Schlage ND78 - Grade 1 Classro...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,167.00
$735.21
Schlage ND78 - Grade 1 Classroom Security (180-Degree Lockdown) Cylindrical Lock

Schlage ND78 - Grade 1 Classroom Security (180-Degree Lockdown) Cylindrical Lock

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Model: ND78PD RHO 626
From the ND-Series Collection
$1,167.00
$735.21
Selected Finish is
Selected Lever Type is
Selected Cylinder is
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,167.00
$735.21
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Default Attributes
Style: Same lever, rose and finish for both sides of the door with coordinating latch and strike.
Latch: 13-247: 2-3/4" Backset-with 1-1/8" x 2-1/4" Square Corner Faceplate.
Strike: 10-025: 1-3/16" - Lip ANSI, No Box, 1-1/4" x 4-7/8".
Door thickness: 1-3/4".
Strike lip length: 1-3/16".
Keying (for P6, P and T cylinders): KD:Keyed different.
Keys (for P6, and P cylinders): Two nickel silver cut keys per lock.


ND82 - Classroom security lock(180°lockdown)

  • Lever with key cylinder both sides; deadlatch
  • In unlocked state latch is retracted by either lever
  • Outside lever is made inoperative by rotating key in either lever 180° counter-clockwise and returning to start position
  • Unlock outside lever by rotating key 180° clockwise in either lever and returning to start position
  • Inside lever always free for immediate egress
    Locks ordered in 626 finish come standard with instruction rose (47342586) identifying key rotation direction for rapid lockdown. Other finishes receive a standard rose.
    Note: Locks ordered with indicator trim fit 1-3/4" doors. Sold separate spacer kits allow application to doors 1-3/8" to 1-11/16".

Schlage ND SERIES OVERVIEW

The Schlage ND Series offers a full breadth of commercial lock options with a suited combination of mechanical, electrified and electronic options. This overview covers common characteristics for the mechanical and electrified lock information.

Beyond grade 1 performance is the hallmark of the mechanical and electrified locks. ND Series locks are tested to withstand 3,100 in-lb. of abusive lever torque - more than 2 1/2 times the Grade 1 standard requirement. Offset lever pull testing up to 1,600 lbs. assures you of the lock's superb resistance against pry bar attacks. More than strong, ND Series is built to last and shows nearly zero droop or wobble after 16 million cycles.

All ND Series locks including electronic and ligature-resistant trim use the common cylindrical ANSI 161 door preparation making them easily interchangeable. They are ideal for all new construction and retrofit applications.


ND Series Mechanical Lock

The ND mechanical lock, along with being Schlage’s best selling mechanical lock, is the foundation for both the wired electrified and NDE wireless electronic lock. Not only did Schlage invent the cylindrical lock, but they continue to make it better with capabilities such as:

  • Unparalleled strength - the lock prevents access even when subjected to torque loads up to 3,100 in-lbs (2.6x BHMA1), withstands pry bar attacks of 1,600 lbs (8x BHMA requirements1), and withstands 100 hammer blows (20x BHMA requirements1, 2)
  • Exceptional durability - cycle tested to over 16M cycles (16x BHMA requirements1) with near zero droop or wobble - without the use of set screws or O-rings
  • Improved feel - improved strength and durability are more than numbers, you can actually feel it in the lock
  • Improved installation - installation is even easier than before (and withoutany set screws or O-rings)

FEATURES & BENEFITS

Security

  • Significantly exceeds ANSI/BHMA Grade 1 requirements
  • No access with minimum 3,100 in-lb. abusive lever torque, the equivalent of over 690 lbs. applied to the end of a 4-1/2" lever, 2.6 times over the BHMA requirement*
  • No access with minimum 1,600 lbs. offset lever pull for protection against pry bar attacks, 8 times over the BHMA requirement*
  • 5 points of engagement provide nearly zero droop and wobble after 16 million cycles, 16 times over the BHMA requirement*, without the use of set screws or o-rings
  • High security locking when used with Primus XP UL 437 listed cylinders

Function availability and convenience

  • 24 mechanical/4 electrified functions in the ND Series (custom functions available upon request)
  • Multiple key systems available: open, patented and restricted
  • Four electrified functions auto-detect 12/24V DC operation and, with maximum current draws of 0.4 amps and 0.1 amps holding current eliminate heated levers
  • Indicator roses for classroom applications
  • Three spring cage sets support all Schlage plus eight competitive cylinder formats

Aesthetics

  • Nine lever and four rose designs
  • Ten available finishes
  • Perfectly suited to Schlage ALX Series grade 2 locks
  • Suites with Von Duprin exit devices and other Schlage products

Options

  • Vandlgard™ models have a lever that freely rotates up and down when locked to protect the chassis from excessive force on the lever to prevent vandlism.

*Beyond Grade 1 performance for ND Series locks with Schlage cylinders only (Conventional, FSIC & SFIC). Performance with non-Schlage cylinders will exceed BHMA grade 1 requirements, but the product performance may be less than that of Schlage cylinders.


AVAILABLE ND SERIES FUNCTIONS

Other ND Series models can be found in the ND Series section and in-depth function description are available in the ND Series catalog linked below, or in the image carousel above.

Non-keyed functions

  • ND10 ANSI F75 Passage Lock
  • ND12 ANSI F89 Exit Lock (mechanical and electrified)
  • ND40 ANSI F76 Privacy Lock
  • Plus four additional functions

Keyed functions

  • ND50 ANSI F82 Entrance/Office Lock
  • ND53 ANSI F109 Entrance Lock
  • ND70 ANSI F84 Classroom Lock
  • ND80 ANSI F86 Storeroom Lock (mechanical and electrified)
  • Plus six additional functions

Special functions

  • ND30 ANSI F77 Patio Lock
  • ND72 ANSI F80 Communicating Lock
  • Plus five additional functions

CERTIFICATIONS & TESTING

To see all specifications and certifications, review the ND Series catalog in the links below.

Certifications

  • Tested and certified under ANSI/BHMA A156.2 Series 4000, Grade 1
  • UL/cUL listed: All locks 3-hour, A label fire door 4' x 10' single door and 8' x8' pair doors; 90-minute 8' x 10' pair doors with 3/4" latch option
  • Meets ADA requirements
  • Meets BAA (Buy American Act)
  • ANSI/BHMA Certifications: All ND Series comply with A156.2 performance requirements for grade 1 cylindrical locks. Wired electrified complies with A156.25 (indoor), wireless electronic complies with A156.25 (indoor/outdoor) requirements for electrified locking devices.
  • ICC Certifications: Complies with ICC A117.1 Accessible and Usable Buildings and Facilities.
  • UL/cUL Certifications: All locks 3 hour A label single firedoor 4'0" x 10'0"; pair doors 3 hour firedoor 8'0" x 8'0" with 3⁄4" latch option; pair doors 90 minute fire 8'0" x 10'0" with 3⁄4" latch option.
  • CA Fire Code Certifications: All levers with a return to door of 1⁄2" (64 mm) or less comply (Rhodes, Sparta, Tubular, Omega, Longitude, Boardwalk).
  • FL Building Code Certifications: Complies with Florida Building Code (ASTM E330, E1886, E1996) and Miami Dade (TAS 201, 202, 203) requirements for hurricanes.
  • Federal Certifications: Meets FF-H-106C Series 161.
  • Other Certifications: UL294, CSA C22.2 No. 205-M1983, FCC Part 15, IC RSS-210, RoHS.

Testing

  • ANSI Cycles Tested: 3 million cycles (3x ANSI grade requirement).
  • Abusive locked lever torque: Minimum 3,100 inch-pounds without gaining access.
  • Offset lever pull: Mminimum 1,600 foot pounds without gaining access.
  • Vertical lever impact: Minimum 100 impacts without gaining access.
  • Cycle life: Minimum 16 million cycles; 1) with no visible lever sag; 2) without the use of performance aids (i.e. set screws, spacers, etc.).

DOWNLOADS & RESOURCES


Technical resources

Manufacturer Resources

Product Specs

Series:
ND Series
Grade:
Grade 1
Duty Level:
Heavy Duty
Handle Type:
Lever
Keyed Function:
Double Cylinder
Keys Included:
2
Warranty:
10 Year
Standard Latch:
13-247: Deadlatch - 2-3/4" Backset - Square corner, 1-1/8" x 2-1/4"
Standard Strike:
10-025: ANSI, no box, 1-1/4" x 4-7/8" (1-3/16" Lip length)
Subcategory:
Cylindrical Lever Locks
ANSI/BHMA:
F110
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Leversets
Keyed:
Yes
Electronic:
No
Commercial/Residential:
Commercial
Cylinder and Keyways:
S123
Function Description:
Both levers fixed. Entrance by key in either lever.
Lock Type:
Cylindrical
Lock Function:
Classroom Security (180-Degree Lockdown)
Product Attribute:
Cylindrical Locks
IMAP Policy:
Yes
Product Model:
ND78
Collection:
ND-Series
Product Function:
Classroom Security
Door Hand Direction:
Non-Handed
Product Substrate:
Zinc and Steel
Product Category:
Mechanical Locks
Department:
Door Hardware

Schlage ND78PD RHO 626 – Frequently Asked Questions

1) Will the Schlage ND78 fit my existing door prep and 2-3/4 inch backset?
It ships with the 13-247 deadlatch on a 2-3/4 inch backset with a 1-1/8 x 2-1/4 inch square corner faceplate, and the standard door thickness is 1-3/4 inches. ND Series locks all use the common cylindrical ANSI 161 door preparation, so if your opening is already prepped for a cylindrical lever lock at 161 prep, the ND78 drops in.
2) Is the ND78 handed, or do I need to specify left or right?
Non-handed. The ND78 lever lock works on either hand of door with no field reversing, so you order one part number regardless of swing. That matters for a school or campus buying in quantity, since you can stock one configuration.
3) What cylinder options can I order the Schlage ND78 with, and can I use my existing small format cores?
Four cylinder choices: PD conventional 6-pin in the Schlage C keyway, JD Schlage FSIC prep less core, BD less SFIC cylinder, and LD less cylinder. If your facility is already keyed on small format interchangeable cores, order BD and drop your own cores in. If you run Schlage full size IC, order JD. PD locks are supplied keyed different unless you specify keyed alike, and come with two nickel silver cut keys per lock.
4) Is the Schlage ND78 approved for a fire rated classroom door?
The ND Series is UL/cUL listed for 3-hour A label single fire doors up to 4'0" x 10'0", pairs up to 8'0" x 8'0" at 3 hours with the 3/4 inch latch option, and 8'0" x 10'0" pairs at 90 minutes with the same 3/4 inch latch. It's certified under ANSI/BHMA A156.2 Series 4000 Grade 1, meets ADA, complies with ICC A117.1, and meets the Buy American Act, which covers most public school and government specs.
5) I need a Grade 1 classroom lock but my doors are thicker than 1-3/4 inches. Is the ND78 still the right call?
The ND78 is specified at 1-3/4 inch door thickness. For a thicker leaf, look at a Grade 1 cylindrical that publishes a wider range, such as the Falcon K101 in the K Series, listed for 1-3/8 to 2-1/4 inch doors, or the Corbin Russwin CL3100 Series at 1-3/4 to 2 inches. Both are non-keyed passage functions though, so match the function you need within those series rather than swapping function to suit thickness.
6) What is the difference between a classroom security lock like the ND78 and a standard classroom function lock?
A classroom security lock is keyed on both sides so the room can be secured from the inside without stepping into the corridor. The Schlage ND78 has a cylinder in both levers, both levers fixed, and entry by key in either lever. A standard classroom function lock, such as the Dexter C1000 Series classroom cylindrical lever lock or the Cal-Royal AG03 classroom lever, carries a single outside cylinder, so the outside lever is locked and unlocked with a key from the corridor side. If lockdown procedure requires the teacher to stay inside the room, the double-cylinder classroom security arrangement is the one that matches.
7) What is the closest cross-brand equivalent to a Schlage ND78 classroom security lever lock?
The Dexter C1000 Series classroom security cylindrical lever lock is the nearest peer. Both are Grade 1 keyed cylindrical lever locks built for classroom security service, so both give a teacher the ability to lock the outside lever from inside the room. The ND78 is keyed on both sides with both levers fixed and entry by key in either lever, and it is set up for 1-3/4 inch doors with the standard 13-247 deadlatch on a 2-3/4 inch backset. The Dexter C1000 classroom security lock is listed for doors 1-3/8 inch to 1-3/4 inch and uses a clutching lever design. Confirm keyway and door thickness against the opening before swapping one for the other.
8) Is an asylum or institution function lock the same thing as the ND78 classroom security lock?
No. Both are keyed on two sides, but they behave differently. The Schlage ND78 keeps the inside lever always free for immediate egress, with the outside lever locked and unlocked by a 180 degree key rotation in either lever. An asylum or institution function lock, such as the Dexter C1000 Series asylum lock (ANSI F87, listed for doors 1-3/8 inch to 2 inch) or the Arrow MK33-BD-CS asylum lock with ball knob in a Schlage C keyway, keeps both sides key operated with no free egress lever. Choose the asylum function only where a code official permits key operation for egress; classroom doors normally require the free inside lever.
9) If my building is keyed to Schlage C, which other cylindrical locks will take the same key?
The Schlage ND78 is offered with a conventional 6-pin cylinder in the Schlage C keyway, and it is also offered less cylinder or prepped for SFIC and Schlage FSIC cores if you pin your own. Among other brands, the Cal-Royal AG00 entrance lever and AG03 classroom lever both use a 6-pin Schlage C keyway keyed different, and the Arrow MK33-BD-CS asylum lock uses a conventional cylinder in the Schlage C keyway. The Accentra 107S is a Schlage cylinder adapter kit for Yale hardware if you need to bring Yale trim onto the same key system.
10) Does the strike that comes with the ND78 match a standard ANSI frame cutout?
The standard strike is the 10-025, an ANSI strike measuring 1-1/4 x 4-7/8 inches with a 1-3/16 inch lip length and no dust box. That's the T-strike cutout found on most hollow metal commercial frames. If your frame is prepped for a smaller round-corner residential strike, the frame will need to be modified or a different strike specified.
11) Can I get a batch of ND78 locks keyed alike for one building?
Yes. Keying is selected at order: KD keyed different is the default, KA keyed alike groups multiple locks to one key, or select the no-cylinder option if you're keying them yourself. There's also a free-text field for special cylinder and keying requirements, which is where a master key system or a restricted keyway request goes.
12) Which ND78 lever styles meet the California fire code return-to-door requirement?
Levers with a return to door of 1/2 inch or less comply: Rhodes, Sparta, Tubular, Omega, Longitude, and Boardwalk. All nine lever designs offered are Athens, Boardwalk, Broadway, Latitude, Longitude, Omega, Rhodes, Sparta, and Tubular, so if you're specifying into a California project, stay on the six listed above.
13) What finishes does the Schlage ND78 come in, and is there an antimicrobial option for a healthcare or school corridor?
Ten finishes: 605 bright brass, 606 satin brass, 612 satin bronze, 613 oil rubbed bronze, 619 satin nickel, 622 matte black, 625 bright chrome, 626 satin chrome, 626AM satin chrome antimicrobial, and 643E aged bronze. The 626AM is the antimicrobial version of the standard satin chrome, so it matches 626 hardware visually on adjacent openings.
14) How does the ND78 compare to a Dexter C1000 classroom security lock?
Both are Grade 1 cylindrical classroom security locks. The Dexter C1000 Classroom Security lever is listed for doors 1-3/8 to 1-3/4 inches and uses a clutching lever, while the ND78 is built around a 1-3/4 inch door with the 2-3/4 inch backset 13-247 deadlatch and is tested well past the Grade 1 minimums, including 3,100 in-lb of abusive lever torque and 16 million cycles. Choose the ND78 where you need to match an existing Schlage keyway and ND or Von Duprin hardware across the building.
15) Can I standardize the ND78 with other hardware already in my building?
The ND Series shares the common cylindrical ANSI 161 prep across mechanical, electrified, electronic NDE wireless, and ligature-resistant trim models, so you can swap functions on the same door prep later without re-machining. Schlage also states the ND Series suites with Von Duprin exit devices and other Schlage products, and is design-matched to the Schlage ALX Series Grade 2 locks for lower traffic openings in the same building.
16) Is there a Grade 2 classroom lever lock I can use instead of the Schlage ND78?
The Cal-Royal AG03 classroom lever is a Grade 2 classroom function lock with a 6-pin Schlage C keyway keyed different and a 2-3/4 inch backset, which matches the 2-3/4 inch backset the ND78 latch uses. The tradeoff is function and grade: the ND78 is a Grade 1 classroom security lock with a cylinder in both levers, while the AG03 is a classroom function lock. For a corridor door where inside-the-room lockdown is not part of the procedure, the AG03 covers the classroom keying; for rooms held to a lockdown standard, the double-cylinder ND78 is the function called out.
17) For a storeroom or utility door, do I need the ND78 or something simpler?
A storeroom door does not need the two-sided key control of the ND78, which is a classroom security function with a cylinder in both levers. A storeroom function lock keeps the outside lever locked at all times with key entry from one side. The Cal-Royal AG05 is a Grade 2 storeroom lever lockset with a deadlocking latchbolt, and the Hager 2580 with Withnell lever is a Grade 2 storeroom cylindrical lock listed for doors 1-3/8 inch to 2 inch. Use the ND78 where lockdown from inside the room is required and a storeroom function where the door simply stays locked.
18) What should I use on the doors in a school that do not need keyed classroom security?
Pair the keyed classroom doors with a non-keyed Grade 1 passage lock on closets, corridors and similar openings so the duty level stays consistent. The Falcon K101 is a Grade 1 heavy duty passage cylindrical lock with non-handed levers, fire rated and listed for doors 1-3/8 inch to 2-1/4 inch. The Corbin Russwin CL3110 is a Grade 1 vandal resistant passage lever lock for doors 1-3/4 inch to 2 inch, also fire rated, and the Dexter C1000 passage lock is a Grade 1 clutching non-keyed lever for 1-3/8 inch to 1-3/4 inch doors. The Schlage ND78 stays on the openings that need the two-sided cylinder and 180 degree lockdown.
19) Can I use a residential or Grade 3 lever in place of the Schlage ND78 on a school door?
No. The ND78 is a commercial Grade 1 heavy duty cylindrical lever lock in zinc and steel with a classroom security function. Levers such as the Kwikset 200BRNL Breton passage set and the Callan Artino entrance leverset are Grade 3 and non-keyed or single-cylinder entrance function, so they neither carry the duty rating nor provide the two-sided key control that a lockdown door requires. They suit light interior and residential openings, not a keyed classroom security application.
20) My opening is thicker or thinner than 1-3/4 inch. Is the ND78 still the right lock?
The Schlage ND78 is furnished for 1-3/4 inch doors, and locks ordered with indicator trim fit 1-3/4 inch doors with separate spacer kits available for 1-3/8 inch to 1-11/16 inch. If the door falls outside that and you want a lock that lists the range up front, the Dexter C1000 asylum lock is a Grade 1 cylindrical lock listed for 1-3/8 inch to 2 inch and the Falcon K101 Grade 1 passage lock is listed for 1-3/8 inch to 2-1/4 inch. Note that those are different functions, so match the function to the opening first and the thickness second.
21) Do I need an electrified lever instead of the ND78 if the door ties into access control?
Yes, if the opening has to be released or secured from a remote signal. The Schlage ND78 is a mechanical lock with no electronic operation, worked entirely by key. For a powered opening, the Corbin Russwin CL33903 is a Grade 1 fail safe electrified cylindrical lever lock operating on 12V AC/DC for doors 1-3/4 inch to 2 inch. Keep the ND78 on doors where lockdown is by key at the door and use the electrified lever where the lock is wired to a credential reader or panel.
22) Is a keypad lever a substitute for the ND78 on a classroom door?
Not for lockdown duty. The Schlage ND78 is a Grade 1 mechanical classroom security lock keyed on both sides, with the inside lever always free for egress. A mechanical or electronic keypad lever such as the Lockey 1150 heavy duty mechanical keypad lever set, listed for doors 1-1/8 inch to 2 inch, or the Delaney LP250 Grade 2 electronic keypad leverlock, grants access by code rather than by key and is not a classroom security function. Keypads fit storage, office and staff-only doors; the classroom door that has to be secured by key from inside the room takes the ND78.
23) What is the ND78 lock body made of, and will it hold up to school corridor traffic?
Zinc and steel construction, rated heavy duty and commercial. Schlage tests the ND chassis to 3,100 in-lb of abusive lever torque, 1,600 lbs of offset lever pull for pry bar resistance, and 100 vertical lever impacts without gaining access, with five points of engagement holding near zero lever droop after 16 million cycles and no set screws or O-rings. That is the durability argument for a high-traffic education or institutional opening.
24) Is the ND78 an electronic or access control lock?
No, the ND78 is a purely mechanical keyed cylindrical lever lock. If you need an electrified or wireless credential-based opening, that is a different model within the ND family, not this one. For a standalone keypad alternative, ZenSupply carries the Delaney LP250 electronic keypad leverlock and the Lockey 1150 mechanical keypad lever set.
25) I need a lever on the door for looks only next to my ND78 openings. What do I order?
A dummy trim, not a lockset. The Schlage ND78 is a keyed classroom security lock with a working deadlatch and a cylinder in both levers, so it is the wrong part for a fixed pull. The BEST 9K Series 1DT is a Grade 1 heavy duty non-keyed single dummy trim cylindrical lever, and the BEST 7KC Series single dummy trim is a Grade 2 medium duty version. Both mount as trim with no latch, which is what an inactive leaf or closet face needs.
How fast can I get the Schlage ND78PD RHO 626 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 Schlage ND78PD RHO 626 come with a warranty?
Absolutely. The Schlage ND78PD RHO 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 Schlage ND78PD RHO 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
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