Corbin Russwin 670F3 Grade 1 M...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$324.97
$235.91
Corbin Russwin 670F3 ML2000 Inside Lever

Corbin Russwin 670F3 Grade 1 ML2000 Inside Lever

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Model: 670F31-626
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$324.97
$235.91
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Corbin Russwin 670F3 ML2000 Series Mortise Inside Lever Trim Replacement Part

Commercial-Grade Mortise Lock Trim for ML2000 Series Applications

The Corbin Russwin 670F3 is a professional-grade mortise inside lever trim replacement part designed specifically for use with the ML2000 Series Mortise locksets. Engineered to deliver reliable, field-reversible operation, this inside lever serves as a direct-fit component for commercial mortise lock installations requiring replacement or upgrade of interior trim. Classified as commercial door hardware, the 670F3 integrates seamlessly with the ML2000 Series to restore or maintain proper mortise lock function in 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

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

Why Choose Corbin Russwin Quality?

Corbin Russwin mortise lock trim and replacement parts are engineered to commercial-grade standards, delivering consistent performance and precise fitment within the ML2000 Series platform. The field-reversible door hand direction ensures installation flexibility across a wide range of commercial door configurations. Designed for demanding commercial applications, Corbin Russwin replacement components help maintain the integrity and reliability of your existing mortise lock hardware investment.

Product Specs

Product Group:
Parts and Accessories
Series:
ML2000 Series
Product Subgroup:
Parts and Accessories
Product Type:
Lock Trim
Commercial/Residential:
Commercial
Lock Type:
Mortise
Subcategory:
Parts and Accessories
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Door Hand Direction:
Field Reversible
Product Category:
Mechanical Locks
Department:
Door Hardware

Corbin Russwin 670F31-626 – Frequently Asked Questions

1) Will the Corbin Russwin 670F3 inside lever work on my existing mortise lock, or only on ML2000 Series?
The 670F3 is an inside lever trim built for the Corbin Russwin ML2000 Series mortise locksets. It mounts to that lockbody and no other. If your door has a different mortise lock case, the 670F3 spindle and thru-bolt spacing won't line up, and you need trim made for that lock family instead.
2) Do I have to order the 670F3 lever left hand or right hand?
No handing call-out is needed. The 670F3 is field reversible, and the ML2000 lock it goes on uses a Quick Reversible latchbolt that re-hands without opening the lock case. One part covers both hands of door, which is why it works as a fleet spare.
3) I'm replacing a broken inside lever on a classroom door. Does ordering the 670F3 alone get me back in service?
If the lock case and outside trim are sound, the 670F3 is the inside lever only, sold as a replacement part. It restores interior operation without pulling the ML2000 lockbody out of the door. If the latch or deadbolt is also failing, you are replacing the lockbody, not the trim.
4) Does putting a 670F3 lever on the door keep my ML2000 fire rating intact?
The ML2000 mortise lock is UL/cUL listed to UL10C positive pressure, rated for 3-hour fire doors up to 4 ft x 10 ft single or 8 ft x 10 ft pair, and the 670F3 is factory trim for that series. Using the manufacturer's own listed trim is what keeps the assembly compliant, where substituting generic trim does not.
5) What door thickness and backset does the ML2000 trim set up for?
Standard is a 1-3/4 inch (44mm) door with a 2-3/4 inch (70mm) backset; other thicknesses are available as an option on the series. Trim spacing runs 3-5/8 inch center to center lever to cylinder and 2-7/16 inch lever to thumbturn, so the prep on the door has to match before the lever will sit right.
6) What lever designs and finishes can I get on the Corbin Russwin 670F3?
Four cast lever styles: 670F31 and 670F32 Dirke, 670F33 Essex, and 670F34 Lustra. Each is offered in three finishes, 613 Satin Bronze Oil-Rubbed, 625 Bright Chrome, and 626 Satin Chrome. Match the style number and finish to what is on the rest of the opening so the inside and outside trim read the same.
7) Is the ML2000 platform behind this lever tough enough for a high traffic school or hospital corridor?
It is ANSI/BHMA A156.13 Series 1000 Grade 1 for both operational and security, and UL cycle verified at 14.5 million cycles (Verification ID V875753). Grade 1 is the top commercial tier, which is the level specified for schools, healthcare and office corridors.
8) Is the 670F3 lever ADA compliant for accessible openings?
The ML2000 Series it belongs to is certified to ADA A117.1, and a lever handle is the operable style that satisfies accessible hardware requirements. The series also carries California State Fire Marshal and Windstorm/Hurricane certification.
9) Will the existing strike still catch after I swap the inside lever?
Swapping the inside lever doesn't change latch geometry. The ML2000 latchbolt is a two-piece anti-friction unit with a 3/4 inch (19mm) throw, the auxiliary latch has 9/16 inch (14mm) effective throw, and the deadbolt throws 1 inch into an ANSI straight lip strike measuring 4-7/8 x 1-1/4 inches with 1-1/8 inch lip to center. Leave the strike alone.
10) We key our building on Corbin Russwin L4. Does changing trim affect the keying?
No. The 670F3 is the inside lever and carries no cylinder. The ML2000 lock works with new or existing Corbin Russwin key systems and accepts most other manufacturers' cylinders; the factory cylinder is brass, 6-pin L4 keyway, 0-bitted as standard.
11) Can I change the lock function while I'm replacing the trim on an ML2054?
Twelve functions are configurable from a single ML2054 lockbody, so a function change is made at the lock rather than by buying a different case. Note that function is set in the lockbody, not by the 670F3 inside lever itself, and outside trim may need to change to suit the new function.
12) Is the trim thru-bolted, and does that matter for security?
ML2000 trim designs are thru-bolted, which ties the inside and outside trim together through the door for alignment and makes the lever harder to pull off the door than a screw-to-plate arrangement.
How fast can I get the Corbin Russwin 670F31-626 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 670F31-626 come with a warranty?
Absolutely. The Corbin Russwin 670F31-626 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 670F31-626?
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 670F31-626 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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