Corbin Russwin ML2053 Grade 1 ...
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$394.60
Corbin Russwin Corbin Russwin ML2053 Entrance or Office - Mortise Lockbody Only COR-ML2053-LL

Corbin Russwin ML2053 Grade 1 Entrance or Office - Mortise Lockbody Only

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Model: ML2053-LL-626
From the ML2000_Series Collection
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$693.91
$394.60
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Corbin Russwin ML2053-LL Grade 1 Entrance/Office Mortise Lockbody with Field-Reversible Latchbolt

Commercial-Grade Mortise Lock Security for High-Traffic Applications

The Corbin Russwin ML2053-LL is a Grade 1 Entrance/Office Mortise Lockbody from the ML2000 Series, engineered for demanding commercial, institutional, industrial, and government environments. Constructed of heavy-gauge steel with a 1" stainless steel deadbolt, this lockbody delivers the latchbolt operation and security performance required for high-use facilities such as offices, schools, hospitals, and hotels. Designed for 1-3/4" (44mm) standard door thickness with a field-reversible handing feature, the ML2053-LL simplifies installation and adapts to a wide range of door configurations. The ML2000 Series has been UL cycle tested above and beyond standard requirements, completing over 14.5 Million Cycles (Verification ID: V875753).

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
  • Hotel and Hospitality Properties
  • Industrial and Government Facilities
  • Multi-Tenant Residential and Mixed-Use Properties
  • Institutional and High-Traffic Public Buildings

Tamper-Resistant Design

The ML2000VR (Vandal Resistant) Series option features vandal-resistant stainless steel escutcheons with tapered edges and Torx® pin tamper-resistant screws, providing a formidable barrier against abuse and unauthorized manipulation. When paired with Corbin Russwin patented high-security Pyramid or Access 3® cylinders, the ML2053-LL lockbody transforms any door into a robust security barrier against intruders.

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise lockbodies are built from heavy-gauge steel and feature a one-piece stainless steel deadbolt, delivering Grade 1 performance verified through UL cycle testing exceeding 14.5 Million Cycles (Verification ID: V875753). The ML2053-LL is backed by a 10 Year Limited warranty, reflecting Corbin Russwin's commitment to long-term reliability. Engineered for the most demanding commercial, institutional, and government applications, the ML2000 Series provides life safety and security in a single door preparation without the added cost of a separate deadlock.

Product Specs

Subcategory:
Mortise Locks
Product Group:
Mechanical Locks
Series:
ML2000 Series
Grade:
Grade 1
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
Keyed Function:
Non-Keyed
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:
Entrance/Office
Product Attribute:
Mortise Locks
Electronic:
No
Product Model:
ML2053
Collection:
ML2000_Series
Product Function:
Entrance/Office
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 ML2053-LL-626 – Frequently Asked Questions

1) Is the Corbin Russwin ML2053 a complete lockset or just the lock case?
Lock case only. The ML2053 is a mortise lockbody, so trim (lever or knob, roses or escutcheons), the cylinder, and the strike are separate line items on the order. Buy it this way when you already have Corbin Russwin trim on the opening and only the internals have failed, or when the trim design is being specified separately. If you need a complete opening in one box, you want a full ML2000 lockset instead of the bare body.
2) Will an ML2053 mortise lockbody fit a 1-3/4 inch door with a 2-3/4 inch backset prep?
That is exactly the standard prep for it. The ML2053 is built for 1-3/4 inch (44mm) door thickness with a 2-3/4 inch (70mm) backset, and the steel case measures 5-7/8 x 4 x 15/16 inches, which is the standard ANSI mortise pocket. Optional thicknesses are available beyond 1-3/4 inch. Center to center, knob or lever to cylinder is 3-5/8 inches, and lever to thumbturn is 2-7/16 inches, so confirm your existing trim or door prep matches those hole spacings before dropping it in.
3) Do I have to order the ML2053 handed, or can it be reversed on site?
Order it and hand it in the field. The latchbolt is patented Quick Reversible, so handing is changed without opening the lock case. For a locksmith carrying stock or a property manager standardizing across a building with mixed swings, that means one part number covers left and right hand openings.
4) Will the ML2053 latch into the strike that is already in my frame?
It latches with a 3/4 inch (19mm) throw two-piece anti-friction latchbolt, plus a 9/16 inch deadlocking auxiliary latch, and the deadbolt throws a full 1 inch of one-piece stainless. The standard strike is an ANSI straight lip, 4-7/8 x 1-1/4 inches with 1-1/8 inch lip to center. If your frame already carries an ANSI 4-7/8 inch strike with a 1 inch deadbolt pocket, the ML2053 lands in it. A frame prepped only for a cylindrical lock strike will not accept the deadbolt and needs the mortise strike.
5) Is the Corbin Russwin ML2053 rated for a fire door, and what grade is it?
Grade 1 to ANSI/BHMA A156.13 Series 1000, both operational and security. It is UL and cUL listed, UL10C positive pressure, and approved for 3-hour fire doors up to 4 x 10 feet single or 8 x 10 feet pair. It also meets ADA A117.1 and carries California State Fire Marshal and windstorm/hurricane certification. Cycle testing ran past 14.5 million cycles (Verification ID V875753), which is the number that matters for a school corridor or hospital door.
6) Can I use a cylinder from another manufacturer in a Corbin Russwin ML2000 mortise lock?
Yes. The ML2000 case accepts most other manufacturers' mortise cylinders, and it works with new or existing Corbin Russwin key systems, so a building already keyed to Schlage or Best small format can usually keep its keyway. The Corbin Russwin standard cylinder is brass, 6-pin, L4 keyway, supplied 0-bitted. High security options include the patented Pyramid and Access 3 cylinders. The lockbody itself ships non-keyed, so the cylinder is ordered separately.
7) What is the closest cross-brand equivalent to a Corbin Russwin ML2053 mortise lock body?
The Accentra 8800FL Series mortise lock body is the nearest peer. Both are Grade 1 mortise lock bodies with field-reversible handing, so an opening prepped for a standard mortise pocket can take either as the lock case. The ML2053 is the Entrance/Office function in the ML2000 Series; the Accentra part is catalogued as a lock body with field reversible handing in the 8800FL Series. Trim, cylinder, and strike follow each manufacturer's own system, so specify those to match whichever body you order rather than assuming they interchange.
8) Will an Accentra 8800FL lock body work with the Corbin Russwin trim already on my doors?
Treat them as separate systems. The Accentra 8800FL Series body and the Corbin Russwin ML2053 are both Grade 1 field-reversible mortise bodies, which makes them look interchangeable, but trim, spindles, and cylinder fit follow each manufacturer's own hub and spacing arrangement. The ML2053 uses ML2000 Series trim, with knob or lever to cylinder spacing of 3-5/8 inch and knob or lever to thumbturn spacing of 2-7/16 inch. If you are keeping existing Corbin Russwin trim in place, order the ML2053 body; if you are replacing the full assembly, either series can be specified as a complete set.
9) What does the Entrance/Office function on a mortise lock actually do at the door?
Entrance or office function means the outside lever is locked or unlocked by key, and the inside lever always retracts the latch for free egress. The ML2053 also carries a 1 inch stainless deadbolt in the same case, thrown by key outside or thumbturn inside, so an office gets both day-to-day latching and a deadbolt in a single door prep with no separate deadlock to mortise.
10) Which finish do I order to match the rest of the door hardware, and does the lockbody finish even show?
Fourteen finishes are offered: 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 satin bronze oil-rubbed, 613E dark oxidized satin bronze equivalent, 618 bright nickel, 619 satin nickel, 625 bright chrome, 626 satin chrome, 629 bright stainless, 630 satin stainless, 722 black oxidized bronze oil-rubbed, and BSP black suede powder coat. On a lockbody the finish applies to the armored front, the 8 x 1-1/4 inch face that stays visible on the door edge, so match it to the strike and trim on the rest of the opening. 626 satin chrome and 630 satin stainless are the usual commercial defaults.
11) Is a mortise lock the right choice, or should I just use a cylindrical lever on a commercial door?
Go mortise when the opening needs a deadbolt and a latch together, takes heavy traffic, or is a fire door where a separate deadlock is not wanted. The ML2053 puts a 1 inch deadbolt and a 3/4 inch latch in one 5-7/8 x 4 x 15/16 inch pocket, and it is Grade 1 with 14.5 million cycles behind it. The catch is the prep: a mortise pocket has to be routed into the door edge. A cylindrical lever only needs a 2-1/8 inch cross bore, so on an existing door that was never prepped for mortise, retrofitting means a new door or a heavy mortising job. If the door is already mortise prepped, this is the straightforward replacement.
12) I need a Grade 1 mortise lock body with field reversible handing but not Corbin Russwin. What else is there?
The Accentra 8800FL Series mortise lock body is the closest cross-brand equivalent we carry: Grade 1, also field reversible handing, and also sold as a bare body. Pick by what is already on the building. Trim, cylinders, and armored fronts are brand-specific on mortise locks, so if the existing openings are Corbin Russwin ML2000 the ML2053 drops into the same prep and reuses the same key system, while switching brands generally means changing the trim as well.
13) Can one ML2000 lockbody be changed to a different function later if the room use changes?
The ML2000 series is multi-function: 12 functions are configurable from a single ML2054 lockbody. That is the part number to specify if you want the flexibility to convert storeroom, classroom, or privacy behaviour later without restocking. The ML2053 itself is the dedicated Entrance/Office body. For a property manager holding spares across a mixed portfolio, the multi-function body cuts how many distinct lock cases sit on the shelf.
14) Is there an electrified or vandal resistant version of the Corbin Russwin ML2000 mortise lock?
Both exist in the series. Motorized Electric Latch Retraction (MELR) is offered on the ML20900 series for access control openings. For abuse-prone doors, the ML2000VR option uses vandal resistant stainless escutcheons with tapered edges and Torx pin tamper-resistant screws. The ML2053 body itself is mechanical, not electronic, so if the opening needs a card reader or remote release, specify the electrified series rather than adding to this one.
15) If I standardize a building on Grade 1 mortise locks, does mixing Corbin Russwin ML2053 and Accentra 8800FL bodies change the performance level?
Both carry a Grade 1 rating for mortise lock bodies, so the performance class is the same across the two. What differs is the parts and keying ecosystem: the ML2053 is an ML2000 Series body that works with new or existing Corbin Russwin key systems and accepts most other manufacturers' cylinders, while the Accentra body belongs to the 8800FL Series. For a facility standard, the practical decision is which series you want to stock trim, cylinders, and service parts for, not the grade.
16) I need a lock body I can hand on site without knowing left or right in advance - which mortise bodies allow that?
Both the Corbin Russwin ML2053 and the Accentra 8800FL Series mortise lock body are field reversible, so handing is set at the opening rather than at the time of order. On the ML2053 the reversal is done with a quick reversible latchbolt that re-hands without disassembling the lock case. For a service truck stocking one body for either hand, either part answers the requirement; the deciding factor is which trim and cylinder line the rest of the building already uses.
17) What material is the Corbin Russwin ML2053 lock case and armored front made of?
Heavy-gauge steel case, with the armored front in wrought brass, bronze, or stainless steel at 8 x 1-1/4 inches, matched to the strike in the same materials. The deadbolt is one-piece stainless, 19/32 x 1-1/4 inches with a 1 inch throw, and the latchbolt is a two-piece mechanical unit with an anti-friction insert measuring 5/8 x 1 inches. The anti-friction insert is why the door pulls closed with less force, which matters on closers set heavy for a fire rated opening.
How fast can I get the Corbin Russwin ML2053-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 ML2053-LL-626 come with a warranty?
Absolutely. The Corbin Russwin ML2053-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 ML2053-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
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