Falcon MA531 Grade 1 Heavy-Dut...
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$824.00
$415.87
Falcon Falcon MA531 Apartment Corridor Lock - Grade 1 Keyed Mortise Lock with Deadbolt FAL-MA531

Falcon MA531 Grade 1 Heavy-Duty Mortise Lock with Deadbolt - Apartment Corridor Function

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Model: MA531P DG 626
$824.00
$415.87
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Falcon MA531 Grade 1 Heavy-Duty Mortise Lock with Deadbolt - Apartment Corridor Function

Professional-Grade Security for High-Traffic Commercial Applications

The Falcon MA531 delivers Grade 1 performance with heavy-duty construction designed for apartment corridor applications in commercial settings. This mortise lock features forged escutcheons for added strength, cold-formed steel components with zinc plating and dichromate coating for corrosion resistance, and UL listed 3-hour fire rating certification. The field-reversible design with 2-piece anti-friction stainless steel latch bolt provides reliable operation in high-traffic, high-abuse environments while meeting ANSI/BHMA 156.13 Series 1000 standards.

Professional Features & Benefits

  • Grade 1 Security Performance: UL listed and certified Operational Grade 1 and Security Grade for maximum protection in commercial applications.
  • Heavy-Duty Construction: Forged escutcheons and cold-formed steel components with zinc plating and dichromate coating provide exceptional durability and corrosion resistance.
  • Fire-Rated Certification: UL listed 3-hour A label fire rating ensures code compliance for fire door applications.
  • Field-Reversible Operation: Easy re-handing capability allows installation flexibility without additional hardware requirements.
  • Anti-Friction Latch Design: 2-piece stainless steel latch bolt provides smooth, reliable operation throughout the lock's service life.
  • Flexible Keying Options: Compatible with conventional cylinders or Small Format Interchangeable Core (SFIC) systems for easy re-keying in high-turnover environments.
  • ANSI Compliance: Meets ANSI/BHMA 156.13 Series 1000 standards and ANSI Standard A115.1 for frame preparation requirements.
  • Apartment Corridor Function: Specifically designed for multi-family residential and commercial corridor applications with appropriate access control features.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Door Hand Direction: Field Reversible
  • Duty Level: Heavy Duty
  • Electronic: No
  • Fire Rating: Yes
  • Grade: Grade 1
  • Keyed: Yes
  • Keyed Function: Single Cylinder
  • Lock Function: Apartment Corridor
  • Lock Type: Mortise
  • Product Attribute: Mortise Locks
  • Product Category: Mechanical Locks
  • Product Function: Corridor
  • Product Group: Mechanical Locks
  • Product Model: MA531
  • Product Subgroup: Mortise Locks and Trim
  • Product Type: Mortise Locks
  • Series: MA Series
  • Subcategory: Mortise Locks
  • Tags: falcon ms531, ma531
  • UL Listing Type: UL listed 3-hour fire door, A label

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and 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 device to door and frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Multi-Family Residential Properties
  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Industrial and Warehouse Facilities
  • Hotel and Hospitality Properties

Why Choose Falcon Quality?

Falcon MA531 mortise locks deliver professional-grade reliability with forged escutcheons and cold-formed steel construction designed for high-traffic, high-abuse environments. UL listed with 3-hour fire rating and Grade 1 certification, this lock meets the demanding requirements of commercial applications. The MA Series represents one of Falcon's toughest and most dependable lock lines, engineered for consistent performance in challenging commercial settings.

Product Specs

Product Group:
Mechanical Locks
Series:
MA Series
Grade:
Grade 1
Duty Level:
Heavy Duty
Keyed Function:
Single Cylinder
Subcategory:
Mortise Locks
Keyed:
Yes
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Lock Type:
Mortise
Commercial/Residential:
Commercial
Electronic:
No
UL Listing Type:
UL listed 3-hour fire door, A label
Lock Function:
Apartment Corridor
Product Attribute:
Mortise Locks
Tags:
falcon ms531, ma531
Product Model:
MA531
Product Function:
Corridor
Door Hand Direction:
Field Reversible
Fire Rating:
Yes
Product Category:
Mechanical Locks
Department:
Door Hardware

Falcon MA531P DG 626 – Frequently Asked Questions

1) What does the apartment corridor function on the Falcon MA531 actually do at the door?
Apartment corridor is the function you want on a unit entry door off a shared hallway. The MA531 is a keyed single-cylinder mortise lock with a deadbolt, so the tenant throws the deadbolt from inside by thumbturn and keys it from the corridor side. Latch and deadbolt both retract with the inside lever in one motion for egress. It is a Grade 1 lock built for commercial traffic, not a residential-duty unit.
2) Can I use the Falcon MA531 on a fire-rated apartment entry door?
Yes. The MA531 is UL listed for 3-hour A label fire doors, which covers the typical apartment entry off a rated corridor. It also meets ANSI/BHMA 156.13 Series 1000 for mortise locksets. One caution that is not about the lock: on a rated opening the deadbolt has to retract with the latch from the inside lever in a single motion, which is how the corridor function works, so do not substitute a separate deadbolt above it.
3) Do I have to order the Falcon MA531 left hand or right hand?
No handing to specify. The MA531 is field reversible, so one lock covers both hands and you re-hand it on site without extra parts. For a property manager stocking spares across a building, that means a single part number sits on the shelf for every unit door regardless of swing.
4) Can I get the Falcon MA531 to work with my building's existing SFIC core system?
Yes, order it as the B option, which ships less small format interchangeable core so you drop in the cores you already keep. If you run conventional cylinders instead, P is a conventional 6-pin and CP6 is a conventional 6-pin cut to the Schlage C keyway. L is less conventional cylinder for when you supply your own. Choosing B or L is also how you keep the lock inside an existing master key system rather than starting a new one.
5) I need all the apartment doors in my building keyed alike but the MA531 keyed to a different system on the storage rooms. Can I do that?
Yes. Keying on the MA531 is specified per order as keyed different, keyed alike, or to a key code you supply, so one group of units can share a key while another group runs on its own code. If you would rather control keying entirely in house, order the B (less SFIC) or L (less conventional cylinder) version and pin your own cores. SFIC is the usual pick in high-turnover multi-family because a core swap on a move-out takes seconds and no lock comes off the door.
6) What else could I buy instead of the Falcon MA531 for a corridor or dormitory entry door?
The closest equivalent from another brand is the Sargent 7925, a Grade 1 heavy duty mortise lock with corridor/dormitory function and a single cylinder deadbolt, in rose trim rather than escutcheon. If the opening only needs entry without a deadbolt in the body, the Cal-Royal NM8050 is a Grade 1 office/entrance mortise lockset with an auxiliary deadlatch, rated for 1-3/4 inch doors. The Accentra 8805FL is Grade 1 mortise but storeroom function, which locks the outside lever permanently and is wrong for a tenant door.
7) Is the Falcon MA531 the right lock for a classroom or storeroom door?
No. The MA531 is apartment corridor function, meant for a tenant-controlled entry with a thumbturn deadbolt inside, which is not what you want on a classroom or a stock room. For classroom, the Cal-Royal NM8070 is Grade 1 mortise for 1-3/4 inch doors, or the Corbin Russwin ML2003 in the ML2000 Series. For storeroom, look at the Cal-Royal NM8080, Grade 1 with an interchangeable core option, or the Accentra 8805FL.
8) What is the closest equivalent to the Falcon MA531 apartment corridor mortise lock from another manufacturer?
The Sargent 7925 is the nearest peer in function. It is a Grade 1 heavy duty mortise lock in the 7900 Series with a corridor/dormitory function and a single cylinder deadbolt, which is the same combination the MA531 provides: an apartment corridor function mortise lock, Grade 1, heavy duty, single cylinder keyed. Both put a keyed outside lever and a deadbolt in one mortise case, so a corridor opening specified for one can generally be specified for the other. Confirm trim style and keyway separately, since lever and finish selections differ between the two lines.
9) Which mortise lock should I use on an apartment entry door if I do not need the deadbolt in the lock body?
The Baldwin 6301LS is an entrance/apartment function mortise lock body, lever by lever, with a 2-1/2 inch backset for doors 1-3/4 inch and over, and the knob by knob version is the Baldwin 6301. Those cover the apartment entry function without the deadbolt that the Falcon MA531 carries in the same case. If the unit door needs a separate deadbolt, the Sargent 4874 is a double cylinder mortise deadbolt on a 2-3/4 inch backset and can be mortised above the latch.
10) What is the difference between an apartment corridor mortise lock and a storeroom mortise lock?
They are different functions and are not interchangeable on the same opening. The Falcon MA531 is an apartment corridor function lock, keyed single cylinder with a deadbolt in the case, which is the arrangement used on multi-family unit doors where the resident throws a deadbolt from inside. A storeroom lock such as the Accentra 8805FL, a Grade 1 storeroom mortise lock in the 8800 Series, or the Cal-Royal NM8080 Grade 1 storeroom mortise lockset for 1-3/4 inch doors, keeps the outside lever locked at all times with key entry and no deadbolt. Specify storeroom for equipment and utility rooms, corridor for the unit door.
11) Is there an electronic mortise lock that covers apartment entry instead of a keyed mechanical one?
Yes. The Schlage Electronics LEBMB-ADD is a mobile-enabled mortise lock with push button and LED covering privacy, office and apartment functions, Grade 2, with a 3 hour fire rating for 1-3/4 inch doors. For a Grade 1 electronic option, the Schlage Electronics LEMD-GRW is an ENGAGE Series wireless mortise lock with a 125kHz proximity reader and a mobile enabled deadbolt with LED, Grade 1 with a 3 hour fire rating. The Falcon MA531 is a mechanical, non-electronic lock, so choosing either of these changes the opening from key-only to credential-managed access and adds power and programming to the scope.
12) Which mortise lock do I use if the corridor door has to be released from an access control system?
An electrified mortise body. The Schlage L9092EU with 03A trim is a heavy duty corridor function mortise lock, electric lock/unlock outside lever, keyed outside, with request to exit and 12/24VDC operation for 1-3/4 inch doors. The Command Access ML190 Series is a heavy-duty motorized mortise lock with field selectable fail safe and fail secure operation on 24VDC in a storeroom function. The Falcon MA531 is a mechanical corridor lock with no electronics, so it is the choice where the opening is key managed rather than tied to a card system.
13) Which mortise lock fits a narrow stile aluminum storefront door?
The Falcon MA531 is a heavy duty mortise lock built to ANSI A115.1 frame prep and is not intended for a narrow aluminum stile. For storefront, the Alarm Lock DL1300NW is a Trilogy Networx wireless electronic mortise lock with keypad made for Adams Rite deadlatches, and the Kaba Ilco BR Series is a glass door bottom rail lock. The Dormakaba E-Plex 2066 Series is a wide stile electronic pushbutton keyless mortise lock, so confirm the stile width on the door before choosing it.
14) What do I have to specify when ordering a Falcon MA531 mortise lock?
Four choices plus keying. Cylinder: P conventional 6-pin, CP6 conventional 6-pin in Schlage C keyway, B less SFIC, or L less conventional cylinder. Trim style: Gala or Napa. Lever: Avalon, Boardwalk, Broadway, Dane, Latitude, Longitude, Quantum or Sutro. Finish: 605 bright brass, 606 satin brass, 613 oil-rubbed satin bronze, 619 satin nickel, 622 matte black, 625 bright chrome, 626 satin chrome, 630 satin stainless, 643E aged bronze. Keying is ordered separately as keyed different, keyed alike, or to a key code you supply.
15) Falcon MA531 versus a cylindrical lock for apartment entry doors - which should I be putting on unit doors?
A mortise lock like the MA531 puts the latch and a deadbolt in one body inside a pocket cut into the door edge, so the tenant gets deadbolt security without a second lock and second bore. A cylindrical lock, for example the Schlage PC10, mounts through two bores and has no deadbolt in the body. If your doors are already mortise-prepped, stay mortise. If they are bored doors and you switch to mortise, you are cutting a new pocket in every leaf, which is a different scope of work.
16) Will the Falcon MA531 hold up in a high-turnover apartment building or student housing?
That is what it is built for. Heavy duty, Grade 1 operational and security, with forged escutcheons and cold-formed steel parts finished in zinc plate and dichromate for corrosion resistance. The latch is a 2-piece anti-friction stainless steel bolt, which is what keeps it retracting cleanly on a door that gets slammed and on frames that are slightly out of alignment.
17) Does the Falcon MA531 need power or wiring run to the door?
No power at the door. The MA531 is purely mechanical, key and lever operated, with no electronics in it. If your project actually calls for access control on the unit doors, that is a different product family: the Schlage LEMD-GRW is a Grade 1 wireless mortise lock with a proximity reader and a 3-hour fire rating, and the Schlage CO-100-MS is a standalone keypad mortise lock for 1-3/4 inch doors. Choosing mechanical here means no batteries to change across a hundred doors.
18) Will the Falcon MA531 drop into my existing mortise pocket and frame prep?
The MA531 is prepped to ANSI Standard A115.1 for the frame, which is the standard mortise frame prep, so a frame already cut to A115.1 takes it. Confirm your door pocket matches the MA Series body before you order, because mortise pocket depth and the cylinder and thumbturn hole spacing vary between manufacturers and a mismatch means routing the door.
19) Does the Falcon MA531 come with a cylinder, or do I order that separately?
Depends which version you pick. P and CP6 arrive with a conventional 6-pin cylinder in the box, CP6 already in the Schlage C keyway. B and L ship without a cylinder, B prepped for a small format interchangeable core and L for a conventional 6-pin, so on either of those you supply the core or cylinder yourself. A locksmith re-keying an existing system usually wants B or L; a single door replacement usually wants P.
20) Can a mortise deadbolt be used in place of the Falcon MA531 on a unit door?
Not on its own. The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset, and the Kaba Ilco 185 Series is a deadbolt function mortise lock supplied with no handing. Both are deadbolt-only bodies with no latch and no lever, so a door fitted with one of them still needs a separate latching lockset for corridor use. The Falcon MA531 combines the keyed single cylinder lever function and the deadbolt in one case, so it fills the same mortise pocket a deadbolt-only body would only partly serve.
21) What looks like a substitute for a Falcon MA531 but will not lock the door?
Non-keyed mortise bodies in the same size family. The Schlage PM010 is a Grade 1 passage latch mortise lock, non-keyed, for 1-3/4 inch doors, and the Hager 3810E and 3810S are 3800 Series passage mortise locks on a 2-3/4 inch backset. The Schlage L0170 is a half dummy trim, Grade 1 mortise non-keyed dummy function, and the Emtek 3102 Memphis and Emtek 3104 Hamilton are dummy function mortise entrance locksets. Passage bodies latch but never lock, and dummy trim does neither. The Falcon MA531 is keyed, so none of these carry the corridor security function.
22) I need a mortise lock with a deadbolt for a bathroom or bedroom rather than a corridor door. What should I order?
Privacy function is the correct call there. 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 3800 Series Grade 1 privacy mortise lock on a 2-3/4 inch backset for doors 1-3/4 to 2 inches. Both hold the deadbolt the Falcon MA531 has, but the privacy function is thumbturn operated from inside with emergency release rather than key operated for corridor access, which is why the MA531 stays on the unit entry and the privacy body goes on the interior door.
23) Which heavy duty mortise lock bodies are alternatives to a Falcon MA531 for a building entrance instead of a unit door?
The BEST 45H Series is a heavy duty mortise lock body with a public entrance function and field reversible operation, which suits a lobby or building entrance where the outside lever is unlocked during business hours and secured after. The Cal-Royal NM8050 is a Grade 1 heavy duty office/entrance mortise lockset with auxiliary deadlatch for 1-3/4 inch doors. Both are heavy duty like the Falcon MA531, and the MA531 is likewise field reversible, so handing is not the deciding factor between them; the function on the door schedule is.
24) Is a cylindrical lock an acceptable substitute for a Falcon MA531?
Only if the door is prepped for one. The Schlage PC10 is a Grade 1 passage cylindrical lock, non-keyed with rose, for 1-3/4 inch doors, and it mounts in a bored hole rather than a mortise pocket. The Falcon MA531 is a mortise lock and requires a routed mortise pocket in the door edge along with frame preparation to ANSI A115.1. Swapping between the two means changing the door prep, so the two are not drop-in alternatives for each other on an existing opening.
25) What mortise lockset should I specify instead of a Falcon MA531 for a behavioral health or ligature resistant opening?
The TownSteel MRX-L-01 is a Grade 1 heavy duty stainless steel anti-ligature lever mortise lockset in a passage function for 1-3/4 inch doors, and the MRX-A-01 is the arch trim version, also Grade 1 heavy duty passage in satin stainless steel. 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. All three hold Grade 1 like the Falcon MA531, but they are passage function trim shaped to shed a ligature, where the MA531 is a keyed corridor lock with levers.
26) What mortise lock has an integrated keypad if I want to stop issuing keys to residents?
Several bodies replace the cylinder with a keypad. The Alarm Lock DL3500CR is a Grade 1 Trilogy electronic mortise lock with 300 user codes in a classroom function for doors 1-5/8 to 1-7/8 inch, and the DL2700CR is a Grade 1 Trilogy T2 electronic mortise lock, classroom function, weatherproof, for the same door thickness range. The Alarm Lock DL4500 is a Grade 1 electronic mortise deadbolt with 2,000 user codes and a privacy keypad. The BEST 45HZ EZ Series is an electronic keypad mortise lock with key override. The Falcon MA531 is keyed single cylinder and takes either a conventional cylinder or a small format interchangeable core, which is the path for a property that wants to re-key rather than re-program.
27) What mortise lock covers a classroom door that also needs to lock down from inside?
The BEST 45HCA Series is a heavy duty mortise lockbody with an intruder function, which lets the door be secured from the classroom side without opening it. The TownSteel FME-4000 Series is a Grade 1 heavy duty electronic intruder classroom mortise lockset with RFID technology for 1-3/4 inch doors, and the FME-2000 Series is the Grade 1 heavy duty classroom RFID mortise lockset without the intruder function. The Falcon MA531 is an apartment corridor function and does not provide inside lockdown, so an intruder or classroom security body belongs on that opening instead.
28) What is the difference between a complete mortise lockset and a mortise lock body when I am replacing a Falcon MA531?
A lock body is the case only, with trim ordered separately. The BEST 45H Series and the BEST 45HCA Series are heavy duty mortise lock bodies, and the Baldwin 6310 is an entry/storeroom knob by knob mortise lock body on a 2-1/2 inch backset for doors 1-3/8 inch and over. The Falcon MA531 is ordered with the trim selected as part of the item, including lever style and Gala or Napa trim style, so a body-only peer needs matching levers and escutcheons added to the order before it becomes a complete opening.
29) Which mortise lock works on a thinner ornamental iron or glass door instead of a Falcon MA531?
The Marks USA 21AC and 22AC are entrance double cylinder ornamental iron mortise locks with a round knob, both listed for 1 inch door thickness. That is well below what a heavy duty commercial mortise body like the Falcon MA531 is built into, and the double cylinder arrangement means a key is required from both sides rather than the single cylinder keying the MA531 uses. Check egress code for the opening before specifying a double cylinder lock.
30) Which mortise lock has a card reader built into the lock for a hotel or multi-family property?
The Dormakaba Saffire LX-I-M002 is an electronic RFID mortise lockset with BLE mobile access at BHMA Grade 2. The Accentra NTM623-NR is a nexTouch Generation 3 mortise lock with a capacitive touchscreen keypad and no deadbolt, with cylinder override. The Dormakaba E-Plex E5086 is a Grade 1 entry/egress electronic pushbutton and card lock in a back to back mortise configuration, and the PowerPlex P2066 Series is a mortise lock in the same family. The Falcon MA531 is the mechanical alternative to all of these, keyed single cylinder with a deadbolt in the case and no power required at the door.
31) Which mortise lock handles a right hand reverse opening without field re-handing?
The Baldwin 6310190RRLS is supplied as a right hand reverse entry/storeroom lever by lever mortise lock on a 2-1/2 inch backset for doors 1-3/8 inch and over, so handing is fixed at the factory and has to be ordered correctly. The Falcon MA531 is field reversible, so one part number covers either hand and the handing is set during installation. That matters when a property manager is stocking spares across a building and does not want to hold both hands of the same lock.
32) Can I order just a thumbturn to add a deadbolt function rather than replacing the whole mortise lock?
A thumbturn is trim, not a lock. The Sargent 130KB is a standard duty mortise thumbturn in the 8200 Series and the 130W is a standard duty mortise thumbturn with a round backplate in the 7800 Series. Each operates a deadbolt already inside a compatible mortise case; neither adds a bolt to a door that does not have one. The Falcon MA531 already carries the deadbolt in the lock body as part of the apartment corridor function, so no separate thumbturn item is needed to get that behavior.
33) What is a medium duty mortise alternative for a low traffic interior opening?
The Codelocks CL2255 is a medium duty electronic tubular mortise latch in the CL2000 Series with a brushed steel finish. It is a latch with code entry for an interior door that sees light use. The Falcon MA531 is a heavy duty Grade 1 body built for high traffic and high abuse, which is why it is the one specified on corridor and unit entry doors and the medium duty latch is not.
34) Which mortise lock should I use for an office door that locks with a key from the corridor but stays free from inside?
The Hager 3850E is a 3800 Series Grade 1 office mortise lock with lever and escutcheon on a 2-3/4 inch backset, non-keyed, for doors 1-3/4 to 2-1/2 inch, and the Cal-Royal NM8050 is a Grade 1 heavy duty office/entrance mortise lockset with auxiliary deadlatch for 1-3/4 inch doors. Office function suits a tenant suite or private office. The Falcon MA531 stays on the residential unit door, where the apartment corridor function with a deadbolt in the case is what the opening calls for.
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Does the Falcon MA531P DG 626 come with a warranty?
Absolutely. The Falcon MA531P DG 626 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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