Corbin Russwin ML2058 Grade 1 ...
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$881.60
Corbin Russwin Corbin Russwin ML2058 Mortise Entrance Holdback Lever Lockset COR-ML2058-KEYED

Corbin Russwin ML2058 Grade 1 Mortise Entrance Holdback Lever Lockset

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Model: COR-ML2058-NSA-618
From the ML2000_Series Collection
$1,507.00
$881.60
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  • Corbin Russwin ADDER-CORBIN RUSSWIN-[KEYING]=KD - Keyed Different ADDER-CORBIN RUSSWIN-[KEYING]=KD - Keyed Different
  • Corbin Russwin ADDER-CORBIN RUSSWIN-[KEYING]=KA - Keyed Alike ADDER-CORBIN RUSSWIN-[KEYING]=KA - Keyed Alike

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Corbin Russwin ML2058-KEYED Mortise Entrance Holdback Lever Lockset Grade 1, Field Reversible

Commercial-Grade Mortise Lock with Holdback Function for High-Traffic Applications

The Corbin Russwin ML2058-KEYED is a Grade 1 mortise entrance holdback lever lockset from the ML2000 Series, engineered for demanding commercial, institutional, industrial, and government environments. Designed for 1-3/4" (44mm) standard door thickness, this lockset features a latchbolt operable by grip from either side unless the outside grip is locked, with the outside grip locked or unlocked by key or thumbturn. The latchbolt can be held in a retracted position by key or thumbturn, or released by key or thumbturn, providing true holdback functionality. Constructed of heavy-gauge steel with a one-piece stainless steel deadbolt measuring 19/32" (15mm) x 1-1/4" (32mm) x 1" (25mm) throw, this lockset delivers life safety and security in a single door prep. Note: Not approved for use on U.L. fire listed applications.

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
  • Hotels and Hospitality Properties
  • Industrial and Government Facilities
  • Multi-Tenant Residential 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, any door can become a highly secure barrier to intruders.

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise locks deliver professional-grade reliability with heavy-gauge steel construction and a one-piece stainless steel deadbolt, validated by a UL Cycle test completed at 14.5 Million Cycles (Verification ID: V875753). Backed by a 10 Year Limited warranty and featuring the patented Quick Reversible latchbolt, the ML2058-KEYED is engineered for demanding commercial applications where dependable performance and long-term security are 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 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
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Keyed:
Yes
Commercial/Residential:
Commercial
Function Description:
Latchbolt by grip either side, unless outside grip is locked.
Lock Type:
Mortise
Handle Type:
Lever
Lock Function:
Entrance/Office
Product Attribute:
Mortise Locks
Electronic:
No
Product Model:
ML2058
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 COR-ML2058-NSA-618 – Frequently Asked Questions

1) What does the holdback function on the Corbin Russwin ML2058 actually do?
The ML2058 is an entrance/office mortise lockset where the latchbolt works by the lever from either side unless the outside lever is locked. The outside lever is locked or unlocked by key or thumbturn. The holdback part: the latchbolt itself can be held retracted by key or thumbturn, so the door pushes open freely during business hours, then released the same way at close. That is the difference between this and a plain office function lock, and it is why it shows up on storefront-style entrances and back-of-house doors that need to stay open through a shift.
2) Do I have to specify handing when I order the ML2058 mortise lock?
Handing is not something you have to get right on the order for the lock body. The ML2058 uses the Quick Reversible latchbolt, so it is re-handed in the field without opening the lock case. One caveat on trim: the Dirke (DS) lever is offered as a left hand and a right hand version, so if you pick that lever style you do have to state the hand. The other lever designs, Armstrong, Citation, Essex, Lustra, Newport, Princeton and Regis, are not split that way.
3) Will the ML2058 work on a 1-3/8 inch door or a thick 2 inch door?
No, not as standard. The ML2058 is built for 1-3/4 inch (44mm) doors, which is the usual commercial thickness. Optional thicknesses are available from the ML2000 Series, but that is a special order and not what ships standard. For thinner or thicker openings, Hager's 3800 Series mortise locks cover 1-3/4 to 2-1/2 inches, and Baldwin's 6310 mortise lock body is listed for 1-3/8 inches and over.
4) Can I key the ML2058 into the Corbin Russwin system already on my building?
Yes. The ML2058 works with new or existing Corbin Russwin key systems, and the lock also accepts most other manufacturers' cylinders. Standard supply is a brass conventional 6-pin cylinder in the L4 keyway, 0-bitted. If your building runs large format interchangeable core, order CL6 for 6-pin LFIC less core or CL7 for 7-pin LFIC less core and drop in your own cores. If your locksmith is supplying the cylinder outright, order LC (less cylinder). Keying is specified as KD keyed different or KA keyed alike when you want a group of doors on one key.
5) How is the ML2058 different from a storeroom or classroom mortise lock?
Function is the whole difference. The ML2058 is entrance/office, meaning the outside lever can be left unlocked for the public or locked by key or thumbturn from inside, plus latchbolt holdback. A storeroom lock keeps the outside lever locked at all times and requires a key every entry, which is what Cal-Royal's NM8080 and Accentra's 8805FL do. A classroom function, like the Cal-Royal NM8070, is locked and unlocked only from the outside by key with no inside thumbturn. If the door is a tenant suite, an office, or a staff entrance that needs to be free during the day, entrance/office is the one. If it is a supply closet or an electrical room, go storeroom.
6) What is the closest alternative to the Corbin Russwin ML2058 from another brand?
For a like-for-like mechanical entrance/office mortise lockset, the Cal-Royal NM8050 is the nearest match in the set: Grade 1, entrance/office function, 1-3/4 inch door, with an auxiliary deadlatch. It is the straight functional equivalent if your building is not already standardized on a Corbin Russwin keyway. Where the ML2058 differs is the holdback feature and the ability to work into an existing Corbin Russwin key system. Sargent's 7925 is Grade 1 heavy duty with a single cylinder deadbolt but is corridor/dormitory function, not office, so it behaves differently at the door.
7) What is the closest cross-brand equivalent to a Corbin Russwin ML2058 entrance/office mortise lockset?
The Cal-Royal NM8050 is the nearest peer: a heavy duty Grade 1 mortise lockset with an Entrance/Office function and a 1-3/4 inch door thickness, matching the ML2058's Grade 1 rating, Entrance/Office function and 1-3/4 inch standard door thickness. The difference to confirm before you swap is the holdback feature - the ML2058 holds the latchbolt retracted by key or thumbturn, so if the opening relies on latch holdback for daytime free access you need to verify that on the substitute.
8) The opening needs a lock that always stays locked on the outside - what should I use instead of the ML2058?
The ML2058 is an entrance/office function: the latchbolt is operated by grip from either side unless the outside grip is locked, and it can be held retracted by key or thumbturn. For an opening that must never be left unsecured, a storeroom function is the right call. The Accentra 8805FL is a Grade 1 storeroom mortise lock in the 8800 Series, and the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset for 1-3/4 inch doors with an interchangeable core option.
9) Which mortise locks look like an ML2058 substitute but will not actually work in its place?
Several mortise-family parts are not lockset replacements. The Sargent 4874 is a double cylinder mortise deadbolt only - no latch or lever. The Sargent 130KB and 130W are mortise thumbturns, trim components rather than a lock. The Schlage L0170 is a half dummy trim with no latching function, and the Emtek 3102 Memphis and 3104 Hamilton are dummy mortise entrance locksets. The ML2058 by contrast is a keyed lever lockset with a 3/4 inch latchbolt and a one-piece stainless deadbolt.
10) The ML2058 is not approved for UL fire listed applications - what mortise lock should I spec on a fire rated opening?
On a fire door, look to a peer that carries a fire rating in its own right. The Falcon MA101 is a Grade 1 heavy duty mortise passage lock with a fire rating, and the Schlage LEMD-GRW is a Grade 1 ENGAGE Series wireless mortise lock rated 3 hours. Confirm the function you need matches - the MA101 is passage and the LEMD is a mobile enabled deadbolt with LED, not an entrance/office lock.
11) Is a Baldwin 6301 mortise lock body a drop-in for the Corbin Russwin ML2058?
No. The Baldwin 6301 entry/apartment lever by lever mortise lock body uses a 2-1/2 inch backset, while the ML2058 runs a 2-3/4 inch backset, so the door prep and cylinder centerline do not align. The Baldwin covers 1-3/4 inch and over door thickness. If you are matching an existing 2-3/4 inch mortise prep, stay with the ML2058 or another 2-3/4 inch backset lock such as the Hager 3850E.
12) Is the ML2058 a Grade 1 lock, and how much cycle life does it have?
Certified ANSI/BHMA A156.13 Series 1000, Operational and Security Grade 1, which is the heaviest mortise classification. Beyond the grade minimum, the ML2000 lock case completed a UL cycle test at 14.5 million cycles (Verification ID V875753). For a facility standardizing a spec across high traffic openings, that is the number to put on the submittal.
13) Does the ML2058 have a deadbolt, and how far does it throw?
Yes, it carries a one-piece stainless steel deadbolt measuring 19/32 x 1-1/4 inches with a full 1 inch (25mm) throw, which is what gets you the security credit on a single door prep. The latchbolt is a separate 2-piece mechanical unit with an anti-friction insert, 5/8 x 1 inch with a 3/4 inch (19mm) throw, and there is a deadlocking auxiliary latchbolt with 9/16 inch effective throw behind it. The anti-friction insert matters on doors with a strong closer, it takes less force to latch.
14) What lever and rose options do I pick from on the Corbin Russwin ML2058?
Nine lever designs: Armstrong (AS), Citation (CS), Dirke (DS), Essex (ES), Lustra (LS), Newport (NS), Princeton (PS) and Regis (RS), with Dirke split into left and right hand. Trim mounts on an A rose at 2-1/4 inch diameter, an F rose at 2-7/8 inch diameter, or an M or N escutcheon. If you are matching existing doors, measure the rose diameter on the lock you are replacing, that is usually what gives it away. Finishes run from 605 bright brass and 606 satin brass through 626 satin chrome, 630 satin stainless, 613 oil-rubbed bronze, 619 satin nickel, 722 black oxidized bronze and BSP black suede powder coat.
15) I need keypad or card access on this opening, not a key. Is the ML2058 the wrong lock?
It is, yes. The ML2058 is a purely mechanical keyed lockset with no electronics. For credential access in the same mortise prep, look at the TownSteel FME-2000 Series, Grade 1 heavy duty with RFID, the Dormakaba E-Plex 2066 pushbutton keyless mortise lock, or the Alarm Lock DL3500CR Trilogy, Grade 1 with 300 user codes. If you want the mechanical lock but need remote release, the ML20900 series offers Motorized Electric Latch Retraction, and Command Access ML190 gives field selectable fail safe or fail secure on 24VDC.
16) We need a classroom function mortise lock rather than entrance/office - what are the options?
The ML2058 is keyed as an Entrance/Office function with a single cylinder. For classroom duty, the Cal-Royal NM8070 is a heavy duty Grade 1 classroom mortise lockset for 1-3/4 inch doors, and the Marks USA LA318GJ is a Grade 1 classroom security indicator mortise lockset for 1-3/4 inch doors with an ANSI strike and a steel escutcheon measuring 8-1/2 inch H x 2-3/4 inch W x 7/16 inch.
17) Is there a non-keyed mortise lock I can use on interior doors that match the same openings as the ML2058?
The ML2058 is a keyed lockset with a conventional 6-pin L4 keyway cylinder. Where a door does not need keying, the Schlage PM010 is a Grade 1 passage latch mortise lock, non-keyed, for 1-3/4 inch doors; the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation; and the Hager 3850E is a Grade 1 office mortise lock with lever and escutcheon, non-keyed, on a 2-3/4 inch backset matching the ML2058's 2-3/4 inch backset.
18) We want to move from a keyed ML2058 to keypad or credential access on the same mortise prep - what are the choices?
The ML2058 is a mechanical, non-electronic lockset. For electronic access on a mortise opening, the Alarm Lock DL3500CR is a Grade 1 Trilogy electronic mortise lock with 300 user codes and a classroom function for 1-5/8 to 1-7/8 inch doors; the TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise lockset with RFID for 1-3/4 inch doors; and the Schlage CO-100-MS-40-KP is a Grade 1 standalone electronic mortise lock with a keypad reader and privacy function for 1-3/4 inch doors. Note the door thickness differences when choosing.
19) For a behavioral health or anti-ligature opening, what replaces the ML2058 lever trim?
The ML2058 ships with lever trim in styles such as Armstrong, Citation and Lustra on A rose, F rose, M or N escutcheon. Where ligature resistance drives the spec, the TownSteel MRX-L-01 is a Grade 1 heavy duty stainless steel anti-ligature lever mortise lockset in passage function for 1-3/4 inch doors, the MRX-A-01 is the same in a ligature resistant arch trim, and the Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset in satin stainless steel. All three are passage function rather than keyed entrance/office.
20) I only need the lock body, not a complete trimmed lockset - what are my options versus the ML2058?
The ML2058 is supplied as a complete keyed lever lockset with lever, rose or escutcheon and cylinder selections. If the trim is already on the door and only the case needs replacing, the BEST 45HCAC is a heavy duty mortise lock body in public entrance function with field reversible operation, and the 45HCAINL is a heavy duty 45HCA mortise lockbody with an intruder function. Both are bodies rather than complete sets, so the trim and cylinder must be carried over or ordered separately.
21) What mortise lock should I use for a dormitory or corridor opening instead of the ML2058 entrance/office?
The Sargent 7925 is a heavy duty Grade 1 dormitory exit function mortise lock with rose trim and a single cylinder deadbolt in the 7900 Series. The ML2058 is also single cylinder keyed, but its function is Entrance/Office with latchbolt holdback, so the two behave differently on a dorm corridor door where the deadbolt is expected to project on exit.
22) We need a privacy mortise lock for restrooms on the same project as the ML2058 - what matches?
The ML2058 is a keyed entrance/office lock and is not suited to a bath or bedroom door. For privacy on the same project, the Cal-Royal NM8440 is a heavy duty Grade 1 privacy mortise lockset with deadbolt for 1-3/4 inch doors, and the Hager 3840S is a Grade 1 privacy mortise lock on a 2-3/4 inch backset covering 1-3/4 inch to 2 inch doors, which matches the ML2058's 2-3/4 inch backset prep.
23) Is there a vandal resistant version of the ML2000 mortise lock for abuse-prone doors?
Yes. The ML2000VR option uses vandal-resistant stainless steel escutcheons with tapered edges and Torx pin tamper-resistant screws. Paired with Corbin Russwin Pyramid or Access 3 high-security cylinders it is aimed at openings that take deliberate abuse. Across the standard line, trim is thru-bolted for alignment and added security, and status indicator options are available on sectional and escutcheon trim if staff need to see locked or unlocked at a glance.
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Does the Corbin Russwin COR-ML2058-NSA-618 come with a warranty?
Absolutely. The Corbin Russwin COR-ML2058-NSA-618 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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