TownSteel MSS Series Double Cy...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$615.00
$610.62
TownSteel TownSteel MSS Series Institutional Function - Heavy Duty Sectional Mortise Lock , Double Cylinder TAWS-MSS-30

TownSteel MSS Series Double Cylinder Heavy Duty Mortise Lock for Institutional Applications

(No reviews yet) Write a Review

Model: MSS-R-T-30-626
$615.00
$610.62
Selected Finish is
Selected Lever Types is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$615.00
$610.62
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

TownSteel MSS Series Double Cylinder Heavy Duty Mortise Lock for Institutional Applications

The TownSteel MSS Series is an ANSI Grade 1 heavy duty mortise lock engineered for institutional, asylum, and utility applications requiring maximum security and durability. This double cylinder configuration features sectional trim, a 2-3/4" backset, and a 3/4" projection stainless steel split anti-friction latch bolt, making it suitable for single opening stand-alone installations or integration into sophisticated access control systems. Built with stainless steel and forged brass components throughout, the MSS Series delivers dependable performance backed by a 2-year manufacturer's warranty.

Key Features

  • Backset Dimension: 2-3/4" backset with sectional trim design suited for institutional door preparations.
  • Faceplate & Escutcheon: 1-1/4" x 8" stainless steel faceplate paired with a 10-9/16" x 2-3/8" x 9/32" brass escutcheon for a clean, durable appearance.
  • Heavy-Duty Latch Bolt: 3/4" projection, stainless steel, split, anti-friction latch bolt ensures smooth, reliable latching.
  • Stainless Steel Guard Bolt: Reinforced guard bolt helps resist tampering and unauthorized entry attempts.
  • Forged Lever Construction: Forged brass/cast zinc levers plated to match finish symbols for long-term durability.
  • Classic Visible Thumb Turn: Brass thumb turn provides straightforward manual operation from the interior.
  • Stainless Steel Stop Works: Rocker-type stop works deliver consistent mechanical actuation over time.
  • Access Control Ready: Optional status sensors including REX (request-to-exit), PRIV (privacy), DAJ (door ajar), and MKO (mechanical key override) allow integration into sophisticated access control systems.
  • Double Cylinder Keyed Function: Keyed cylinders on both sides support institutional security requirements where key control is critical.

Certifications & Compliance

  • ANSI Grade 1 Heavy Duty rated mortise lock
  • ANSI strike, plated/stainless steel construction
  • 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: Double Cylinder
  • Commercial/Residential: Commercial
  • Keyed: Yes
  • Lock Function: Double Cylinder
  • Product Attribute: Mortise Locks
  • Electronic: No
  • Product Function: Asylum/Institution/Utility
  • Product Category: Mechanical Locks
  • Department: Door Hardware

Typical Applications

  • Correctional and Detention Facilities
  • Healthcare Institutions
  • Educational Facilities
  • Government and Municipal Buildings
  • Industrial and Warehouse Facilities
  • Commercial Office Buildings
  • Multi-Tenant Institutional Properties

Why TownSteel MSS?

TownSteel MSS Series mortise locks combine ANSI Grade 1 heavy duty construction with stainless steel latch, guard bolt, and stop works components to withstand the demands of institutional and high-security environments. The double cylinder configuration, sectional trim design, and readiness for access control sensor integration make this lock a dependable choice for facilities where security and durability are non-negotiable.

Product Specs

Series:
MSE Series
Product Group:
Mechanical Locks
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Subcategory:
Mortise Locks
Keyed Function:
Double Cylinder
Commercial/Residential:
Commercial
Lock Type:
Mortise
Keyed:
Yes
Lock Function:
Double Cylinder
Grade:
Grade 1
Duty Level:
Heavy Duty
Product Attribute:
Mortise Locks
Electronic:
No
Product Function:
Asylum/Institution/Utility
Product Category:
Mechanical Locks
Department:
Door Hardware

TownSteel MSS-R-T-30-626 – Frequently Asked Questions

1) Will the MSS latch engage my existing strike in the frame?
The latch bolt throws 3/4 inch and is a split, anti-friction stainless bolt, with a separate stainless guard bolt that deadlocks it when the door closes. A frame already cut for a standard ANSI mortise strike will accept it. If your current strike is a short-lip or non-ANSI cutout, plan on swapping to the ANSI strike supplied with the lock.
2) What does double cylinder mean on this institutional mortise lock, and is it right for a patient room or utility door?
Double cylinder means a key cylinder on both sides: the lever is locked from either face and a key is required to retract it from inside as well as outside. TownSteel catalogues this MSS configuration under an asylum/institution/utility function, which is what behavioral health, secure utility and mechanical rooms use when free egress by lever is not wanted. On any opening that requires free egress under your local code, a double cylinder lock is the wrong choice - specify a storeroom or classroom function instead.
3) Do I have to specify handing when I order the TownSteel MSS mortise lock?
Yes, handing is a required selection: LH, RH, LHR or RHR. Stand outside the opening, the side the door is hinged on gives you left or right, and reverse means the door swings toward you. Get it wrong on a double cylinder institutional lock and the lever and cylinder orientation will be backwards on the finished opening.
4) Can I key several TownSteel MSS locks alike across a building?
Keying is chosen at order: keyed different is standard, keyed alike is available for running multiple locks on one key, and a specific key code can be entered for matching an existing system. If you run SFIC across the facility, order the SFIC prep version, which comes less core so your locksmith installs your own cores and keeps the doors on the existing master system.
5) What is a comparable Grade 1 mortise lock if the opening needs a storeroom function instead of double cylinder?
The TownSteel MSS is a Grade 1 heavy duty mortise lock built in a double cylinder institutional function, keyed on both sides. When the opening calls for storeroom instead - outside lever always locked, key retracts the latch, inside lever always free - 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 with an interchangeable core option. Both change the function rather than the grade.
6) For a behavioral health or patient room door, is the MSS the right pick or is there a ligature resistant alternative?
The TownSteel MSS is built for asylum, institution and utility applications as a Grade 1 heavy duty mortise lock with lever trim in eight lever styles. Where the opening requires no projecting lever at all, the Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset described as ligature resistant and ADA compliant in satin stainless steel. That is a passage paddle with no key control, so it does not replace the MSS double cylinder keying - it addresses the trim profile.
7) Is there another double cylinder mortise option, and how does it differ from the TownSteel MSS?
Two other double cylinder mortise parts sit alongside it. The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset - deadbolt only, no lever handle or latch. The Marks USA 21AC is an entrance double cylinder Unilock ornamental iron mortise lock with a round knob for 1 inch doors, which is a narrow ornamental iron application. The TownSteel MSS is a Grade 1 heavy duty sectional lock with lever trim and a 2-3/4 inch backset latch, so it covers both latching and key control from one body.
8) What should I use if the door needs classroom function rather than keyed both sides?
For classroom function, the Corbin Russwin ML2003 is a Grade 1 mortise classroom lockset in the ML2000 Series for 1-3/4 inch doors, and the Cal-Royal NM8070 is a Grade 1 classroom mortise lockset with an auxiliary deadlatch for 1-3/4 inch doors. The Marks USA LA318GJ is a Grade 1 classroom security indicator mortise lockset with an ANSI strike if the room needs a visible locked indication. The TownSteel MSS keeps cylinders on both sides instead, which suits utility and institutional openings controlled from either face.
9) Which mortise lock should I specify if the opening has to run on an access control system with credentials?
The TownSteel MSS is a mechanical, non-electronic lock that the manufacturer describes as ready for access control integration with optional status sensors including REX, privacy, door ajar and mechanical key override. If the opening needs its own reader, the Schlage LEMD-GRW is a Grade 1 ENGAGE Series wireless mortise lock with a 125 kHz proximity reader, the Dormakaba E-Plex E5086 is a Grade 1 pushbutton and card mortise lock, and the BEST 45HW is a heavy duty wired electromechanical mortise lock running 12V or 24V.
10) Does the SFIC version of the MSS lock include the cores?
No. The SFIC prep option is supplied less core, so you need to furnish small format interchangeable cores and the matching keys separately. If you do not run an interchangeable core system, order the standard cylinder version instead.
11) How big is the escutcheon plate on the MSS sectional trim, and will it cover the scars from my old trim?
The MSS escutcheon measures 10-9/16 x 2-3/8 x 9/32 inches and is brass, plated to match the finish you pick. Two escutcheon styles are offered, MSE Low and MSE Regular. At 2-3/8 inches across it is a narrow sectional plate, so it will not hide wide rose or wide-escutcheon scars from a previous lock. Compare the old trim footprint against those numbers before you commit.
12) Is the TownSteel MSS a Grade 1 lock and is it heavy enough for a high traffic institutional corridor?
ANSI Grade 1, heavy duty, and built for commercial service. The working parts are stainless where it counts: split anti-friction latch bolt, guard bolt, ANSI strike and rocker-type stop works. Levers are forged brass or cast zinc, plated to the finish symbol you order.
13) Is this TownSteel MSS an electronic or access control lock?
No, the MSS as sold here is a mechanical keyed mortise lock, not electrified. If you need a motorized or credential-read mortise lock on the same opening, Command Access ML190 Series is a motorized mortise lock with field selectable EL/EU operation on 24VDC, and Schlage's CO-100 standalone mortise lock reads a keypad. For wired electromechanical, BEST 45HW runs 12V or 24V.
14) What is a simpler mortise lock for an interior door that does not need to be keyed?
Non-keyed mortise bodies cover those openings. The Schlage PM010 is a Grade 1 passage latch mortise lock for 1-3/4 inch doors, the Hager 3810E is a passage mortise lock with escutcheon and a 2-3/4 inch backset, and the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation and a fire rating. The Hager 3840S is a Grade 1 privacy mortise lock on a 2-3/4 inch backset for bed and bath. The TownSteel MSS is keyed with a cylinder on each side, so it belongs on doors that need key control from both faces.
15) Do I need to order handing with the MSS the way I would with a field reversible lock?
Yes. The TownSteel MSS is ordered by hand - LH, RH, LHR or RHR - so the hand of the opening has to be confirmed before the order goes in. Some peers avoid that step: the BEST 45H heavy duty mortise lock body is field reversible, the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation, and the Kaba Ilco 185 Series mortise locks are supplied with no handing.
16) I only need the lock body, not the trim - is the MSS what I want?
No. The TownSteel MSS ships as a complete sectional mortise lock with escutcheon trim, choice of eight lever styles and seven finishes. If you are replacing only the chassis behind existing trim, the BEST 45H is a heavy duty mortise lock body in a public entrance function and the BEST 45HCA is a heavy duty mortise lockbody with intruder function. Lockbody-only parts leave the existing levers and escutcheons in place.
17) Will a Schlage PC10 work in place of the TownSteel MSS?
No. The Schlage PC10 is a Grade 1 passage cylindrical lock with a rose, which preps the door with a bored hole rather than a mortise pocket. The TownSteel MSS is a mortise lock with a 1-1/4 inch by 8 inch stainless faceplate and an ANSI strike, so it requires a mortised edge. Cylindrical and mortise preps are not interchangeable without changing the door prep.
18) How does the MSS compare with the Emtek and Baldwin mortise locksets for a residential-style entrance?
They serve different buildings. The Baldwin 6301 is an entry/apartment mortise lock body on a 2-1/2 inch backset for doors 1-3/4 inch and over, and the Emtek 3102 Memphis is a dummy mortise entrance lockset with no working latch. The TownSteel MSS is a commercial Grade 1 heavy duty sectional mortise lock on a 2-3/4 inch backset with a 3/4 inch stainless anti-friction latch and stainless rocker-type stop works, which is the pattern for institutional traffic.
19) If I want small format interchangeable core keying, does the MSS support it or should I look at another lock?
The TownSteel MSS is offered with an SFIC prep less core as well as a standard cylinder, so it can be keyed into an existing SFIC system with your own cores. Among the peers, the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset with an interchangeable core option if the opening needs storeroom function instead of double cylinder.
20) For a dormitory corridor door, is the MSS the right function or is there a better match?
For dorm corridors the Sargent 7925 is a Grade 1 heavy duty dormitory exit function mortise lock with rose trim and a single cylinder deadbolt in the 7900 Series. The TownSteel MSS is a Grade 1 heavy duty double cylinder institutional function with sectional escutcheon trim, available in low and regular escutcheon heights, so it is the choice when both faces need key control rather than a single cylinder deadbolt with free egress.
21) Is a keypad mortise lock an alternative to the MSS double cylinder for a utility room?
It can be, if you want codes instead of keys on both sides. The Alarm Lock DL3500CR is a Grade 1 Trilogy electronic mortise lock with 300 user codes and classroom function for doors 1-5/8 to 1-7/8 inch, and the BEST 45HZ EZ Series is an electronic keypad mortise lock with key override. The TownSteel MSS is mechanical with a cylinder on each face and ships keyed different, keyed alike, or to a supplied key code.
22) What finishes and lever styles can I get on the TownSteel MSS mortise lockset?
Seven finishes: 605 bright brass, 606 satin brass, 622 matte black, 625 bright chrome, 626 satin chrome, 629 bright stainless and 630 satin stainless. Eight lever designs: Artistic, Congr, Gala, Imperial, Quest, Regal, Sentinel and Tango. For matching existing corridor hardware in a school or hospital, 626 satin chrome and 630 satin stainless are the two that typically line up with what is already on the doors.
23) What thumb turn comes on the MSS mortise lock?
A brass thumb turn in the Classic Visible style is standard on the MSS. It is plated to match the finish symbol you order alongside the lever and escutcheon. If you need a standalone replacement thumbturn for a different mortise body, Sargent 130KB and 130W are separate mortise thumbturns, the 130W with a round backplate.
How fast can I get the TownSteel MSS-R-T-30-626 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-30-626 come with a warranty?
Absolutely. The TownSteel MSS-R-T-30-626 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-30-626?
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 TownSteel MSS-R-T-30-626 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.
!