TownSteel MSE Series Grade 1 M...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$715.00
$710.62
TownSteel TownSteel MSE Series Intruder Deadbolt Function - Heavy Duty Standard Escutcheon Mortise Lock, Double Cylinder TWS-MSE-33

TownSteel MSE Series Grade 1 Mortise Lock with Double Cylinder Deadbolt Function and Escutcheon Trim

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Model: MSE-R-T-33-626
$715.00
$710.62
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$715.00
$710.62
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TownSteel MSE Series Grade 1 Mortise Lock with Double Cylinder Deadbolt Function and Escutcheon Trim

The TownSteel MSE Series Grade 1 Mortise Lock delivers heavy-duty security for commercial openings, featuring a double cylinder deadbolt function and standard escutcheon trim. Engineered for single opening, stand-alone applications or integration into sophisticated access control systems, this mortise lock includes a 2-3/4" backset, a 3/4" projection stainless steel split anti-friction latch bolt, and a 10-9/16" x 2-3/8" x 9/32" brass escutcheon. Built to ANSI Grade 1 standards, the MSE Series combines forged brass/cast zinc lever construction with stainless steel components for long-term reliability in demanding environments.

Key Features

  • Backset: 2-3/4" backset provides standard mortise lock door preparation compatibility.
  • Latch Bolt: 3/4" projection, stainless steel, split, anti-friction latch bolt design for smooth, dependable operation.
  • Faceplate: 1-1/4" x 8" stainless steel faceplate for corrosion-resistant durability.
  • Escutcheon Trim: 10-9/16" x 2-3/8" x 9/32" brass escutcheon offers heavy-duty trim coverage.
  • Lever Parameters: Forged brass/cast zinc levers, plated to match finish symbols for a consistent commercial appearance.
  • Thumb Turn: Brass thumb turn with Classic Visible standard indicator for quick status confirmation.
  • Guard Bolt: Stainless steel guard bolt adds resistance against latch manipulation.
  • Strike: ANSI strike, plated stainless steel, for secure and durable door frame engagement.
  • Access Control Ready: Optional status sensors including REX (request-to-exit), PRIV (privacy), DAJ (door ajar), and MKO (mechanical key override) support integration into access control systems.

Certifications & Compliance

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

Technical Specifications

  • 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: Intruder
  • Product Category: Mechanical Locks
  • Department: Door Hardware

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why TownSteel MSE?

TownSteel MSE Series mortise locks deliver professional-grade reliability with forged brass/cast zinc levers and stainless steel latch, guard bolt, and faceplate components built to ANSI Grade 1 standards. The double cylinder deadbolt function and escutcheon trim provide dependable, heavy-duty security for stand-alone or access-control-integrated commercial applications.

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:
Intruder
Product Category:
Mechanical Locks
Department:
Door Hardware

TownSteel MSE-R-T-33-626 – Frequently Asked Questions

1) What does the intruder function do on the TownSteel MSE mortise lock, and why is it double cylinder?
Intruder function means the deadbolt is the security element, and on this MSE configuration it is keyed on both sides. A key is required to throw or retract the bolt from either the inside or the outside, which is how buyers use it on doors where breaking adjacent glass must not give someone a way to turn a thumbturn and walk out. It is a Grade 1 heavy duty mortise lock, so it is built for commercial traffic rather than residential.
2) What backset and faceplate does the MSE mortise lock use, and will it drop into an existing mortise pocket?
The lock body uses a 2-3/4 inch backset with a 1-1/4 by 8 inch stainless steel faceplate, which is the standard commercial mortise pocket size, so it will normally go straight into a door already prepped for a heavy duty mortise lock of that size. What changes is the trim: the MSE escutcheon measures 10-9/16 x 2-3/8 x 9/32 inches in brass, so check that the existing lever and cylinder holes fall under that plate before you commit.
3) Will the MSE lock latch into the strike already in my frame?
The latch bolt throws 3/4 inch and is a split, anti-friction stainless steel bolt, and the lock ships with an ANSI strike in plated or stainless steel. If your frame already has a standard ANSI strike prep, the supplied strike drops into it. Frames cut for a non-ANSI or T-strike will need the prep changed or the frame filled.
4) Do I have to specify handing when ordering a TownSteel MSE mortise lock?
Yes, handing is a required selection: LH, RH, LHR or RHR. Stand outside the door (the key side); if the hinges are on your left it is left hand, and if the door swings toward you it is the reverse version. Order the wrong hand and the lever and anti-friction latch will not work correctly on the opening.
5) Can I key several MSE locks alike across a building, or use my own SFIC cores?
Both are handled at order time. Keying is a required choice of KD keyed different (standard), KA keyed alike for multiple locks, or a specific key code for special keying such as matching an existing masterkey system. On the cylinder side you pick either standard cylinders or an SFIC prep supplied less core, which is what a property manager or locksmith wants when the building is already running its own small format interchangeable core system.
6) I need a classroom function mortise lock instead of an intruder function - what should I order?
The TownSteel MSE intruder configuration is a double cylinder keyed function and will not give you classroom operation. For classroom, the Corbin Russwin ML2003 is a Grade 1 mortise classroom lockset for 1-3/4 inch doors, and the Cal-Royal NM8070 is a heavy duty Grade 1 classroom mortise lockset with an auxiliary deadlatch. Marks USA LA318GJ is a Grade 1 classroom security indicator mortise lockset for 1-3/4 inch doors if you want visual status at the door.
7) What is the closest equivalent to the TownSteel MSE intruder mortise lock from another manufacturer?
The closest match on function is the BEST 45HCAINL, a heavy duty mortise lockbody listed with an Intruder function in the 40H Series. It is the same lockset concept as the TownSteel MSE Series intruder deadbolt function, which is a heavy duty Grade 1 mortise lock. The practical difference is trim: the BEST part is specified as a lockbody, while the MSE is ordered complete with escutcheon trim in MSE - Low or MSE - Regular and a choice of eight lever styles including Artistic, Imperial, Quest and Tango.
8) Is a Sargent 4874 double cylinder deadbolt the same thing as the TownSteel MSE double cylinder intruder lock?
No. The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset - deadbolt only, no latch or lever trim. The TownSteel MSE intruder function is a complete Grade 1 mortise lockset with escutcheon trim and levers, ordered double cylinder. Use the 4874 when the opening already has separate latching hardware and you only need the bolt; use the MSE when one lock case has to do both.
9) Our access control system needs to control the mortise lock electrically - can the MSE do that or do I need a different lock?
The TownSteel MSE is a mechanical lock with escutcheon trim, offered with optional status sensors such as request-to-exit, privacy, door ajar and mechanical key override so it can be integrated into an access control system. If you need the lock itself to be electrically released, look at the BEST 45HW wired electromechanical mortise lock with 12V/24V operation, the Command Access ML190 motorized mortise lock with field selectable EL/EU operation on 24VDC, or the Schlage L9092EU with electric lock/unlock outside lever and request to exit at 12/24VDC.
10) Is the Baldwin 6301 or 6310 mortise lock body interchangeable with the TownSteel MSE?
No. The Baldwin 6301 entry/apartment and 6310 entry/storeroom mortise lock bodies use a 2-1/2 inch backset, while the TownSteel MSE is built on a 2-3/4 inch backset with a 1-1/4 by 8 inch stainless faceplate, so the door prep is not the same. The Baldwin bodies also come in knob-by-knob and lever-by-lever entry or storeroom functions rather than the double cylinder intruder function the MSE provides.
11) What lever styles and finishes does the TownSteel MSE escutcheon mortise lock come in?
Eight lever designs are offered: Artistic, Congr, Gala, Imperial, Quest, Regal, Sentinel and Tango, in forged brass or cast zinc plated to match the finish. Finishes run 605 bright brass, 606 satin brass, 622 matte black, 625 bright chrome, 626 satin chrome, 629 bright stainless and 630 satin stainless. The escutcheon itself comes in a low or a regular profile, which is the choice to make when you are matching the plate height already on your other doors.
12) Should I use a double cylinder intruder mortise lock or a separate mortise deadbolt?
The MSE intruder lock combines the lever latch and the keyed deadbolt in one mortise body and one escutcheon, so the door gets a single prep and a single piece of trim. If the door already has a working latch and you only need to add keyed deadbolting, a standalone unit like the Sargent 4874 double cylinder mortise deadbolt, also on a 2-3/4 inch backset, is the narrower fix. Going the other way, if life safety rules out a key on the inside, choose a lock with a thumbturn rather than a double cylinder.
13) Is the TownSteel MSE an electronic or access-control lock?
No. The MSE escutcheon mortise lock in the intruder double cylinder configuration is a mechanical, keyed lock with no electronics. If the opening needs credentials or audit trail, look at an electrified or standalone electronic mortise lock instead, such as the Schlage CO-100 keypad mortise lock or the BEST 45HW wired electromechanical mortise lock.
14) We want keypad access on the same door instead of a keyed intruder lock - what mortise options are there?
The TownSteel MSE is a non-electronic mechanical mortise lock. If you want credentials at the door, the BEST 45HZ EZ Series is an electronic keypad mortise lock with key override, the Alarm Lock DL3500CR is a Grade 1 electronic mortise lock with 300 user codes and classroom function, and the Dormakaba E-Plex 2066 is an electronic pushbutton keyless mortise lock. For wireless management, the Alarm Lock DL1300NW Trilogy Networx and the Schlage LEMD-GRW Grade 1 ENGAGE wireless mortise lock with 125kHz proximity reader both report back to a system.
15) What is a simpler mortise lock for an opening that does not need keying at all?
If the door only needs to latch, the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation and a fire rating, and the Schlage PM010 is a Grade 1 passage latch mortise lock for 1-3/4 inch doors. Hager 3810E is a Grade 1 passage mortise lock with escutcheon trim and a 2-3/4 inch backset, which is the same backset the TownSteel MSE uses, so the door prep carries over. The MSE itself is a keyed double cylinder lock.
16) For a restroom or bedroom door, is the MSE intruder lock the right choice or is there a better privacy option?
The TownSteel MSE intruder function is a keyed double cylinder lock and is not a privacy set. For privacy openings, the Cal-Royal NM8440 is a heavy duty Grade 1 privacy mortise lockset with a 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 to 2 inches thick.
17) What mortise lock should I use for a main entrance that needs to stay latched and locked from outside at all times?
That is storeroom function, not intruder. The Accentra 8805FL is a Grade 1 storeroom mortise lock in the 8800 Series with an Arcadia lever, and the Cal-Royal NM8080 is a heavy duty Grade 1 storeroom mortise lockset with an interchangeable core option. The TownSteel MSE covers the intruder application with a double cylinder deadbolt function, and it can also be ordered with SFIC Prep, Less Core if you are standardizing on small format interchangeable cores across the building.
18) Will a Sargent 130KB thumbturn or a Schlage L0170 dummy trim work as a replacement for the MSE lock?
No, neither is a substitute. The Sargent 130KB is a standard duty mortise thumbturn in the 8200 Series and the Sargent 130W is a mortise thumbturn with a round backplate - both are trim pieces, not locks. The Schlage L0170 is Grade 1 half dummy trim with no latching or locking action at all. The TownSteel MSE is a complete keyed mortise lockset with a double cylinder deadbolt function, escutcheon trim and lever.
19) Is there a double cylinder entrance mortise lock for a narrow ornamental iron door?
The TownSteel MSE uses a 2-3/4 inch backset with a 1-1/4 by 8 inch faceplate, which suits standard commercial doors rather than thin iron stiles. For ornamental iron, the Marks USA 21AC and 22AC are entrance double cylinder ornamental iron mortise locks with round knobs, both listed for 1 inch door thickness.
20) What is the difference between the TownSteel MSE escutcheon lock and a rose-trim mortise lock like the Sargent 7925 or Hager 3810S?
It is the trim footprint at the door face. The TownSteel MSE carries a one-piece escutcheon measuring 10-9/16 by 2-3/8 by 9/32 inches in brass, available in MSE - Low and MSE - Regular. The Sargent 7925 is a Grade 1 heavy duty dormitory exit function mortise lock with rose trim and a single cylinder deadbolt, and the Hager 3810S is a Grade 1 passage mortise lock with rose and a 2-3/4 inch backset. Rose trim exposes more of the door face; escutcheon covers a taller area, which matters when you are replacing an older lock that left marks.
21) For a behavioral health or hospital corridor, is the MSE lock appropriate or is there a ligature resistant alternative?
The TownSteel MSE uses lever trim in styles such as Regal, Sentinel and Gala, which project from the door. Where ligature resistance is the requirement, 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.
22) Is this mortise lock suitable for a commercial building or just residential doors?
It is a commercial lock: Grade 1, heavy duty, with a stainless steel anti-friction latch, stainless guard bolt and stainless rocker type stop works. That is the spec level institutional and MRO buyers standardize on for corridor and entry doors in schools, healthcare and multi-family. Light residential doors would be better served by a lighter grade set.
How fast can I get the TownSteel MSE-R-T-33-626 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 MSE-R-T-33-626 come with a warranty?
Absolutely. The TownSteel MSE-R-T-33-626 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 MSE-R-T-33-626?
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