel deadbolt, and UL cycle tested to 14.5 million cycles (Verification ID V875753), well past Grade 1 minimums. It carries ANSI/BHMA A156.13 Grade 1 for both operational and security. Trim is thru-bolted for alignment and added security. For abuse-prone openings the ML2000VR vandal resistant option adds stainless escutcheons with tapered edges and Torx pin tamper-resistant screws.
15) I'm standardizing a building on ML2000 mortise locks but need different functions per door. Do I have to buy different lock bodies?
Not for most of them. The ML2000 Series lock body is multi-function: 12 functions are configurable from one ML2054 lockbody, so a facility can stock a single body and set the function needed. Backset stays 2-3/4 inches and the ANSI strike stays the same across them, so door and frame prep is consistent building-wide. If some openings need electric latch retraction, MELR is available on the ML20900 series.
16) Is the ML2062 the same thing as a double cylinder mortise deadbolt?
No. The ML2062 is a lever lockset with both a latchbolt and a 1 inch deadbolt in one mortise case, keyed from both sides, and the inside lever releases both at once. A standalone deadbolt like the Sargent 4874 double cylinder mortise deadbolt with a 2-3/4 inch backset has no latch and no lever, so it's what you add to a door that already has separate latching hardware. If you want one case doing both jobs on a fire rated opening, the ML2062 is the right choice.
17) Is the Sargent 4874 mortise deadbolt a substitute for the ML2062?
No. The Sargent 4874 is a double cylinder mortise deadbolt on a 2-3/4 inch backset - deadbolt only, with no latch or lever. The Corbin Russwin ML2062 combines a lever-operated latchbolt with a keyed deadbolt in one 5-7/8 inch by 4 inch lockcase, so the 4874 would leave the door without latching or lever operation.
18) What mortise lock should I use for a classroom door that needs a visual locked indicator rather than intruder deadbolt operation?
The Marks USA LA318GJ is a Grade 1 classroom security indicator mortise lockset for 1-3/4 inch doors with an ANSI strike and an 8-1/2 inch by 2-3/4 inch by 7/16 inch steel escutcheon. The Corbin Russwin ML2062 is an F33 intruder deadbolt function and also offers status indicator options on sectional and escutcheon trim.
19) For a behavioral health or anti-ligature opening, is the ML2062 the right choice or should I look elsewhere?
The TownSteel MRX-L-01 is a Grade 1 heavy duty anti-ligature lever mortise lockset in stainless steel with passage function, and the MRX-A-01 is the ligature resistant arch trim version, both for 1-3/4 inch doors. The Corbin Russwin ML2062 is a keyed intruder deadbolt function and offers Behavioral Health BHSS and BLSS trim designs if you need the keyed function with that trim family.
20) What differentiates the ML2062 from a privacy mortise lock with a deadbolt like the Cal-Royal NM8440?
The Cal-Royal NM8440 is a Grade 1 privacy bed and bath mortise lockset with a deadbolt for 1-3/4 inch doors, intended for occupant privacy. The Corbin Russwin ML2062 is keyed on both sides - a double cylinder keyed function where the deadbolt is thrown or retracted by key from either side and the projected deadbolt locks the outside lever. Hager also offers the 3840S Grade 1 privacy mortise lock on a 2-3/4 inch backset for 1-3/4 to 2 inch doors.
21) Do I need a handed lock, or is there a field reversible alternative to the ML2062?
The Corbin Russwin ML2062 is field reversible - the patented Quick Reversible latchbolt re-hands without disassembling the lock case. Among peers, the BEST 45HCA public entrance lockbody is also field reversible, and the Falcon MA101 Grade 1 heavy duty mortise passage lock is field reversible as well, though those are public entrance and passage functions rather than intruder deadbolt.
22) Which mortise locks are Grade 1 like the ML2062 for a 1-3/4 inch commercial door?
The Corbin Russwin ML2062 is ANSI/BHMA Grade 1 for 1-3/4 inch doors. Grade 1 peers on the same 1-3/4 inch thickness include the Cal-Royal NM8050 office/entrance, NM8070 classroom and NM8080 storeroom locksets, the Schlage PM010 passage mortise lock, and the TownSteel FME-2000 classroom RFID lockset. Each carries a different function, so match the function to the opening.
23) For a dormitory corridor door, is the ML2062 or the Sargent 7925 the right function?
The Sargent 7925 is a Grade 1 heavy duty corridor/dormitory exit function mortise lock in the 7900 Series with rose trim and a single cylinder deadbolt. The Corbin Russwin ML2062 is a double cylinder keyed function where the deadbolt is operated by key from either side, so choose the 7925 where the inside is meant to be thumbturn-free single cylinder and the ML2062 where both sides are keyed.
24) Can I tell from the hallway whether the room is locked?
Status indicator options are available on the ML2000 Series for locked and unlocked visibility, offered with sectional and escutcheon trim. That matters on intruder function doors where staff need to confirm at a glance that the outside grip is secured by the deadbolt. Trim ranges beyond the standard levers as well, including Museo, Vineyard, and Behavioral Health BHSS/BLSS designs.
25) What should I order if I only need matching dead trim on an inactive leaf next to an ML2062?
The Schlage L0170 is a Grade 1 mortise non-keyed half dummy trim for 1-3/4 inch doors. Emtek also offers dummy mortise entrance locksets in the Brisbane 3019, Memphis 3102, Hamilton 3104 and Manhattan 3106 patterns. None of these operate a latch or deadbolt - the Corbin Russwin ML2062 is the working keyed intruder deadbolt half of the pair.
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Does the Corbin Russwin COR-ML2062-NSA-626 come with a warranty?
Absolutely. The Corbin Russwin COR-ML2062-NSA-626 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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