Corbin Russwin ML2020 Grade 1 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,496.14
$890.40
Corbin Russwin Corbin Russwin ML2020 Mortise Privacy, Bedroom or Bathroom Lockset COR-ML2020

Corbin Russwin ML2020 Grade 1 Mortise Privacy, Bedroom or Bathroom Lockset

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Model: ML2020-NSA-626
From the ML2000_Series Collection
$1,496.14
$890.40
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In Stock (leaves warehouse same day if ordered before 3pm ET)

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Corbin Russwin ML2020 Mortise Privacy Lockset Bedroom & Bathroom, Grade 1, Field Reversible, 1-3/4" Door

Commercial-Grade Mortise Privacy Lock for Bedroom and Bathroom Applications

The Corbin Russwin ML2020 is a Grade 1 mortise privacy lockset engineered for bedroom and bathroom applications in demanding commercial, institutional, industrial, and government environments. Conforming to ANSI function F02, this lockset allows latchbolt retraction by grip from either side when the deadbolt is retracted, with the deadbolt operated by thumbturn grip from inside or by emergency release tool from outside. Designed for standard 1-3/4" (44mm) door thickness and featuring a field-reversible handing, the ML2020 is part of the ML2000 Series — a heavy-gauge steel mortise lock platform tested to an exceptional 14.5 million cycles. The included ANSI straight lip strike measures 4-7/8" (124mm) x 1-1/4" (32mm) x 1-1/8" (29mm) lip to center, ensuring precise, code-compliant installation.

Professional Features & Benefits

  • Door Thickness Compatibility: Designed for standard 1-3/4" (44mm) door thickness, accommodating the most common commercial door preparations.
  • ANSI Standard Strike Dimensions: Includes ANSI straight lip strike measuring 4-7/8" (124mm) x 1-1/4" (32mm) x 1-1/8" (29mm) lip to center for precise, reliable installation.
  • Exceptional Durability 14.5 Million Cycles: UL cycle testing completed above and beyond standard requirements at 14.5 million cycles (Verification ID: V875753), ensuring long-term reliability in high-traffic applications.
  • Patented Quick Reversible Latchbolt: Field-reversible handing allows reversal of hands without disassembling the lock case, reducing installation time and labor costs.
  • Heavy-Gauge Steel Construction: Lockbody constructed of heavy-gauge steel with a 1" stainless steel deadbolt, providing a formidable barrier against intrusion and abuse.
  • ANSI F02 Privacy Function: Latchbolt operates by grip from either side when deadbolt is retracted; deadbolt set by thumbturn inside or released by emergency tool outside — no simultaneous deadbolt and latch retraction, non-panic release.
  • Vandal-Resistant Security Option: Available in ML2000VR (Vandal Resistant) configuration featuring stainless steel escutcheons with tapered edges and Torx® pin tamper-resistant screws for enhanced security.
  • Broad Cylinder Compatibility: Compatible with new or existing Corbin Russwin key systems and accepts cylinders from most other manufacturers for flexible integration.
  • Manufacturer Warranty: Backed by a 10 Year Limited warranty for added confidence and long-term protection.

Technical Specifications

  • Subcategory: Mortise Locks
  • Product Group: Mechanical Locks
  • Series: ML2000 Series
  • Grade: Grade 1
  • Keyed Function: Non-Keyed
  • 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
  • ANSI/BHMA: F02
  • Product Subgroup: Mortise Locks and Trim
  • Product Type: Mortise Locks
  • Keyed: No
  • Commercial/Residential: Commercial
  • Function Description: Latchbolt by grip* either side, when deadbolt is retracted. Deadbolt by thumbturn grip inside or by emergency release tool outside.
  • Lock Type: Mortise
  • Lock Function: Privacy/Bed/Bath
  • Product Attribute: Mortise Locks
  • Electronic: No
  • Product Model: ML2020
  • Collection: ML2000 Series
  • Product Function: Privacy/Bed/Bath
  • Door Hand Direction: Field Reversible
  • Door Thickness Range: 1-3/4"
  • Product Category: Mechanical Locks
  • Product Substrate: Brass or Bronze
  • Department: Door Hardware

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness (1-3/4" standard), stile width, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and/or frame surfaces.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the mortise lockbody and thru-bolted trim to door and frame per manufacturer torque specifications.
  5. If handing reversal is required, utilize the patented Quick Reversible latchbolt feature to reverse hands without disassembling the lock case.
  6. Install the ANSI straight lip strike (4-7/8" x 1-1/4" x 1-1/8") on the door frame and adjust for proper latch engagement and smooth operation.
  7. Test thumbturn deadbolt operation, latchbolt retraction from both sides, and emergency release tool function. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Commercial Office Buildings Private Offices and Restrooms
  • Educational Facilities Faculty Restrooms and Private Rooms
  • Healthcare Institutions Patient Rooms and Staff Restrooms
  • Hospitality Hotel Guest Rooms and Bathrooms
  • Retail Establishments Employee and Customer Restrooms
  • Industrial and Government Facilities Private and Restroom Doors
  • Multi-Tenant Residential Properties Common Area Restrooms

Tamper-Resistant Design

The ML2000VR (Vandal Resistant) Series option features stainless steel escutcheons with tapered edges and Torx® pin tamper-resistant screws, providing a vandal-resistant barrier for high-risk environments. When paired with Corbin Russwin patented high-security Pyramid or Access 3® cylinders, any door can become a formidable 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 1" stainless steel deadbolt, UL cycle tested to an outstanding 14.5 million cycles (Verification ID: V875753) — far exceeding standard requirements. Backed by a 10 Year Limited warranty and available in a wide variety of trim designs and finishes including the Vineyard™ and Muséo® Collections, the ML2020 is engineered for demanding commercial applications where dependable performance, security, and aesthetics are all essential.

Product Specs

Subcategory:
Mortise Locks
Product Group:
Mechanical Locks
Series:
ML2000 Series
Grade:
Grade 1
Keyed Function:
Non-Keyed
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
ANSI/BHMA:
F02
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Keyed:
No
Commercial/Residential:
Commercial
Function Description:
Latchbolt by grip* either side, when deadbolt is retracted. Deadbolt by thumbturn grip inside or by emergency release tool outside.
Lock Type:
Mortise
Lock Function:
Privacy/Bed/Bath
Product Attribute:
Mortise Locks
Electronic:
No
Product Model:
ML2020
Collection:
ML2000_Series
Product Function:
Privacy/Bed/Bath
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 ML2020-NSA-626 – Frequently Asked Questions

1) How does the ML2020 privacy function actually work on a bathroom door, and can someone get in from outside in an emergency?
The ML2020 runs ANSI F02. The latchbolt retracts by lever from either side as long as the deadbolt is back. The occupant throws the 1 inch stainless deadbolt with the inside thumbturn, and from the corridor side that deadbolt is released with an emergency release tool. Two things to be clear on: it is non-keyed, so there is no cylinder and no key override, and turning the outside lever does not retract the deadbolt and latch together. Staff need to carry the emergency tool to get into a locked restroom or bedroom.
2) Do I have to specify handing when ordering a Corbin Russwin ML2020?
Not for the lock body. The ML2020 is field reversible, and the Quick Reversible latchbolt lets you flip the hand without opening the lock case, so one lock covers left and right openings. The exception is on the trim side: the Dirke (DS) lever is ordered as a left hand or a right hand part, so if you spec that lever you do need to state the hand. Every other lever in the range is hand neutral.
3) Will the ML2020 latch into the strike that is already in my frame?
It ships with an ANSI straight lip strike measuring 4-7/8 x 1-1/4 x 1-1/8 inches lip to center, and the latch is a 3/4 inch latchbolt. If your frame already carries a standard ANSI mortise strike cutout, the supplied strike drops into that same prep. If the frame is prepped for a cylindrical lock or a non-ANSI strike, the frame has to be modified or the strike box filled and recut.
4) I need a Grade 1 mortise privacy lock but not necessarily Corbin Russwin. What else is comparable?
Two direct alternatives sit in the same slot. The Cal-Royal NM8440 is a heavy duty Grade 1 privacy mortise lockset with a deadbolt, also for 1-3/4 inch doors. The Hager 3840S is a Grade 1 privacy mortise lock on a 2-3/4 inch backset and covers 1-3/4 to 2 inch doors, so it is the one to reach for if some of your openings are thicker than 1-3/4. If the requirement is electronic rather than mechanical, the Schlage CO-100 is a standalone Grade 1 mortise lock in privacy function with a keypad reader for 1-3/4 inch doors.
5) Is the Schlage CO-100 privacy mortise lock a drop-in for a Corbin Russwin ML2020?
Both are Grade 1 privacy function mortise locks for a 1-3/4 inch door, but they are not the same class of product. The Schlage CO-100 is a standalone electronic mortise lock with a keypad reader; the Corbin Russwin ML2020 is a mechanical, non-electronic lockset whose deadbolt is set by thumbturn inside and released by emergency tool outside. Swapping to the CO-100 brings credential management and the power and programming that goes with it; the ML2020 needs neither.
6) What is the closest Grade 1 mortise privacy lock to the Corbin Russwin ML2020 from another manufacturer?
The Cal-Royal NM8440 is a heavy duty Grade 1 privacy mortise lockset with a deadbolt, and like the ML2020 it is built for a 1-3/4 inch door. Both carry Grade 1 and both are privacy/bed/bath function, so the NM8440 covers the same restroom and bedroom openings. The ML2020 differs in that it is field reversible and takes trim from the ML2000 Series lever and rose range, so the choice usually comes down to which trim family the rest of the building already uses.
7) Is there another Grade 1 privacy mortise lock that fits a thicker door than 1-3/4 inch?
The Hager 3840S is a Grade 1 privacy mortise lock with a 2-3/4 inch backset covering doors from 1-3/4 inch through 2 inch. The Corbin Russwin ML2020 is built for a standard 1-3/4 inch door thickness, so on an opening measuring over 1-3/4 inch the 3840S is the one to spec.
8) The door does not need to lock at all - what mortise lock replaces a privacy lockset on a hall or closet door?
For an opening that only needs the latch held, the Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock for a 1-3/4 inch door, and the Falcon MA101 is a Grade 1 heavy duty mortise passage lock that is field reversible and fire rated. The Corbin Russwin ML2020 carries the ANSI F02 privacy function with a thumbturn deadbolt inside and emergency release outside, which is the part a passage lock leaves out.
9) What mortise lock should I use instead of the ML2020 on a door that needs a key?
The ML2020 is non-keyed. For a keyed opening in the same mortise prep, the Accentra 8805FL is a Grade 1 storeroom mortise lock from the 8800 Series, the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset with an interchangeable core option, and the Cal-Royal NM8050 is a Grade 1 office/entrance mortise lockset with an auxiliary deadlatch, both Cal-Royals for a 1-3/4 inch door. Storeroom keeps the outside lever locked at all times; office/entrance lets staff leave the lever unlocked during business hours.
10) For a behavioral health or patient room, is the ML2020 the right privacy lock or is there an anti-ligature option?
For anti-ligature openings the TownSteel MRX-L-01 is a Grade 1 heavy duty stainless steel anti-ligature lever mortise lockset and the MRX-A-01 is the ligature resistant arch trim version, both for a 1-3/4 inch door, and the Marks USA 5PDN is a Grade 1 ligature resistant, ADA compliant hospital passage push/pull paddleset in satin stainless. Those three are passage function. The Corbin Russwin ML2020 is the privacy function choice, carrying ANSI F02 with a thumbturn deadbolt, and its trim comes in lever styles such as Armstrong, Lustra and Newport on A or F rose or M or N escutcheon.
11) What do I need to choose when ordering an ML2020 privacy lockset?
Three things beyond the lock itself. Lever design: Armstrong, Citation, Dirke, Essex, Lustra, Newport, Princeton or Regis. Trim style: A rose at 2-1/4 inch diameter, F rose at 2-7/8 inch diameter, or the M or N escutcheon. And finish, from 14 options including 605 bright brass, 626 satin chrome, 630 satin stainless, 613 oil-rubbed satin bronze and BSP black suede powder coat. No cylinder or keying to specify, since privacy function is non-keyed.
12) Is a mortise privacy lock the right choice over a cylindrical one for a commercial restroom?
A mortise lock like the ML2020 puts a heavy-gauge steel case inside the door edge with a separate 1 inch stainless deadbolt, and it is UL cycle tested to 14.5 million cycles, which is what you want on a high traffic restroom or patient room door. The cost is the door prep: a mortise pocket has to be routed, so it is a heavier install than a bored lock. If the door is already prepped for a cylindrical lock and traffic is lighter, a bored lock such as the Schlage PC10 Grade 1 passage cylindrical is the simpler retrofit, though passage has no privacy locking at all.
13) Can I put my building's existing keyway on an ML2020?
There is nothing to key. The ML2020 privacy function is non-keyed and takes no cylinder, so it stays outside your master key system entirely. Other functions in the ML2000 Series do accept cylinders and work with new or existing Corbin Russwin key systems, and take cylinders from most other manufacturers. If you are standardizing a floor, key the entry and storeroom doors and leave the bed and bath doors on the ML2020 thumbturn.
14) Is there a tamper-resistant version of the Corbin Russwin ML2020 for a public restroom that gets abused?
Yes, the ML2000VR vandal resistant configuration. It uses stainless steel escutcheons with tapered edges and Torx pin tamper-resistant screws, which is the build to spec for a public or high-risk restroom where standard screws get attacked. Standard ML2020 trim is the right call for staff-only and guest room doors.
15) Does the ML2020 privacy lock meet Grade 1 for a hospital or school spec?
The ML2020 is a Grade 1 mortise lock in ANSI function F02, which is the privacy/bed/bath designation a specifier writes for patient rooms, faculty restrooms and staff washrooms. Grade 1 is the top ANSI/BHMA operational grade for commercial door hardware. It is a commercial product, not a residential one, and UL cycle testing was completed at 14.5 million cycles under verification ID V875753.
16) Will a Sargent 130KB thumbturn work as a replacement for the privacy thumbturn on an ML2020?
No. The Sargent 130KB is a standard mortise thumbturn from the 8200 Series and the 130W is a mortise thumbturn with a round backplate from the 7800 Series - both are trim components for Sargent mortise bodies. The Corbin Russwin ML2020 is a complete ML2000 Series mortise lockset, and its thumbturn grip is part of the ML2000 trim range. Order the thumbturn from the same series as the lock body it mounts to.
17) The classroom next to the restroom needs a lock too - what mortise lock covers that instead of the ML2020?
The Cal-Royal NM8070 is a Grade 1 heavy duty classroom mortise lockset with an auxiliary deadlatch for a 1-3/4 inch door, the same door thickness the Corbin Russwin ML2020 is built for. The ML2020 is privacy/bed/bath function, so it is the restroom side of that pair and the NM8070 is the classroom side.
18) Can a Schlage L0170 dummy trim be used where an ML2020 is called out?
Only on an inactive leaf. The Schlage L0170 is a Grade 1 mortise non-keyed half dummy trim for a 1-3/4 inch door - the lever is fixed and there is no latch or bolt behind it. The Corbin Russwin ML2020 has a working 3/4 inch latchbolt operated by grip from either side plus a thumbturn deadbolt, so any door that actually latches needs the ML2020, not dummy trim.
19) Is a Sargent 4874 mortise deadbolt an alternative to an ML2020 on a bathroom door?
They do different jobs. The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset from the 4870 Series - bolt only, keyed both sides, no latch or lever. The Corbin Russwin ML2020 combines a 3/4 inch latchbolt worked by grip from either side with a 1 inch stainless steel deadbolt thrown by thumbturn inside and released by emergency tool outside, which is what a bathroom needs so an occupant can secure it without a key and staff can get in.
20) Is the Schlage PC10 passage lock interchangeable with the ML2020?
No, and the difference is the door prep. The Schlage PC10 is a Grade 1 passage cylindrical lock with a rose for a 1-3/4 inch door - it goes into a bored cylindrical prep. The Corbin Russwin ML2020 is a mortise lock, requiring a pocket routed in the door edge for the lock case. A door prepped for one will not take the other without rework, and the PC10 is passage function besides, with no privacy bolt.
21) Will the ML2020 match the other Corbin Russwin locks already on my floor?
Across a building, the ML2000 Series shares lever designs and finishes, so an ML2020 on the bathroom door can carry the same lever and finish as the keyed functions on the corridor doors. Nine lever designs and 14 finishes are offered, including the common commercial 626 satin chrome and 630 satin stainless. Match the lever design, the rose or escutcheon style, and the finish number on your existing hardware and the doors read as one set.
22) Is the ML2020 a solid brass lock or plated steel?
Trim substrate on the ML2020 is brass or bronze, and the lock case itself is heavy-gauge steel with a 1 inch stainless steel deadbolt. That combination is why the finish list runs to real bronze and brass numbers like 611 bright bronze and 613 oil-rubbed satin bronze rather than paint-only options.
23) What is the difference between the A rose and F rose on a Corbin Russwin ML2020?
Size. The A rose is 2-1/4 inch diameter and the F rose is 2-7/8 inch. The larger F rose covers more of the door face, which helps when you are replacing older trim that left a wider footprint or scarring. The M and N escutcheons are the full plate options and cover the most area of all. Choose the plate that hides what the previous hardware left behind.
24) Does the ML2020 need power or batteries?
No. The ML2020 is a fully mechanical mortise lock with no electronics, so nothing changes when power drops and there are no batteries to maintain across a fleet of restroom doors. If you do want an electrified privacy opening, the Schlage CO-100 is a standalone electronic mortise lock in privacy function with a keypad reader.
25) What is the difference between the ML2020 and a Baldwin 6301 mortise lock body?
The Baldwin 6301 is an entry/apartment mortise lock body with a 2-1/2 inch backset, offered knob by knob or, as the 6301LS, lever by lever, for doors 1-3/4 inch and over. The Corbin Russwin ML2020 is a privacy/bed/bath lockset built for a 1-3/4 inch door in brass or bronze with lever trim on a 2-1/4 inch A rose, 2-7/8 inch F rose, or M or N escutcheon. Entry/apartment secures a unit door from outside; privacy secures a bathroom or bedroom from inside.
26) If I want the same restroom function with satin chrome or satin stainless trim, does the ML2020 cover it or do I need a different brand?
The Corbin Russwin ML2020 covers it directly - finishes run from 626 satin chrome and 630 satin stainless steel through 605 bright brass, 613 satin bronze oil-rubbed, 619 satin nickel and BSP black suede powder coat. Among comparable privacy mortise locks, the Marks USA 5PDN is offered in satin stainless steel and the TownSteel MRX-A-01 in satin stainless, but both are passage function rather than privacy.
How fast can I get the Corbin Russwin ML2020-NSA-626 delivered?
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Can I return it if it doesn’t work for me?
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Does the Corbin Russwin ML2020-NSA-626 come with a warranty?
Absolutely. The Corbin Russwin ML2020-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 ML2020-NSA-626?
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