Corbin Russwin 544F85 Grade 1...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$205.92
$158.44
Corbin Russwin 544F85 - ML2000 Mortise Lock Series Part, Wrought "N" Escutcheon, for Thumbturn Lever and Grip, Inside - 1-3/4" Door

Corbin Russwin 544F85 Grade 1 - ML2000 Mortise Lock Series Part, Wrought "N" Escutcheon, for Thumbturn Lever and Grip, Inside - 1-3/4" Door

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Model: 544F85 626
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$205.92
$158.44
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Corbin Russwin 544F85 ML2000 Series Wrought N Escutcheon for Thumbturn Lever and Grip, Inside, 1-3/4" Door

Commercial-Grade Mortise Lock Replacement Escutcheon for ML2000 Series Applications

The Corbin Russwin 544F85 is a Wrought "N" Escutcheon designed for use with the ML2000 Mortise Lock Series, specifically configured for thumbturn lever and grip applications on the inside of the door. Measuring 7-1/2" x 2-1/4" in wrought construction, this escutcheon is engineered for 1-3/4 inch door thickness and delivers the precision fit and Grade 1 performance expected from Corbin Russwin commercial door hardware. Its field-reversible door hand direction provides installation flexibility across a wide range of commercial openings.

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 Dormitories
  • Healthcare Institutions
  • Retail Establishments
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Industrial and Warehouse Facilities

Why Choose Corbin Russwin Quality?

Corbin Russwin mortise lock components are built to Grade 1 commercial standards, delivering the precision fit and long-term reliability required in demanding institutional and commercial environments. The 544F85 escutcheon is backed by a 10 Year Limited warranty, reflecting Corbin Russwin's commitment to durable, professional-grade door hardware. Engineered for the ML2000 Series, this replacement part ensures consistent performance and a seamless match with existing Corbin Russwin installations.

Product Specs

Product Group:
Parts and Accessories
Series:
ML2000 Series
Grade:
Grade 1
Warranty:
10 Year Limited
Product Subgroup:
Parts and Accessories
Product Type:
Escutcheon
Commercial/Residential:
Commercial
Lock Type:
Mortise
Subcategory:
Parts and Accessories
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Product Function:
Corridor/Dormitory
Door Hand Direction:
Field Reversible
Product Category:
Mechanical Locks
Department:
Door Hardware

Corbin Russwin 544F85 626 – Frequently Asked Questions

1) What exactly is the Corbin Russwin 544F85, the whole lock or just the plate?
Just the plate. The 544F85 is a wrought "N" escutcheon for the ML2000 Series mortise lock, the inside plate cut for a thumbturn with a lever or grip. It measures 7-1/2 x 2-1/4 inches and does not include the lockbody, cylinder, lever, or thumbturn. If your lock case is fine and the trim is bent, gouged, or the wrong finish, this is the part you order. If the lock itself is failing, you need an ML2000 lockbody instead.
2) Will the 544F85 escutcheon fit my door thickness?
It is made for 1-3/4 inch doors, which is the standard commercial thickness. The ML2000 lock it trims is a 1-3/4 inch (44mm) standard lock with optional thicknesses available, so if your opening runs thicker than 1-3/4 the trim has to be ordered to that thickness rather than substituted from the standard part.
3) Do I need to order a left hand or right hand version of this Corbin Russwin escutcheon?
No. Door hand direction on the 544F85 is field reversible, so one part covers both hands and you set it at install. That matches the ML2000 lock case, which uses a quick reversible latchbolt that re-hands without disassembling the case. For a property manager stocking spares across a building, that means one shelf part instead of two.
4) Which ML2000 trim do I order, the thumbturn escutcheon or a plain one?
Order the 544F85 only when the inside of the door carries a thumbturn along with a lever or grip, which is the classic corridor and dormitory arrangement where the room side can throw the deadbolt by hand. The plate is bored for both, with the lever or knob to thumbturn spacing at 2-7/16 inches (62mm) center to center. If the inside trim is lever only with no turn, or lever plus a cylinder, that is a different escutcheon cut, and this one will leave you with a hole in the wrong place.
5) Will replacing the escutcheon on my ML2000 mortise lock affect its fire rating?
The ML2000 mortise lock is UL/cUL listed to UL10C positive pressure and rated for 3-hour fire doors up to 4 x 10 feet single or 8 x 10 feet pair. Keeping the assembly listed means using Corbin Russwin's own ML2000 trim, which is what the 544F85 is. Swapping in a generic plate is how a rated opening quietly stops being rated.
6) Does the 544F85 escutcheon cover the old cutout if I am replacing another brand's mortise trim?
Treat it as an ML2000 part only. The 7-1/2 x 2-1/4 inch wrought plate is dimensioned to the Corbin Russwin ML2000 prep with the lock's own spacings, 3-5/8 inches (92mm) lever to cylinder and 2-7/16 inches (62mm) lever to thumbturn. On a door already prepped for a different manufacturer's mortise lock, the holes will not line up unless that prep happens to match, and you would be buying trim to fix a lock body you are not replacing.
7) What finishes does the Corbin Russwin 544F85 escutcheon come in?
Thirteen: 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, and 722 black oxidized bronze oil-rubbed. When you are patching one door in a corridor, match the BHMA number stamped on the existing trim rather than matching by eye, since 612, 613 and 722 read very close once they have aged.
8) Is the 544F85 heavy enough for a dormitory or high-traffic corridor?
It is Grade 1 trim for a Grade 1 lock. The ML2000 is certified to ANSI/BHMA A156.13 Series 1000 at both Operational and Security Grade 1, and the family carries a UL cycle verification of 14.5 million cycles. Wrought construction rather than cast is what holds up to a student body leaning on the plate. For an institutional buyer standardizing a building, the same escutcheon works across the ML2000 line, which configures 12 functions from one ML2054 lockbody.
9) What else do I need to order with an ML2000 escutcheon to finish the job?
The escutcheon is one face of the trim. Plan on the matching outside trim, the lever or grip itself, the thumbturn, and the cylinder if you are changing it, all in the same finish. Corbin Russwin ML2000 trim is thru-bolted, so the inside and outside plates pull against each other and both halves have to be present and aligned. On the keying side, the lock works with new or existing Corbin Russwin key systems and accepts most other manufacturers' cylinders, with a 6-pin L4 keyway brass cylinder shipping 0-bitted as standard.
10) Will the deadbolt still throw properly into my existing strike after I change the trim?
Changing the escutcheon does not change the bolt geometry. The ML2000 throws a one-piece stainless deadbolt with a 1 inch (25mm) throw and a two-piece anti-friction latchbolt with a 3/4 inch (19mm) throw, plus a deadlocking auxiliary latch at 9/16 inch (14mm) effective throw, into an ANSI straight lip strike measuring 4-7/8 x 1-1/4 inches with a 1-1/8 inch lip to center. Backset stays 2-3/4 inches (70mm). If the door latched correctly before, it will after.
11) Is a thumbturn escutcheon like this ADA compliant for a corridor opening?
The ML2000 mortise lock line is certified to ADA A117.1, and it also holds California State Fire Marshal listing and windstorm/hurricane certification. Note that the operating hardware decides the accessible experience, so pair the escutcheon with a lever rather than a knob on any opening you need to keep ADA compliant.
12) Does the ML2000 escutcheon fit the electrified or indicator versions of the lock?
The ML2000 platform offers status indicator options on both sectional and escutcheon trim, and Motorized Electric Latch Retraction on the ML20900 series. Those are trim and lockbody variants in their own right, so a lock ordered with a locked/unlocked indicator uses the indicator escutcheon, not the plain wrought "N" plate. Specify the 544F85 for straight mechanical thumbturn openings.
How fast can I get the Corbin Russwin 544F85 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 544F85 626 come with a warranty?
Absolutely. The Corbin Russwin 544F85 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 544F85 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 544F85 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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