Corbin Russwin ML2048 Grade 1 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,635.56
$970.79
Corbin Russwin Corbin Russwin ML2048 Mortise Entrance Lever Lockset COR-ML2048-KEYED

Corbin Russwin ML2048 Grade 1 Mortise Entrance Lever Lockset

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Model: COR-ML2048-NSA-626
From the ML2000_Series Collection
$1,635.56
$970.79
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,635.56
$970.79
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Corbin Russwin ML2048-KEYED Mortise Entrance Lever Lockset Grade 1, Field Reversible, 1-3/4" Door

Commercial-Grade Mortise Security for Entrance and Apartment Applications

The Corbin Russwin ML2048-KEYED is a Grade 1 mortise entrance lever lockset from the ML2000 Series, engineered for demanding commercial, institutional, industrial, and government applications. Designed for 1-3/4" (44mm) standard door thickness, this lockset delivers ANSI function F8/F10 operation with a 3/4" latchbolt and a 1" stainless steel deadbolt, providing both life safety and security in a single door preparation. Constructed of heavy-gauge steel with a patented Quick Reversible latchbolt and field-reversible handing, the ML2048 is ideal for offices, schools, hospitals, hotels, and other high-traffic environments. The ML2000 Series is backed by a 10-year warranty and has been UL cycle tested to an exceptional 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
  • Multi-Tenant Residential and Apartment Buildings
  • Government and Municipal Buildings
  • Industrial and Institutional Facilities

Tamper-Resistant Design

The ML2000VR (Vandal Resistant) Series variant features vandal-resistant stainless steel escutcheons with tapered edges and Torx® pin tamper-resistant screws, providing a formidable barrier against abuse and unauthorized access attempts. When paired with Corbin Russwin's patented high-security Pyramid or Access 3® cylinders, the ML2048 delivers a comprehensive security solution for any commercial door application.

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise locks are built to Grade 1 standards from heavy-gauge steel with a 1" stainless steel deadbolt and patented Quick Reversible latchbolt, UL cycle tested to an outstanding 14.5 million cycles (Verification ID: V875753) for proven long-term reliability. The ML2048-KEYED is backed by a 10-year warranty, reflecting Corbin Russwin's commitment to quality and durability in the most demanding commercial environments. Engineered for offices, schools, hospitals, hotels, and high-traffic institutional facilities where dependable entrance security is essential.

Product Specs

Subcategory:
Mortise Locks
Product Group:
Mechanical Locks
Series:
ML2000 Series
Grade:
Grade 1
Keyed Function:
Single 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"
ANSI/BHMA:
F08/F10
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 key outside or by grip either side, unless outside grip is locked by toggle-action stop. Deadbolt by key outside or by thumbturn grip inside. Inside grip free when deadbolt is retracted.
Lock Type:
Mortise
Handle Type:
Lever
Lock Function:
Apartment/Entrance
Product Attribute:
Mortise Locks
Electronic:
No
Product Model:
ML2048
Collection:
ML2000_Series
Product Function:
Apartment/Entrance
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-ML2048-NSA-626 – Frequently Asked Questions

1) What is the ML2048 mortise lockset designed for?
The ML2048 is an entrance function mortise lockset. It locks and unlocks from inside with thumbturn. Outside requires key to unlock. Ideal for main entry doors in commercial buildings.
2) What door thickness does this lockset accommodate?
Standard mortise locksets typically fit 1-3/4" to 2-1/4" door thickness. Verify your specific door thickness and check manufacturer specifications for compatibility.
3) How do I determine the correct handing for this lockset?
Stand on the side where hinges are not visible. If door opens toward you and hinges are on right, it's right hand reverse. If hinges are on left, it's left hand reverse. Specify handing when ordering.
4) What grade rating does the ML2048 carry?
Corbin Russwin mortise locksets typically meet Grade 1 ANSI/BHMA standards. This provides heavy-duty performance for high-traffic commercial applications. Verify specific grade rating on product documentation.
5) What backset options are available?
Standard mortise locksets offer 2-3/4" backset. Some models accommodate 2-3/8" with field adjustments. Check your door preparation and specify required backset when ordering.
6) Does this lockset meet fire door requirements?
Many Corbin Russwin mortise locksets are available with fire ratings up to 3 hours. Verify specific fire rating requirements and ensure lockset matches door assembly rating.
7) What cylinder type does the ML2048 use?
This lockset uses standard mortise cylinders. Available in various keyways including Best, Falcon, and SFIC formats. Specify desired cylinder type and keyway when ordering.
8) What mortise case size is required for installation?
Standard mortise case is typically 1" wide by 4-1/2" tall. Door must be mortised to accommodate case body, faceplate, and cylinder. Use manufacturer template for precise cutout dimensions.
9) How do I adjust the spring tension on the lever?
Spring tension is factory set in mortise locksets. If lever return is weak, check for worn springs in the case assembly. Replacement typically requires locksmith service or case disassembly.
10) Are replacement parts available for this lockset?
Yes, Corbin Russwin offers replacement parts including levers, cylinders, cases, and trim components. Have model number and finish available when ordering parts for proper matching.
11) What other ML2000 series functions are available?
The ML2000 series includes classroom, storeroom, office, apartment, and privacy functions. Each provides different locking sequences for specific applications. Browse our Corbin Russwin selection for compatible options.
How fast can I get the Corbin Russwin COR-ML2048-NSA-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 COR-ML2048-NSA-626 come with a warranty?
Absolutely. The Corbin Russwin COR-ML2048-NSA-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 COR-ML2048-NSA-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 COR-ML2048-NSA-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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