Cal-Royal NM8453 Heavy Duty Gr...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$305.93
$256.22
Cal-Royal NM8453 Heavy Duty Grade 1 Entrance Mortise Lockset with Interchangeable Core Option

Cal-Royal NM8453 Heavy Duty Grade 1 Entrance Mortise Lockset with Interchangeable Core Option

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Model: NM8453-SE-RH-US26D
$305.93
$256.22
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$305.93
$256.22
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Cal-Royal NM8453 Heavy Duty Grade 1 Entrance Mortise Lockset with Interchangeable Core Option

The Cal-Royal NM8453 is a Heavy Duty Grade 1 entrance mortise lockset engineered for doors 1-3/4" thick with a 2-3/4" backset. Built with a heavy gauge zinc chromate steel lockcase and an 8" x 1-1/4" x 3/32" heavy gauge steel front, this lockset accommodates flat doors and doors beveled 1/8" in 2". It meets ANSI/BHMA A156.13, Series 1000, Operational & Security Grade 1 Standards, exceeds 1,000,000 cycles, and carries a UL Listed "A" Label (3 hours) rating for fire door applications.

Key Features

  • Door & Backset Compatibility: Designed for 1-3/4" thick doors with a 2-3/4" backset lock case for precise commercial door fit.
  • Escutcheon Dimension: Measures 2 ½" W x 8 ¼" H x ½" T for standard trim applications.
  • Heavy-Duty Durability: Exceeds 1,000,000 cycles and conforms to Federal Specification Type 86 for long-term reliability in high-traffic commercial applications.
  • Heavy-Duty Construction: Forged brass lever handles, brass chrome-plated 1" throw deadbolt with hardened steel rollers and anti-saw pins, and a ¾" anti-friction latch bolt for exceptional durability.
  • Armored Front Plate: Wrought brass armored front attached by machine screws conceals lock mounting screws for added security.
  • Strike Plate: Brass, non-handed curved strike measuring 4-7/8" x 1-1/4", with a curved-up strike available upon request.
  • Field-Reversible Handing: Handed design with individual spring construction that prevents lever sag and allows easy field reversal.
  • Cylinder Compatibility: Equipped with a 6-pin solid brass "C" keyway standard, with an optional interchangeable core available.
  • ADA Compliant Design: Forged brass lever handles exceed ADA (American Disability Act) requirements for accessible operation.

Certifications & Compliance

  • ANSI/BHMA A156.13, Series 1000, Operational & Security Grade 1 Standards
  • UL Listed "A" Label (3 hours) for fire doors, single or pair, conforms to UL10C and UBC 7-2-1997
  • Conforms to Federal Specification Type 86
  • ADA Compliant
  • BHMA Certified Lifetime Warranty

Technical Specifications

  • Product Group: Mechanical Locks
  • ANSI/BHMA: Meets ANSI/BHMA A156.13, Series 1000, Operational & Security Grade 1 Standards Lock body conforms to Federal Specification Type 86, and all dimensional and operational performances, Exceeds 1,000,000 cycles
  • Product Subgroup: Mortise Locks and Trim
  • Product Type: Mortise Locks
  • Subcategory: Mortise Lockset
  • Latch Throw: 1" (deadbolt)
  • Commercial/Residential: Commercial
  • Cylinder and Keyways: 6-Pin solid brass "C" Keyway Standard
  • Keyed: Yes
  • Product Attribute: Mortise Locks
  • Electronic: No
  • Product Function: Entrance/Office
  • Door Hand Direction: Field Reversible
  • 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 Cal-Royal NM8453?

Cal-Royal NM8453 mortise locksets deliver professional-grade reliability with heavy gauge steel and forged brass construction tested to exceed 1,000,000 cycles. Backed by BHMA certification and a UL Listed 3-hour fire rating, this entrance lockset is engineered for demanding commercial applications where dependable, code-compliant performance is essential.

Product Specs

Product Group:
Mechanical Locks
ANSI/BHMA:
Meets ANSI/BHMA A156.13, Series 1000, Operational & Security Grade 1 Standards Lock body conforms to Federal Specification Type 86, and all dimensional and operational performances, Exceeds 1,000,000 cycles
UL Listing Type:
UL Listed "A" Label (3 hours), for use on fire doors, single or pair of doors. "F" mark stamped on strike
Grade:
Grade 1
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Subcategory:
Mortise Lockset
Latch Throw:
1" (deadbolt)
Commercial/Residential:
Commercial
Cylinder and Keyways:
6-Pin solid brass "C" Keyway Standard
Lock Type:
Mortise
Lock Function:
Entrance
Keyed:
Yes
Product Attribute:
Mortise Locks
Electronic:
No
Tags:
cal royal mortise lock, nm8453
Product Model:
NM8453
Product Function:
Entrance/Office
Door Hand Direction:
Field Reversible
Door Thickness Range:
1-3/4"
Door Strike:
Brass, non-handed curved Strike 4-7/8" x 1 1/4". Curved-up Strike available upon request
Product Category:
Mechanical Locks
Product Substrate:
Steel
Backset (Distance):
2-3/4"
Department:
Door Hardware

Cal-Royal NM8453-SE-RH-US26D – Frequently Asked Questions

1) Do I have to order the Cal-Royal NM8453 handed, or can I flip it on site?
Order either hand and you can still change it. The NM8453 ships handed, left or right, but the handing is field reversible, so a lock that shows up wrong for the opening can be turned without a replacement order. Individual spring construction in the trim keeps the lever from sagging after the reversal.
2) Can I use the Cal-Royal NM8453 on a 3-hour fire rated door?
Yes. The NM8453 carries a UL Listed "A" Label rating at 3 hours, for single doors or pairs, and conforms to UL10C and UBC 7-2-1997. The strike is stamped with the "F" mark, which is what an inspector looks for on a rated opening.
3) What do I have to specify when ordering a Cal-Royal NM8453?
Three things: handing (left or right), finish, and trim style. Finishes are US3 polished brass, US4 satin brass, US10B antique bronze oiled, US26 polished chrome, US26D satin chrome, and US32D satin stainless steel. Trim is either SE escutcheon or SS sectional. Every finish is offered in both hands and both trim styles. Cylinder is a 6-pin solid brass "C" keyway as standard; call out the interchangeable core option if your building is on an IC system.
4) Is the Cal-Royal NM8453 rated Grade 1 for a high traffic entrance?
It meets ANSI/BHMA A156.13, Series 1000, Operational and Security Grade 1, exceeds 1,000,000 cycles, and the lock body conforms to Federal Specification Type 86. That is the top mortise rating and the one a spec on a commercial entrance or a government job normally calls for.
5) Does the Cal-Royal NM8453 take an interchangeable core?
It ships with a 6-pin solid brass "C" keyway cylinder as standard, and an interchangeable core version is available as an option. If your property is already keyed on an IC system and you want the maintenance staff able to rekey by pulling cores, order the IC option rather than the standard cylinder.
6) What is the closest Grade 1 mortise equivalent to the Cal-Royal NM8453 for a 1-3/4 inch commercial door?
The NM8453 is a Grade 1 mortise lockset with an Entrance function, built for 1-3/4 inch doors with a 2-3/4 inch backset. The Corbin Russwin ML2003 of the ML2000 Series is also a Grade 1 mortise lock listed for 1-3/4 inch doors, but its function is Classroom rather than Entrance, so the outside lever is controlled by key rather than by the entrance cycle. For an opening where the lever is meant to be locked and unlocked from the inside as an office or entrance door, the NM8453 is the function match; the ML2003 suits a classroom door where the corridor side is keyed.
7) What replaces a Cal-Royal NM8453 when the door needs a keypad or credential instead of a key?
The NM8453 is a mechanical, non-electronic lockset keyed to a 6-pin brass C keyway. For an access-controlled opening, the Accentra NTM623-NR of the nexTouch Series is a Grade 1 mortise lock with a capacitive touchscreen keypad and cylinder override with no deadbolt, and the TownSteel FME-2000 Series is a Grade 1 heavy duty mortise lockset with RFID for 1-3/4 inch doors, the same door thickness the NM8453 is built for. The Schlage LEMD-GRW of the ENGAGE Series is a Grade 1 wireless mortise lock with a 125kHz proximity reader and a 3 hour fire rating.
8) What mortise lock should be used instead of the Cal-Royal NM8453 on a storeroom door that must stay locked at all times?
The NM8453 is an Entrance function lockset, which is intended for doors that are locked and unlocked as the space is occupied. For a storeroom opening where the outside lever is always locked and entry is by key only, the Accentra 8805FL of the 8800 Series is a Grade 1 mortise lock with a Storeroom function. The Baldwin 6310 is another storeroom-side option, an Entrance/Storeroom mortise lock body on a 2-1/2 inch backset for doors 1-3/8 inch and over, which matters because the NM8453 lock case is cut for a 2-3/4 inch backset and the two do not share a mortise pocket layout.
9) What looks like a substitute for the Cal-Royal NM8453 mortise entrance lockset but will not actually lock a door?
Several mortise entrance-styled products are dummy trim and have no working latch or bolt. The Emtek 3019 Brisbane, 3102 Memphis, 3104 Hamilton and 3106 Manhattan are all named mortise entrance locksets but carry a Dummy function, and the Schlage L0170 of the L Series is a Grade 1 heavy duty mortise non-keyed lever lock in a half dummy trim for 1-3/4 inch doors. The NM8453 is a keyed Entrance lockset with a 1 inch deadbolt throw, so a dummy will match the look on an inactive leaf but will not secure the opening.
10) What mortise lockset should be specified instead of the Cal-Royal NM8453 for a behavioral health or ligature-resistant opening?
The NM8453 uses forged brass lever handles on escutcheon or sectional trim, which is a standard commercial lever profile. For patient rooms and other anti-ligature areas, the TownSteel MRX-L-01 is a Grade 1 heavy duty stainless steel anti-ligature lever mortise lockset with a passage function for 1-3/4 inch doors, and the MRX-A-01 is the same passage function on ligature-resistant arch trim in satin stainless. The Marks USA 5PDN of the 195 Series is a Grade 1 hospital passage mortise push/pull paddleset, ligature resistant and ADA compliant in satin stainless steel. All three are 1-3/4 inch door products like the NM8453, and all three are passage rather than keyed entrance.
11) What mortise lock works with an access control system that needs to lock or unlock the lever electrically, unlike the Cal-Royal NM8453?
The NM8453 is a mechanical lockset with no electronic operation. Where the outside lever has to be released by a card reader or panel, the Command Access ML190 Series motorized mortise lock has field selectable electrically locked or unlocked operation on 24VDC with a Storeroom function and heavy-duty construction, and the BEST 45HW Wired Mortise Series is a heavy duty wired electromechanical mortise lock running 12V or 24V. The Schlage L9092EU with 03A trim is a heavy duty electric lock/unlock outside lever mortise lock for 1-3/4 inch doors, keyed outside, with request to exit on 12/24VDC, matching the door thickness the NM8453 is specified for.
12) Does the Cal-Royal NM8453 fit a narrow stile aluminum storefront door, or is another mortise lock needed?
The NM8453 is a commercial mortise lockset for 1-3/4 inch doors with an 8 inch x 1-1/4 inch steel front and a 2-3/4 inch backset lock case, which is a wood or hollow metal door prep. For aluminum storefront work, the Alarm Lock DL1300NW of the DL1300NW Series is a Trilogy Networx wireless electronic mortise lock with keypad made for Adams Rite deadlatches, the Dormakaba E-Plex 2066 Series is a wide stile electronic pushbutton keyless mortise lock, and the Kaba Ilco BR Series is a glass door bottom rail lock. Those address the stile widths and rail conditions a storefront presents.
13) What is the difference between the Cal-Royal NM8453 and a Baldwin 6301 mortise lock body for an apartment entrance?
Both cover an entrance door, but they are prepped differently. The Baldwin 6301 is an Entrance/Apartment mortise lock body on a 2-1/2 inch backset for doors 1-3/4 inch and over, offered knob by knob or, as the 6301LS, lever by lever. The NM8453 uses a 2-3/4 inch backset lock case with forged brass levers and an 8 inch steel front, and its handing is field reversible. The backset difference means the two mortise pockets and the cross-bore centerlines do not interchange without re-prepping the door.
14) Does the Cal-Royal NM8453 meet ADA for lever operation?
The forged brass levers exceed ADA requirements for accessible operation, so no tight grasping or wrist twisting is needed to retract the latch. That matters on any door in an accessible route, which in most commercial buildings is nearly all of them.
15) How secure is the deadbolt on the Cal-Royal NM8453 against attack?
The deadbolt is brass chrome-plated with a 1 inch throw and carries hardened steel rollers plus anti-saw pins, so a blade in the gap spins on the rollers instead of cutting. A wrought brass armored front held by machine screws sits over the lock mounting screws, hiding them from anyone working at the door edge.
16) What is the difference between an entrance mortise lock and a storeroom or classroom function?
Entrance/office function, which is what the NM8453 is, lets the inside lever always retract the latch and lets you leave the outside lever locked or unlocked as you choose, with a separate keyed deadbolt for after hours. Storeroom function keeps the outside lever locked at all times and is keyed every entry, like the Accentra 8805FL. Classroom function is locked and unlocked by key from the outside only, like the Corbin Russwin ML2003. Pick entrance where staff need to secure the door at close of business, storeroom where the door must never be left unlocked.
17) Can I standardize a whole building on the Cal-Royal NM8453 and match the non-keyed doors?
The NM8453 covers the keyed entrance and office openings, all on the same 1-3/4 inch door and 2-3/4 inch backset, in six finishes across both trim styles, so the doors read the same down a corridor. For the openings that do not get keyed, Hager's 3800 Series holds the same 2-3/4 inch backset in passage (3810E with escutcheon, 3810S with rose), privacy (3840S), and office non-keyed (3850E), so the backset and prep stay consistent across the floor.
18) Is there a simpler non-keyed mortise lock than the Cal-Royal NM8453 for interior doors that do not need to lock?
The NM8453 is keyed, with a 6-pin solid brass C keyway standard. Where a door only needs latching and no locking, the Falcon MA101 is a Grade 1 heavy duty mortise passage lock in the MA Series with field reversible operation and a fire rating, and the Schlage PM010 is a Grade 1 passage latch mortise lock listed non-keyed for 1-3/4 inch doors. The Hager 3810E of the 3800 Series is a Grade 1 passage mortise lock on a 2-3/4 inch backset with escutcheon trim, which matches the backset the NM8453 lock case uses, so a mixed run of entrance and passage doors can be prepped the same way.
19) Will an Alarm Lock Trilogy DL3500CR fit the same door prep as a Cal-Royal NM8453?
No, the door thickness ranges do not line up. The NM8453 is specified for 1-3/4 inch doors, while the Alarm Lock DL3500CR of the DL3500 Series is a Grade 1 classroom electronic mortise lock listed for doors 1-5/8 inch to 1-7/8 inch. The DL2700CR of the DL2700 Series and the DL4500 Series deadbolt carry that same 1-5/8 inch to 1-7/8 inch range. The Trilogy units are also classroom and deadbolt functions rather than the Entrance function the NM8453 provides, so they are a different opening decision, not a drop-in swap.
20) For a dormitory or corridor door, is the Cal-Royal NM8453 the right mortise function or is there a better fit?
The NM8453 is an Entrance function lockset. The Sargent 7925 of the 7900 Series is a Grade 1 heavy duty mortise lock with a Corridor/Dormitory function, rose trim and a single cylinder deadbolt, which is the function written for dorm and corridor openings where the occupant throws the bolt from inside. The BEST 45HCAC of the 45H Series is a heavy duty mortise lock body with a Public Entrance function and field reversible operation, matching the field reversible handing the NM8453 offers.
21) Is a Marks USA 21AC or 22AC ornamental iron mortise lock an alternative to the Cal-Royal NM8453?
They serve different doors. The Marks USA 21AC of the 21 Series and the 22AC of the 22 Series are entrance double cylinder ornamental iron mortise locks with a round knob, listed for 1 inch doors. The NM8453 is built for 1-3/4 inch thick doors. On a narrow ornamental iron or gate stile the 21AC and 22AC are the correct thickness; on a standard commercial 1-3/4 inch door the NM8453 is the one cut for the leaf.
22) For a privacy door such as a restroom or bedroom, what mortise lock takes the place of the Cal-Royal NM8453?
The NM8453 is a keyed Entrance lockset, which is not the function for a privacy door. The Hager 3840S of the 3800 Series is a Grade 1 privacy mortise lock with a 2-3/4 inch backset for doors 1-3/4 inch to 2 inch, the same backset the NM8453 lock case is cut for, so it prepped the same way on the stile. The Hager 3850E is an Office function mortise lock with lever and escutcheon, non-keyed, on a 2-3/4 inch backset for doors 1-3/4 inch to 2-1/2 inch, for a door that needs to be secured from inside without a cylinder.
23) How does the Cal-Royal NM8453 compare with a Grade 2 electronic mortise lock for a multi-family apartment entry?
The NM8453 is a Grade 1 mortise lockset meeting ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1, exceeding 1,000,000 cycles, with a UL Listed A Label 3 hour fire rating and an optional interchangeable core. The Schlage LEBMB-ADD of the LE Series is a Grade 2 mobile-enabled mortise lock for 1-3/4 inch doors with a 3 hour fire rating, offering privacy, office and apartment functions from a push button and LED. Both carry the 3 hour fire rating and suit a 1-3/4 inch leaf; the difference is the BHMA grade and whether the unit is credentialed or keyed to a brass cylinder.
24) What is the lock case on the Cal-Royal NM8453 made of, and will it hold up in a warehouse or school corridor?
Heavy gauge zinc chromate steel lockcase with an 8 x 1-1/4 x 3/32 inch heavy gauge steel front, forged brass levers, and a wrought brass armored front. Tested past 1,000,000 cycles and conforming to Federal Specification Type 86, it is built for commercial duty, which covers school corridors, warehouses, and multi-tenant entrances.
How fast can I get the Cal-Royal NM8453-SE-RH-US26D delivered?
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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 Cal-Royal NM8453-SE-RH-US26D come with a warranty?
Absolutely. The Cal-Royal NM8453-SE-RH-US26D 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 Cal-Royal NM8453-SE-RH-US26D?
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Product Reviews

  • 4
    Cal-Royal NM8453 Heavy Duty Grade 1, Entrance Mortise Lockset NM Series

    Posted by PAUL GOLL on Oct 8th 2024

    Good heavy duty product , ordered keyed the same, did not get that

!