TownSteel MSS Series ANSI Grad...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$502.00
$498.42
TownSteel TownSteel MSS Series Privacy/Bathroom Function - Heavy Duty Sectional Mortise Lock, Non-Keyed TWS-MSS-02

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

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Model: MSS-R-T-02-626
$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 ANSI Grade 1 Heavy Duty Sectional Mortise Lock - Privacy/Bathroom Function, Non-Keyed — 2-Year Warranty

The TownSteel MSS Series Mortise Lock is an ANSI Grade 1 heavy duty sectional mortise lock engineered for privacy and bathroom door applications where non-keyed, stand-alone security is required. Featuring a 2-3/4" backset, a 3/4" projection stainless steel split anti-friction latch bolt, and a durable stainless steel and forged brass construction, this lock is built for demanding commercial environments. The sectional trim design supports single-opening, stand-alone use and can also be readily integrated into sophisticated access control systems.

Key Features

  • Precision Dimensions: 2-3/4" backset, a 1-1/4" x 8" stainless steel faceplate, and a 10-9/16" x 2-3/8" x 9/32" brass escutcheon for accurate door preparation and consistent fit.
  • ANSI Grade 1 Heavy Duty Rating: Built to ANSI Grade 1 standards for superior strength and reliability in high-traffic commercial facilities.
  • Stainless Steel Latch Assembly: 3/4" projection, split, anti-friction stainless steel latch bolt paired with a stainless steel guard bolt for smooth, secure, low-friction operation.
  • ANSI Strike Plate: Plated/stainless steel ANSI strike offers long-lasting corrosion resistance and reliable latching alignment.
  • Forged Lever Hardware: Forged brass/cast zinc levers plated to match finish, paired with a brass Classic Visible thumb turn for consistent operation and appearance.
  • Stainless Steel Rocker Stop Works: Stainless steel, rocker-type stop works deliver dependable lock function over repeated use.
  • Sectional Trim, Stand-Alone Ready: Designed for single opening, stand-alone applications and can be readily integrated into sophisticated access control systems.
  • Optional Status Sensors: Available with REX (request-to-exit), PRIV (privacy), DAJ (door ajar), and MKO (mechanical key override) status sensors for enhanced monitoring capability.

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 Restrooms
  • Educational Facility Restrooms
  • Healthcare Institution Patient Rooms
  • Retail Establishment Restrooms
  • Multi-Tenant Residential Properties
  • Hospitality and Hotel Guest Rooms
  • Government and Municipal Buildings

Why TownSteel MSS?

TownSteel MSS Series mortise locks deliver ANSI Grade 1 heavy duty performance backed by stainless steel and forged brass components engineered for the demands of commercial privacy and bathroom applications. With a sectional trim design ready for stand-alone use or integration into advanced access control systems, the MSS Series provides dependable, professional-grade performance for facilities that require consistent, secure door operation day after day.

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-02-626 – Frequently Asked Questions

1) What backset does the TownSteel MSS Series mortise lock use, and will it fit an existing mortise pocket?
The MSS Series privacy mortise lock is a 2-3/4 inch backset lock with a 1-1/4 x 8 inch stainless steel faceplate, which is the standard commercial mortise prep. If the door already has a mortise pocket cut for a 2-3/4 inch backset lock with an 8 inch face, the body drops into it. Doors prepped at 2-3/8 inch backset (typical of bored cylindrical locks) will not take it.
2) Is the TownSteel MSS privacy mortise lock keyed, and how does the bathroom function work?
It's non-keyed. The MSS privacy/bed/bath version locks from the inside with a brass thumb turn (Classic Visible style is standard) and takes no cylinder, so it suits restrooms, bedrooms and patient rooms where you want occupancy privacy without key control. If you need a keyed opening, you need a different function in the series, not this one.
3) Do I have to specify handing when ordering this TownSteel mortise lock?
Yes, handing is required. The MSS privacy lock is ordered as LH (left hand), RH (right hand), LHR (left hand reverse) or RHR (right hand reverse). Stand outside the door: hinges on your left with the door pulling toward you is LH, pushing away is LHR. Get this wrong and the lever and latch bevel face the wrong way.
4) Will the TownSteel MSS lock latch into the strike that's already in my frame?
The latch bolt projects 3/4 inch and the lock ships with an ANSI strike in plated or stainless steel. A frame already cut for an ANSI 4-7/8 inch strike takes the supplied strike directly. If your frame has a small T-strike or a non-ANSI cutout, plan on frame work or a filler plate.
5) What are the alternatives to the TownSteel MSS privacy mortise lock from other brands?
Two close mechanical equivalents we carry: the Cal-Royal NM8440, a Grade 1 privacy/bed/bath 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 rated for 1-3/4 to 2 inch doors. The Hager matches the MSS on backset, so it swaps into the same mortise prep. If you need privacy plus electronic access control instead of a thumb turn, the Schlage CO-100-MS-40-KP is a Grade 1 heavy duty standalone keypad mortise lock in privacy function.
6) What is a direct cross for a TownSteel MSS privacy mortise lock from another manufacturer?
The TownSteel MSS Series privacy/bathroom mortise lock is a Grade 1 non-keyed mortise lock with a 2-3/4 inch backset. Two peers cover the same function: the Cal-Royal NM8440 is a Grade 1 privacy mortise lockset with deadbolt for 1-3/4 inch doors, and the Hager 3840S is a Grade 1 privacy mortise lock with a 2-3/4 inch backset for doors 1-3/4 inch to 2 inch. The Hager matches the MSS on backset, while the Cal-Royal adds a deadbolt to the privacy function.
7) Can I use the TownSteel MSS on a classroom or office door?
No. The MSS Series shown here is the privacy/bathroom function and is non-keyed, so it will not key to a master system. For a classroom door, the Corbin Russwin ML2003 is a Grade 1 mortise classroom lockset for 1-3/4 inch doors and the Cal-Royal NM8070 is a Grade 1 classroom mortise lockset with auxiliary deadlatch. For an office or entrance door, the Cal-Royal NM8050 is a Grade 1 office/entrance mortise lockset and the Hager 3850E is a Grade 1 office mortise lock with lever and escutcheon.
8) For a behavioral health or hospital bathroom, is the TownSteel MSS the right choice or is there a better option?
The TownSteel MSS is a Grade 1 heavy duty privacy mortise lock with lever trim, which suits standard commercial bed and bath openings. Where ligature resistance is required, 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.
9) Which levers and finishes can I get on the TownSteel MSS privacy mortise lock?
Eight lever styles: Artistic, Congr, Gala, Imperial, Quest, Regal, Sentinel and Tango. Seven finishes: 605 bright brass, 606 satin brass, 622 matte black, 625 bright chrome, 626 satin chrome, 629 bright stainless and 630 satin stainless. Levers are forged brass or cast zinc plated to match the finish symbol, so a 626 privacy lock will match 626 keyed openings on the same floor.
10) Is this mortise lock heavy duty enough for a high traffic commercial restroom?
It's an ANSI Grade 1 heavy duty commercial mortise lock, the top durability class, with a stainless steel split anti-friction latch bolt, stainless guard bolt and a stainless rocker-type stop works. That is the right spec for a public restroom, school or hospital door seeing constant use, rather than a residential-grade privacy set.
11) Can this TownSteel MSS lock be tied into an access control system?
Not as ordered. The MSS privacy lock is a mechanical, non-electronic lock. TownSteel's MS motorized mortise body is the one built for stand-alone or integrated access control, with optional status sensors including REX (request to exit), PRIV (privacy), DAJ (door ajar) and MKO (mechanical key override). For an electrified opening from another brand we carry, the BEST 45HW wired electromechanical mortise lock runs on 12V or 24V.
12) I need a mortise lock for a bathroom but do not need the privacy function - what should I use instead?
For a door that only needs latching with no locking, use a passage mortise lock rather than the TownSteel MSS privacy function. The Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock for 1-3/4 inch doors, the Falcon MA101 is a Grade 1 heavy-duty mortise passage lock with field reversible operation and a fire rating, and the Hager 3810S is a Grade 1 passage mortise lock with rose trim and a 2-3/4 inch backset.
13) What is the difference between the TownSteel MSS and a storeroom mortise lock?
The MSS Series privacy/bathroom lock is non-keyed and operates from a thumb turn inside, so it suits bed and bath openings. A storeroom lock is keyed and holds the outside lever locked at all times: the Accentra 8805FL is a Grade 1 storeroom mortise lock with an Arcadia lever from 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.
14) Is there an electronic privacy mortise lock I could use in place of the mechanical TownSteel MSS?
The TownSteel MSS Series is a mechanical, non-electronic mortise lock. If you want credential control on the same opening, the Schlage CO-100-MS-40-KP is a Grade 1 heavy duty standalone electronic mortise lock in privacy function with a keypad reader for 1-3/4 inch doors, and the Schlage Electronics LEBMB-ADD is a Grade 2 mobile-enabled mortise lock with push button and LED covering privacy, office and apartment modes with a 3 hour fire rating.
15) Is the Schlage L0170 a substitute for the TownSteel MSS privacy mortise lock?
No. The L0170 is Grade 1 heavy duty half dummy trim in dummy function - it has no latch and no privacy mechanism, so it is used on an inactive leaf. The TownSteel MSS is a working privacy/bathroom mortise lock with a 3/4 inch stainless steel anti-friction latch bolt, guard bolt and thumb turn. The Emtek 3102 Memphis and 3104 Hamilton mortise entrance locksets are likewise dummy function.
16) My door is prepped for a mortise lock but I need a deadbolt only - what takes the place of the TownSteel MSS?
The MSS Series is a latching privacy lockset with lever trim, not a deadbolt. For deadbolt-only mortise prep, the Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset, matching the 2-3/4 inch backset of the MSS, and the Kaba Ilco 185 Series is a no-handing mortise deadbolt.
17) How does the TownSteel MSS compare to a cylindrical lock for the same door?
The MSS Series is a mortise lock, which requires a mortise pocket in the door edge and uses a 1-1/4 by 8 inch stainless steel faceplate with an ANSI strike. A cylindrical lock uses bored prep instead: the Schlage PC10 is a Grade 1 non-keyed passage cylindrical lock with rose for 1-3/4 inch doors. The two preps are not interchangeable without modifying the door.
18) Which mortise lock should I use for a dormitory or corridor door instead of the TownSteel MSS?
The MSS Series is privacy function, intended for bed and bath. For dorm and corridor openings, the Sargent 7925 is a Grade 1 heavy duty dormitory exit function mortise lock with rose trim and a single cylinder deadbolt from the 7900 Series. The BEST 45HCAC is a heavy duty mortise lock body in public entrance function with field reversible operation.
19) Does the TownSteel MSS come with escutcheon trim, or do I need a rose-trim lock to match my other doors?
The TownSteel MSS uses a 10-9/16 by 2-3/8 by 9/32 inch brass escutcheon and is offered in low and regular escutcheon builds with eight lever styles including Artistic, Imperial, Regal and Tango. If the rest of the openings are trimmed with roses, the Hager 3810S is a Grade 1 passage mortise lock with rose and a 2-3/4 inch backset, while the Hager 3810E is the escutcheon version of the same passage lock.
20) Is there a template for cutting the door for the TownSteel MSS mortise lock?
Yes. TownSteel publishes an MSS template PDF covering the lock body pocket, trim holes and faceplate cutout. Work from it before cutting: the body is a 2-3/4 inch backset with a 1-1/4 x 8 inch faceplate, and the sectional escutcheon trim is 10-9/16 x 2-3/8 x 9/32 inches, so the trim bolt pattern has to line up with the pocket.
21) I only need to replace the thumb turn on a mortise lock, not the whole lockset - what do I order?
The TownSteel MSS Series ships as a complete privacy mortise lockset with a brass Classic Visible thumb turn as standard. If the lock body is sound and only the turn piece is being replaced, the Sargent 130KB is a standard duty mortise thumbturn from the 8200 Series and the Sargent 130W is a mortise thumbturn with a round backplate from the 7800 Series.
How fast can I get the TownSteel MSS-R-T-02-626 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-02-626 come with a warranty?
Absolutely. The TownSteel MSS-R-T-02-626 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-02-626?
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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