Corbin Russwin 402F31 Grade 1 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$58.99
$52.28
Corbin Russwin 402F31 Grade 1 ML2000 Armored Front for Deadbolt, Latchbolt, Toggle

Corbin Russwin 402F31 Grade 1 ML2000 Armored Front for Deadbolt, Latchbolt, Toggle

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Model: 402F31-626
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$58.99
$52.28
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Corbin Russwin 402F31 ML2000 Armored Front for Deadbolt, Latchbolt, and Toggle Mortise Lock

Commercial-Grade Mortise Lock Armor Front Replacement Component

The Corbin Russwin 402F31 is a standard replacement mortise armor front engineered for the ML2000 and ML2000HS series commercial Grade 1 mortise locks. Serving as an integral component of the mortise lock body, this armored front delivers a finished, professional appearance while protecting the inner workings of the lock mechanism. The 402F31 is specifically specified for lock functions that include a deadbolt, a latchbolt, and a toggle, making it a precise fit for those ML2000 series configurations requiring all three functions.

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 components are built to commercial Grade 1 standards, delivering the professional-grade reliability and durability required in high-traffic commercial environments. The 402F31 armored front is a precision-engineered replacement part designed to maintain the integrity and appearance of ML2000 and ML2000HS series mortise lock installations. Engineered for demanding commercial applications where dependable performance and long-term serviceability are essential.

Product Specs

Product Group:
Cylinder Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Armored Front
Commercial/Residential:
Commercial
Subcategory:
Parts and Accessories
For Use With:
ML2000Mortise Lock; Deadbolt; Latchbolt; Toggle
Product Function:
Mortise Armor Front
Department:
Door Hardware

Corbin Russwin 402F31-626 – Frequently Asked Questions

1) What exactly is the Corbin Russwin 402F31, and which mortise lock functions does it fit?
The 402F31 is the armored front plate for Corbin Russwin ML2000 and ML2000HS series mortise locks, the face plate that mounts on the door edge over the lock case. It is the front specified for functions that include a deadbolt, a latchbolt, and a toggle together. If your lock case has all three, this is the matching front; a latch-only or deadbolt-only function takes a different front.
2) Will the 402F31 armored front line up with my existing ML2000 bolt cutouts?
It will if your lock case carries the standard ML2000 bolt package: a 3/4 inch throw two-piece anti-friction latchbolt with a 9/16 inch effective throw deadlocking auxiliary latch, and a one-piece stainless deadbolt with a 1 inch throw. The 402F31 is cut for deadbolt, latchbolt, and toggle. A case without the toggle or without the deadbolt uses a different front and the openings will not match.
3) I manage a building with fire rated openings. Is replacing the armored front on an ML2000 acceptable on a fire door?
The ML2000 series is UL/cUL listed to UL10C positive pressure for 3-hour fire doors up to 4 ft x 10 ft single or 8 ft x 10 ft pair, and the armored front is part of that listed assembly. Use the correct Corbin Russwin front for the lock function so the assembly stays as listed, and keep the whole lock as originally specified.
4) What size is the Corbin Russwin ML2000 armored front and what material is it?
It measures 8 x 1-1/4 inches and is made of wrought brass, bronze, or stainless steel depending on the finish ordered. That 8 inch length is what covers the ML2000 heavy-gauge steel lock case, which measures 5-7/8 x 4 x 15/16 inches, plus the bolt cutouts above and below.
5) What finishes does the Corbin Russwin 402F31 armored front come in?
Four: 612 satin bronze, 619 satin nickel, 626 satin chrome, and 630 satin stainless steel. Pick the one that matches the lever trim and strike already on the opening, since the front is the visible part of the lock on the door edge.
6) Does swapping in a new armored front affect the handing of an ML2000 mortise lock?
No. The front is a flat face plate and is not handed. Handing on the ML2000 is set by the Quick Reversible latchbolt, which is re-handed without taking the lock case apart, so you can pull the front, reverse the latch, and put the same front back on.
7) Does the ML2000 mortise lock this front belongs to fit a 1-3/4 inch door, and what backset?
Yes, the ML2000 series is built for 1-3/4 inch (44mm) doors as standard, with optional thicknesses available, and runs a 2-3/4 inch (70mm) backset. That is the standard commercial mortise prep, so the 402F31 front seats in the same door edge mortise you already have.
8) Is the ML2000 lock behind this armored front Grade 1, and how many cycles is it rated for?
ANSI/BHMA A156.13 Series 1000, Operational and Security Grade 1, and tested to 14.5 million cycles (UL verification ID V875753). It also meets ADA A117.1, carries California State Fire Marshal approval, and is windstorm/hurricane certified, which is why it turns up in schools, hospitals, and government work.
9) What else might I need when I open up an ML2000 mortise lock to replace the armored front?
Check the strike and the cylinder while the lock is out. The ML2000 uses an ANSI straight lip strike, 4-7/8 x 1-1/4 inches with 1-1/8 inch lip to center, and a brass 6-pin L4 keyway cylinder supplied 0-bitted as standard. Center to center spacing is 3-5/8 inches knob or lever to cylinder and 2-7/16 inches knob or lever to thumbturn, so a mismatched front will show immediately against those holes.
10) Can I keep my existing cylinder when servicing an ML2000 mortise lock?
Yes. The ML2000 works with new or existing Corbin Russwin key systems and accepts most other manufacturers' cylinders, so a building already keyed on another system can usually stay on it. The armored front does not change cylinder compatibility either way.
How fast can I get the Corbin Russwin 402F31-626 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 402F31-626 come with a warranty?
Absolutely. The Corbin Russwin 402F31-626 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 402F31-626?
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 402F31-626 from ZenSupply?
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