TownSteel MSS Series Heavy Dut...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$502.00
$498.42
TownSteel TownSteel MSS Series Privacy Function - Heavy Duty Sectional Mortise Lock , Non-Keyed TWS-MSS-22

TownSteel MSS Series Heavy Duty Sectional Mortise Lock, ANSI Grade 1 Privacy Function, Non-Keyed

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Model: MSS-R-T-22-626
$502.00
$498.42
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$502.00
$498.42
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TownSteel MSS Series Heavy Duty Sectional Mortise Lock, ANSI Grade 1 Privacy Function, Non-Keyed

The TownSteel MSS Series Heavy Duty Sectional Mortise Lock is an ANSI Grade 1 privacy-function lock engineered for single opening, stand-alone applications or integration into sophisticated access control systems. Featuring a 2-3/4" backset, a 3/4" projection stainless steel split anti-friction latch bolt, and a 1-1/4" x 8" stainless steel faceplate, this non-keyed lock is built for heavy-duty commercial performance. The sectional trim design pairs a forged brass/cast zinc lever with a 10-9/16" x 2-3/8" x 9/32" brass escutcheon for durable, long-lasting operation.

Key Features

  • Standard Backset: 2-3/4" backset for compatibility with standard mortise lock door preparations.
  • Stainless Steel Latch Bolt: 3/4" projection split anti-friction latch bolt constructed of stainless steel for smooth, reliable operation.
  • Heavy-Duty Faceplate: 1-1/4" x 8" stainless steel faceplate for durable, long-lasting performance.
  • Brass Escutcheon: 10-9/16" x 2-3/8" x 9/32" brass escutcheon trim plate for a refined commercial appearance.
  • Forged Brass/Cast Zinc Lever: Lever parameters constructed of forged brass/cast zinc, plated to match finish symbols, for durability and aesthetic consistency.
  • Sectional Trim Design: Sectional trim configuration suited for single opening, stand-alone applications or integration into sophisticated access control systems.
  • Optional Status Sensors: Available REX (request-to-exit), PRIV (privacy), DAJ (door ajar), and MKO (mechanical key override) sensors for enhanced monitoring capability.
  • Stainless Steel Guard Bolt and Strike: Stainless steel guard bolt and ANSI strike (plated/stainless steel) provide added security and corrosion resistance.

Certifications & Compliance

  • ANSI Grade 1 Heavy Duty Mortise Lock
  • 2-Year Manufacturer's Warranty

Technical Specifications

  • Series: MSE Series
  • Product Group: Mechanical Locks
  • Product Subgroup: Mortise Locks and Trim
  • Product Type: Mortise Locks
  • Subcategory: Mortise Locks
  • Keyed Function: Non-Keyed
  • Commercial/Residential: Commercial
  • Keyed: Yes
  • Lock Function: Non-Keyed
  • Product Attribute: Mortise Locks
  • Electronic: No
  • Product Function: Privacy/Bed/Bath
  • Product Category: Mechanical Locks
  • Department: Door Hardware

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Hospitality and Hotel Properties
  • Multi-Tenant Residential Properties
  • Restroom and Privacy Door Applications

Why TownSteel MSS?

TownSteel MSS Series mortise locks deliver professional-grade reliability with stainless steel latch bolts, guard bolts, and faceplates engineered for demanding commercial applications. This ANSI Grade 1 heavy duty sectional mortise lock is built for dependable, long-term performance in high-traffic privacy applications such as restrooms and bedrooms.

Product Specs

Series:
MSE Series
Product Group:
Mechanical Locks
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Subcategory:
Mortise Locks
Keyed Function:
Non-Keyed
Commercial/Residential:
Commercial
Lock Type:
Mortise
Keyed:
Yes
Lock Function:
Non-Keyed
Grade:
Grade 1
Duty Level:
Heavy Duty
Product Attribute:
Mortise Locks
Electronic:
No
Product Function:
Privacy/Bed/Bath
Product Category:
Mechanical Locks
Department:
Door Hardware

TownSteel MSS-R-T-22-626 – Frequently Asked Questions

1) Will the TownSteel MSS privacy mortise lock fit a door already prepped for a 2-3/4 inch backset mortise lock?
Yes. The MSS Series mortise lock is built on a 2-3/4 inch backset with a 1-1/4 x 8 inch stainless steel faceplate, which is the standard commercial mortise pocket and faceplate size. If the existing prep is a standard ANSI mortise pocket at 2-3/4 inch backset, the lock body drops in. The escutcheon trim measures 10-9/16 x 2-3/8 x 9/32 inches in brass, so check that the trim footprint covers the old trim holes.
2) Do I have to specify handing when ordering the TownSteel MSS mortise lock?
Yes, handing is required. Order it LH (left hand), RH (right hand), LHR (left hand reverse) or RHR (right hand reverse). Stand outside the door: if the hinges are on your left it is left hand, and if the door swings toward you it is the reverse version. Getting this wrong on a mortise lock means the anti-friction latch faces the wrong way.
3) Is this TownSteel mortise lock keyed, and how does the privacy function actually lock?
It is non-keyed. The MSS privacy function locks from the inside with a brass thumb turn (Classic Visible style is standard) and has no cylinder, so there is no key and no keyway to specify. That makes it the right choice for restrooms, bedrooms, patient rooms and changing rooms, and the wrong choice anywhere you need keyed entry from the corridor side.
4) Is the TownSteel MSS mortise lock Grade 1 and heavy enough for a hospital or school restroom?
Grade 1, heavy duty, and rated for commercial use. The lock body uses a stainless steel split anti-friction latch, stainless guard bolt and stainless rocker-type stop works, with forged brass or cast zinc levers plated to the finish. That construction level is what institutional restroom and patient-room doors in high-traffic buildings call for.
5) What is a direct cross-brand equivalent to the TownSteel MSS privacy mortise lock?
The TownSteel MSS privacy mortise lock is a Grade 1 heavy duty mortise lock with Privacy/Bed/Bath function and a 2-3/4 inch backset. Two close cross-brand equivalents are the Cal-Royal NM8440, a heavy duty Grade 1 privacy mortise lockset with deadbolt for 1-3/4 inch doors, and the Hager 3840S, a Grade 1 privacy mortise lock with a 2-3/4 inch backset for 1-3/4 inch to 2 inch doors. All three are non-keyed privacy functions, so the choice usually comes down to trim style and finish rather than function.
6) The bathroom door does not need to lock at all - what mortise lock should I use instead of a privacy function?
If the opening only needs latching with no locking, a passage function is the correct choice instead of the TownSteel MSS privacy lock, which is built for Privacy/Bed/Bath use with a thumb turn. Passage alternatives include the Falcon MA101, a Grade 1 heavy duty mortise passage lock with field reversible operation; the Hager 3810E, a Grade 1 passage mortise lock with escutcheon and 2-3/4 inch backset; and the Schlage PM010, a Grade 1 non-keyed passage latch mortise lock for 1-3/4 inch doors.
7) What looks like a privacy mortise lock but will not actually secure a restroom door?
Dummy and trim-only items are the common mix-up. The Schlage L0170 is a Grade 1 mortise non-keyed half dummy trim, the Emtek 3102 Memphis and 3104 Hamilton are dummy mortise entrance locksets, and the Falcon MESC600DT is a dummy escutcheon lever trim for M9900 exit devices. None of those latch or lock. The Sargent 130KB and 130W are mortise thumbturns only, not a lock body. The TownSteel MSS supplies the complete privacy function with a 3/4 inch projection stainless steel latch bolt and guard bolt.
8) For a dormitory or corridor door, is the TownSteel MSS privacy lock the right function?
No. The MSS is a Privacy/Bed/Bath function, intended for a room that locks from the inside with a thumb turn. For corridor and dorm room entries, the Sargent 7925 is a Grade 1 heavy duty dormitory exit function mortise lock with rose trim and a single cylinder deadbolt, and the Baldwin 6301LS is an entrance/apartment lever by lever mortise lock body with a 2-1/2 inch backset for doors 1-3/4 inch and over. Watch the backset difference if the door is already prepped at 2-3/4 inch.
9) What is the difference between the MSE low and regular escutcheon options on this TownSteel privacy lock?
Two escutcheon heights are offered, MSE Low and MSE Regular. The regular plate is the full sectional escutcheon dimension of 10-9/16 x 2-3/8 x 9/32 inches in brass; the low version is the shorter plate for openings where a tall plate will not sit cleanly, such as a narrow rail or where a closer arm or vision light limits space. Pick whichever matches the other doors in the building so the trim reads consistently.
10) Can I match this TownSteel privacy lock to the finishes and levers already on my other doors?
Seven finishes are offered: 605 bright brass, 606 satin brass, 622 matte black, 625 bright chrome, 626 satin chrome, 629 bright stainless steel and 630 satin stainless steel. Levers come in eight styles, Artistic, Congr, Gala, Imperial, Quest, Regal, Sentinel and Tango. Levers are forged brass or cast zinc plated to match the finish symbol, so a restroom privacy lock will match keyed openings carrying the same finish code.
11) What is a comparable Grade 1 privacy mortise lock if the TownSteel MSS is not the right fit?
Two close alternatives we carry: the Cal-Royal NM8440, a Grade 1 heavy duty privacy mortise lockset with a deadbolt for 1-3/4 inch doors, and the Hager 3840S, a Grade 1 privacy mortise lock with a 2-3/4 inch backset listed for 1-3/4 to 2 inch doors. The Cal-Royal adds a privacy deadbolt rather than a thumb-turned latch; the Hager covers thicker doors up to 2 inches.
12) I need this restroom door to just push and pull with no privacy latch. Is there a better option than the privacy MSS?
For a door that should never lock, use a passage function instead of privacy. The Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock for 1-3/4 inch doors, and the Falcon MA101 is a Grade 1 heavy duty mortise passage lock that is field reversible. For ligature-resistant hospital use with no lever at all, the Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset.
13) Can this TownSteel MSS privacy lock be tied into an access control system?
Not this one. The MSS privacy version is a mechanical, non-electronic, non-keyed lock. If you need the opening monitored or controlled, look at a powered mortise lock instead: the Schlage CO-100-MS standalone electronic mortise lock is a Grade 1 privacy-function keypad lock for 1-3/4 inch doors, and the BEST 45HW wired electromechanical mortise lock runs on 12V or 24V.
14) Is the Schlage CO-100 privacy mortise lock a substitute for the TownSteel MSS privacy lock?
They serve the same Privacy/Bed/Bath function at Grade 1, but they are not interchangeable in the way a buyer usually means. The TownSteel MSS is a mechanical, non-electronic lock operated by a brass thumb turn. The Schlage CO-100-MS-40-KP is a standalone electronic mortise lock with a keypad reader for 1-3/4 inch doors, so it brings credential management and a power source into the opening. Choose the MSS where a mechanical thumb turn is all the room requires.
15) Is there a cylindrical alternative if the door is not prepped for a mortise pocket?
The TownSteel MSS is a mortise lock and needs a mortise pocket with a 1-1/4 by 8 inch faceplate prep. If the door is bored rather than mortised, the Schlage PC10 is a Grade 1 non-keyed passage cylindrical lock with rose for 1-3/4 inch doors. Note that it is a passage function, so it does not provide the thumb turn privacy locking the MSS gives.
16) Can I order just the mortise lock body without trim, the way I would from BEST?
The TownSteel MSS ships as a sectional trim lockset with the escutcheon in low or regular height, the lever style, and the finish all selected together. If you need a bare lock body to marry to existing trim, BEST 45H series lock bodies are sold that way, such as the 45HCAC heavy duty public entrance lockbody with field reversible operation and the 45HCAINL heavy duty lockbody with intruder function. Those are different functions from privacy.
17) If a room needs a classroom security indicator instead of privacy, what mortise lock covers that?
The TownSteel MSS offers a Classic Visible thumb turn for privacy indication on the room side. Where a school needs a classroom security function with a visual indicator, the Marks USA LA318GJ is a Grade 1 classroom security indicator mortise lockset for 1-3/4 inch doors with an ANSI strike and an 8-1/2 by 2-3/4 by 7/16 inch steel escutcheon. The MSS also uses an ANSI strike in plated or stainless steel.
18) Is there a push/pull alternative to a lever privacy mortise lock for a behavioral health restroom?
The TownSteel MSS uses forged brass or cast zinc levers in eight styles including Artistic, Imperial, Sentinel and Tango. Where a lever is not acceptable, the Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant and ADA compliant in satin stainless steel. It is a passage function, so it does not lock.
19) We want privacy control tied into access control - what mortise options do that instead?
The TownSteel MSS is a mechanical privacy lock, though the MS platform is documented as ready for access control integration with optional status sensors including REX, PRIV, DAJ and MKO. If the lock itself must be electronic, the Alarm Lock DL4500 is a Grade 1 electronic mortise deadbolt with 2,000 user codes and a privacy keypad for 1-5/8 to 1-7/8 inch doors, and the Schlage LE series LEBMB-ADD is a mobile enabled mortise lock with push button and LED covering privacy, office and apartment modes at Grade 2 with a 3 hour fire rating.
20) What is the difference between the TownSteel MSS privacy lock and a mortise deadbolt like the Sargent 4874?
The TownSteel MSS privacy lock includes a latch bolt with 3/4 inch projection plus a guard bolt and lever trim, so it both latches the door and locks it with a thumb turn. The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset and the Kaba Ilco 185 series is a no-handing mortise deadbolt; those bolt the door but provide no latch or lever operation, so they are typically added alongside a latching lock rather than used in place of one.
21) Does the TownSteel MSS need handing specified, or is there a field reversible alternative?
The TownSteel MSS is ordered by hand - left hand, right hand, left hand reverse or right hand reverse. If you would rather stock one lock for either swing, the Falcon MA101 Grade 1 heavy duty mortise passage lock and the BEST 45HCAC heavy duty mortise lock body are both field reversible, though neither is a privacy function.
22) Is sectional trim or escutcheon trim better for the TownSteel MSS mortise lock?
The MSS uses sectional trim, meaning the lever and thumb turn mount on their own plates rather than one long unified plate. Sectional trim is easier on doors with limited rail space and simpler to service, since you can pull one section without disturbing the other. If you want a single continuous plate covering old trim scars, choose a full escutcheon design instead, such as the Hager 3810E passage mortise lock with escutcheon.
23) Is there a template available for prepping the door for the TownSteel MSS mortise lock?
Yes, TownSteel publishes an MSS template for the mortise pocket and trim hole locations, linked from the product information. Work from it before cutting: the pocket has to suit a 2-3/4 inch backset with a 1-1/4 x 8 inch faceplate, and the trim holes must line up with the sectional escutcheon.
How fast can I get the TownSteel MSS-R-T-22-626 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 TownSteel MSS-R-T-22-626 come with a warranty?
Absolutely. The TownSteel MSS-R-T-22-626 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 TownSteel MSS-R-T-22-626?
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
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