Cal-Royal NM8070 Heavy Duty Gr...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$316.13
Cal-Royal Cal-Royal NM8070 Heavy Duty Grade 1, Classroom Mortise Lockset NM Series NM8070

Cal-Royal NM8070 Heavy Duty Grade 1 Classroom Mortise Lockset with Auxiliary Deadlatch

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Model: NM8070-SS-RH-US26D
$316.13
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$316.13
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Cal-Royal NM8070 Heavy Duty Grade 1 Classroom Mortise Lockset with Auxiliary Deadlatch

The Cal-Royal NM8070 is a Heavy Duty Grade 1 Classroom (F05) function mortise lockset engineered for 1-3/4" thick doors with a 2-3/4" backset. The outside key locks and unlocks the outside lever, while the inside lever remains always free for immediate exit, making this an ideal solution for classroom and institutional doors. Built with a heavy gauge zinc chromate steel lockcase and an 8" x 1-1/4" x 3/32" heavy gauge steel front, the NM8070 meets ANSI/BHMA A156.13, Series 1000, Operational & Security Grade 1 Standards and exceeds 1,000,000 cycles of testing, with UL Listed "A" Label (3-hour) fire door certification.

Key Features

  • Door Thickness Compatibility: Designed for 1-3/4" thick doors with a 2-3/4" backset for standard commercial door prep.
  • Escutcheon Dimensions: 2 ½" W x 8 ¼" H x ½" T trim for a clean, secure fit.
  • Exceptional Durability: Exceeds 1,000,000 cycles per ANSI/BHMA A156.13 testing, ensuring long-term reliability in high-traffic classroom and institutional settings.
  • Heavy-Duty Construction: Heavy gauge zinc chromate steel lockcase and heavy gauge steel front accommodate flat doors and doors beveled 1/8" in 2", with a wrought brass armored front attached by machine screws that conceals mounting screws.
  • Robust Bolt Components: 1" throw brass deadbolt, chrome plated with hardened steel rollers and anti-saw pins; brass chrome plated latchbolt with heavy-duty auxiliary deadlatch that deadlocks when the door is closed; extruded brass chrome plated guardbolt; rocker-type brass chrome plated stopworks.
  • 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 but easily field-reversible for flexible installation on either door swing.
  • Cylinder Compatibility: 6-Pin solid brass "C" Keyway standard cylinder, with optional interchangeable core available.

Certifications & Compliance

  • UL Listed "A" Label (3 hours) for use on fire doors, single or pair, with "F" mark stamped on strike
  • Meets ANSI/BHMA A156.13, Series 1000, Operational & Security Grade 1 Standards
  • Lock body conforms to Federal Specification Type 86; exceeds 1,000,000 cycles
  • Conforms to UL10C and UBC 7-2-1997 standards
  • Meets ADA (American Disability Act) regulations with forged brass lever handles
  • BHMA Certified Lifetime Warranty, Grade 1

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
  • Lock Type: Mortise
  • Keyed: Yes
  • Product Attribute: Mortise Locks
  • Electronic: No
  • 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 NM8070?

Cal-Royal NM8070 mortise locksets deliver professional-grade reliability with a heavy gauge zinc chromate steel lockcase, forged brass lever handles, and hardened steel components rated to exceed 1,000,000 cycles under ANSI/BHMA A156.13 Grade 1 testing. Engineered for demanding classroom and institutional applications where dependable performance and fire-rated compliance are 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:
Classroom
Keyed:
Yes
Product Attribute:
Mortise Locks
Electronic:
No
Product Model:
NM8070
Product Function:
Classroom
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 NM8070-SS-RH-US26D – Frequently Asked Questions

1) Will the Cal-Royal NM8070 mortise lock fit a 1-3/4 inch door with a standard 2-3/4 inch backset prep?
Yes. The NM8070 is built for 1-3/4 inch doors with a 2-3/4 inch backset, which is the standard commercial mortise prep. It handles flat doors and doors beveled 1/8 inch in 2 inches. If your doors are thicker than 1-3/4 inches, this is not the lock for that opening.
2) What does classroom function mean on the Cal-Royal NM8070, and how does the lock actually operate?
Classroom (F05) function: the outside key locks and unlocks the outside lever. Once locked by key, the outside lever stays rigid until the key unlocks it again. The inside lever is always free, so anyone inside can exit at any time without a key or a thumbturn. That is why it is used on classroom and institutional corridor doors, and it also means there is no way to lock the door from inside the room.
3) Can the Cal-Royal NM8070 mortise lockset go on a 3-hour fire rated door?
It can. The NM8070 is UL Listed "A" Label, 3 hours, for fire doors, single or pair, with the "F" mark stamped on the strike, and it conforms to UL10C and UBC 7-2-1997. Inspectors typically look for that F stamp on the strike, so keep the supplied strike with the lock rather than reusing an old one.
4) Do I need to order the Cal-Royal NM8070 handed, or can I reverse it in the field?
You pick a hand when ordering, right hand or left hand, but the lock is field reversible, so an installer can flip the handing on site if the door turns out to swing the other way. That matters for a property manager buying several at once: you are not stuck with a dead unit if a door was mismeasured.
5) Will the Cal-Royal NM8070 latch into the strike already in my frame?
It ships with its own brass non-handed curved strike, 4-7/8 by 1-1/4 inches, which is the common ANSI-size mortise strike footprint. A curved-up strike is available on request. The deadbolt has a 1 inch throw, so the frame pocket has to be deep enough to take it. On a fire door, use the supplied strike, since the fire listing depends on the "F" mark stamped on it.
6) We want keypad or credential access on our classroom doors rather than a key - what mortise locks cover that?
Several electronic classroom mortise locks cover that duty. The TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise lockset with RFID technology for 1-3/4 inch doors, and the FME-4000 is a Grade 1 heavy duty electronic intruder classroom mortise lockset with RFID for the same door thickness. Alarm Lock's Trilogy DL3500CR is a Grade 1 electronic classroom mortise lock with 300 user codes for doors 1-5/8 to 1-7/8 inches thick, and the DL2700CR is a Grade 1 Trilogy T2 classroom mortise lock with a weatherproof design for the same thickness range. The Cal-Royal NM8070 is a non-electronic keyed mechanical lockset, so those are the credential-based alternatives.
7) What is the closest mechanical equivalent to the Cal-Royal NM8070 classroom mortise lockset from another manufacturer?
The Corbin Russwin ML2003 is the nearest straight equivalent. It is a Grade 1 classroom function mortise lockset from the ML2000 Series built for 1-3/4 inch doors, matching the NM8070 on grade, classroom function, and door thickness. The NM8070 is keyed with a 6-pin solid brass C keyway standard cylinder and carries a 1 inch deadbolt throw, so confirm the keyway and cylinder arrangement you need when cross-specifying.
8) What is the difference between the NM8070 classroom function and a storeroom mortise lock like the Accentra 8805FL?
Function is the difference. The Accentra 8805FL is a Grade 1 storeroom function mortise lock in the 8800 Series with an Arcadia lever; a storeroom outside lever stays locked at all times and is retracted only by key. The Cal-Royal NM8070 is F05 classroom function, where the outside key locks and unlocks the outside lever so staff can leave the room unlocked for a class period, and the inside lever is always free for immediate exit. Both are Grade 1.
9) Is the BEST 45HCA intruder function lock body a substitute for the NM8070 on a classroom door?
They are not interchangeable in operation. The BEST 45HCAINL is a heavy duty mortise lockbody with intruder function, which lets the door be locked down from inside the room without opening it. The Cal-Royal NM8070 is a classroom function lockset keyed from the outside only, so lockdown requires a key on the corridor side. The TownSteel FME-4000 is a Grade 1 heavy duty electronic intruder classroom mortise lockset if you need intruder function with credentials. Note also that the BEST 45H Series items are lock bodies, while the NM8070 is supplied as a complete lockset with escutcheon or sectional trim and forged brass levers.
10) Will a Baldwin 6310 mortise lock body drop into the same door prep as the Cal-Royal NM8070?
No. The Baldwin 6310 entrance/storeroom mortise lock body uses a 2-1/2 inch backset, while the Cal-Royal NM8070 is built to a 2-3/4 inch backset, so the cylinder and knob or lever centerlines do not line up with standard commercial 2-3/4 inch prep. Baldwin lists the 6310 for doors 1-3/8 inch and over, and a lever-by-lever version is the 6310190RRLS. If you are matching an existing 2-3/4 inch commercial prep, the Hager 3800 Series mortise locks also use a 2-3/4 inch backset.
11) We need the door to lock and unlock remotely from an access control panel - what replaces the NM8070?
For panel-controlled operation, look at electrified mortise locks. 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 and 12/24VDC operation. The Command Access ML190 is a heavy duty motorized mortise lock with field selectable fail safe or fail secure operation on 24VDC in storeroom function, and the BEST 45HW is a heavy duty wired electromechanical mortise lock with 12V/24V operation. The Cal-Royal NM8070 is a mechanical lockset with no electrical option.
12) For a behavioral health or ligature resistant opening, what mortise lockset should I specify instead of the NM8070?
TownSteel's MRX line is the anti-ligature option: the MRX-L-01 is a Grade 1 heavy duty stainless steel anti-ligature lever mortise lockset in passage function for 1-3/4 inch doors, and the MRX-A-01 is a Grade 1 heavy duty passage mortise lockset with satin stainless ligature resistant arch trim for the same door thickness. Marks USA also offers the 5PDN, a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant and ADA compliant in satin stainless steel. The Cal-Royal NM8070 uses forged brass lever handles that meet ADA regulations, but it is a keyed classroom lockset rather than a ligature resistant design.
13) Which mortise locks besides the NM8070 are rated for 3-hour fire doors?
The Cal-Royal NM8070 is UL Listed A Label for 3 hours on fire doors, single or pair, with the F mark stamped on the strike. Among comparable mortise products, the Schlage Electronics LEMD-GRW ENGAGE Series wireless mortise lock is Grade 1 with a 3-hour fire rating, and the Schlage Electronics LEBMB-ADD mobile-enabled mortise lock also carries a 3-hour fire rating at Grade 2. The Falcon MA101 Grade 1 heavy duty mortise passage lock is fire rated as well. Confirm the function each one provides matches the opening before substituting.
14) What cylinder and keyway comes in the Cal-Royal NM8070, and can I key it into an existing system?
It comes with a 6-pin solid brass cylinder in the "C" keyway as standard, and an interchangeable core version is available if your building runs IC cores. A locksmith keying this into an existing master system will want to confirm the house keyway before ordering, since the standard build is C.
15) Is the Cal-Royal NM8070 rated for high-traffic school and hospital corridors?
It meets ANSI/BHMA A156.13, Series 1000, Operational and Security Grade 1, with a lock body conforming to Federal Specification Type 86, and exceeds 1,000,000 cycles of testing. Grade 1 is the top commercial tier and the level most school districts and healthcare facilities spec for corridor doors. The lockcase is heavy gauge zinc chromate steel with an 8 by 1-1/4 by 3/32 inch steel front.
16) Does the Cal-Royal NM8070 meet ADA lever requirements?
The NM8070 meets ADA regulations, using forged brass lever handles rather than knobs. Levers are what ADA requires on accessible openings, so this works for a barrier-free corridor or classroom door.
17) What is the difference between the Cal-Royal NM8070 and the Corbin Russwin ML2003 classroom mortise lock?
Both are Grade 1 classroom-function mortise locks for 1-3/4 inch doors, so either will cover the same opening. The ML2003 is Corbin Russwin's ML2000 Series, which is the spec most often written on institutional jobs already standardized on that line. The NM8070 carries a UL "A" Label 3-hour fire listing and a 1 inch brass deadbolt with anti-saw pins alongside the auxiliary deadlatch. If your building is already keyed and standardized on one of those two lines, stay with it.
18) Does the Cal-Royal NM8070 have both a deadbolt and a latch?
Both. There is a brass chrome plated latchbolt with a heavy duty auxiliary deadlatch that deadlocks the latch when the door closes, plus a separate 1 inch throw chrome plated brass deadbolt with hardened steel rollers and anti-saw pins. An extruded brass guardbolt and rocker-type stopworks are also in the case. The deadlatch is what stops someone loiding the latch with a card.
19) Our doors are thicker or thinner than 1-3/4 inch - what mortise locks cover a wider door thickness range than the NM8070?
The Cal-Royal NM8070 is built specifically for 1-3/4 inch thick doors. If your openings vary, the Hager 3800 Series covers a broader band: the 3810E passage with escutcheon and the 3850E office lock with lever and escutcheon are both listed for doors 1-3/4 to 2-1/2 inches thick with a 2-3/4 inch backset, and the 3810S rose version covers the same range. Those are non-keyed functions, so match the function to the opening before substituting.
20) Is a mortise deadbolt like the Sargent 4874 or Kaba Ilco 185 an alternative to the NM8070?
No, those are deadbolt-only bodies with no latch or lever operation. The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset, matching the NM8070 backset, and the Kaba Ilco 185 Series is a non-handed mortise deadbolt. The Cal-Royal NM8070 is a complete classroom lockset combining a 1 inch throw deadbolt, a latchbolt with auxiliary deadlatch, and lever trim, so it handles both latching and locking on its own. Use a mortise deadbolt only where you are adding a separate bolt above an existing latch.
21) I need the same look on doors that don't need to lock. What matches the Cal-Royal NM8070 on passage openings?
The NM8070 itself is keyed classroom function only, so it is the wrong part for a passage opening. For non-locking doors in the same building, Falcon's MA101 is a Grade 1 heavy duty mortise passage lock that is also field reversible and fire rated, and Schlage's PM010 is a Grade 1 non-keyed passage mortise latch for 1-3/4 inch doors. Trim and finish will not match the Cal-Royal exactly, so if appearance across the corridor matters, ask for the matching Cal-Royal passage function from the same NM series.
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Does the Cal-Royal NM8070-SS-RH-US26D come with a warranty?
Absolutely. The Cal-Royal NM8070-SS-RH-US26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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