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The Schlage ND70 is the classroom lock function (ANSI F84) of the ND Series, Schlage heavy duty Grade 1 cylindrical lock. A key cylinder in the outside lever locks and unlocks that lever, a plain lever sits inside, and the latch is a deadlatch. In the unlocked state either lever retracts the latch, and the inside lever is always free for immediate egress.
It is the traditional classroom function: staff secure the room from the corridor with a key, and the door still opens freely from inside at all times. Nobody in the room can change the locked state, which keeps control with the keyholder.
Schlage names this function exterior lockdown only, and the name is the spec. Locking the door means stepping into the corridor and turning the key - it cannot be locked from inside the room. If your lockdown policy requires securing the door without opening it, the function you want is the ND78 classroom security lock (ANSI F110), which locks from inside. Ask us and we will quote it instead.
It takes conventional, FSIC, or SFIC cylinder formats and defaults to the patented Everest 29 S123 keyway. The ND Series margin over the standard carries through: 3,100 in-lb of abusive lever torque (2.6x BHMA), 1,600 lbs of offset lever pull (8x BHMA), and near zero droop and wobble after 16 million cycles (16x BHMA) - which is what a classroom door actually needs after a few thousand students have swung on the lever.
Features
- Classroom lock function - key cylinder outside, plain lever inside, deadlatch.
- Outside lever is locked or unlocked by key outside.
- Exterior lockdown only - the door is locked from the corridor side, not from inside the room.
- Inside lever always free for immediate egress.
- In the unlocked state the latch is retracted by either lever.
- Occupants cannot change the locked state, keeping control with the keyholder.
- Conventional, FSIC, and SFIC cylinder formats, plus less-cylinder options for existing key systems.
- Patented Everest 29 S123 keyway standard on conventional and FSIC cylinders.
- Keyed different, keyed alike, master keyed, or construction keyed.
- ANSI/BHMA Grade 1 certified to A156.2-2011, Series 4000.
- Resists 3,100 in-lb of abusive lever torque, 2.6 times the BHMA requirement.
- Restricts entry against 1,600 lbs of offset lever pull, 8 times BHMA.
- Near zero droop and wobble after 16 million cycles, 16 times BHMA, with no set screws or O-rings.
- Nine ADA compliant lever designs and nine finishes; inside lever can differ from outside.
- Non-handed; UL Listed 3 hour fire rated and BAA compliant.
Specifications
Function
- Schlage Function
- ND70 classroom lock, exterior lockdown only
- ANSI Function
- F84
- Trim
- Lever with key cylinder outside; lever inside; deadlatch
- Unlocked State
- Latch retracted by either lever
- Locking and Unlocking
- Outside lever is locked or unlocked by key outside
- Lockdown
- Exterior only. The door cannot be locked from inside the room. For lockdown from inside, see the ND78 classroom security lock, ANSI F110
- Egress
- Inside lever always free for immediate egress
- Cylinders Required
- One, outside
Cylinders and Keying
- P6
- Conventional 6-pin cylinder, Everest 29 S123 keyway
- P
- Conventional 6-pin cylinder keyed 5-pin, Classic C keyway
- L
- Less conventional cylinder, for supplying your own
- R
- FSIC 6-pin full size interchangeable core
- J
- Less FSIC core, for an existing full size interchangeable core system
- H
- Refundable construction SFIC core
- B
- Less SFIC core, for an existing small format interchangeable core system
- Keying
- Keyed different (standard), keyed alike, master keyed, or construction keyed
- Default Keyway
- Everest 29 S123 on conventional and FSIC cylinders. Master keyed systems default to Everest 29 S145
- Pack Cylinders Loose
- PCL available if cylinders should ship uninstalled
Performance
- Abusive Lever Torque
- 3,100 in-lb, equivalent to over 690 lbs at the end of a 4-1/2 inch lever (2.6x BHMA)
- Offset Lever Pull
- 1,600 lbs (8x BHMA)
- Vertical Impact
- 100 impacts with no failure or indication of stress (20x BHMA)
- Cycle Life
- Near zero droop and wobble after 16 million cycles (16x BHMA)
- Latch Preload
- Latch retraction with 200 lb preload (4x BHMA)
Chassis and Trim
- Chassis Material
- Modular design of zinc and steel components, plated for corrosion protection
- Handing
- Non-handed
- Door Thickness
- Standard 1-5/8 to 2-1/8 inches. Optional 1-3/8 inches to 6 inches in EE, EO, EI, and ED configurations
- Backset
- Standard 2-3/4 inches, with 3-3/4 inch latches available and a 5 inch backset extension
- Lever Designs
- Athens (ATH), Boardwalk (BRK), Broadway (BRW), Latitude (LAT), Longitude (LON), Omega (OME), Rhodes (RHO), Sparta (SPA), Tubular (TLR), in pressure cast zinc plated to match the finish. The inside lever can be specified the same as outside or as a different design
- Roses
- Wrought brass or zinc, plated to match the finish. Rose diameter 3-7/16 inches
- Finishes
- 605 bright brass (US3), 606 satin brass (US4), 612 satin bronze (US10), 613 oil rubbed bronze (US10B), 619 satin nickel (US15), 622 matte black (US19), 625 bright chrome (US26), 626 satin chrome (US26D), 643e aged bronze
Latch Options
- 13-247
- Deadlatch, 2-3/4 inch backset, 1-1/8 x 2-1/4 inch square corner faceplate (standard)
- 13-248
- Spring latch, 2-3/4 inch backset
- 14-028
- Deadlatch, 3-3/4 inch backset, 1-1/8 x 2-1/4 inch square corner
- 14-010
- Spring latch, 3-3/4 inch backset, 1-1/8 x 2-1/4 inch square corner, non-restoring
- 14-042
- Anti-friction fire deadlatch, 3/4 inch throw, 2-3/4 inch backset, for pairs of doors
- 43-005
- 5 inch backset extension
Strike Options
- 10-025
- ANSI strike, 1-1/4 x 4-7/8 inches, 1-3/16 inch lip (standard). Also available with the K510-066 dust box, or with a 1-3/8 or 1-1/2 inch lip
- XQ07-351
- 10-025 strike with a 7/8 inch flat lip, or special lip lengths through 6 inches
- 10-013
- T-strike with dust box, 1-1/8 x 2-3/4 inches, with a 1-1/8 or 1-1/2 inch lip
- 10-016
- T-strike with deep dust box for the 3/4 inch fire latch, 1-1/8 x 2-3/4 inches
Certifications
- ANSI/BHMA
- A156.2-2011, Series 4000 Grade 1 cylindrical locks
- Accessibility
- Complies with ICC A117.1 Accessible and Usable Buildings and Facilities
- Fire
- UL 10C and CAN/ULC-S104. Three hour A label single fire door 4 ft by 10 ft. Pairs of doors three hour at 8 ft by 8 ft with the 3/4 inch latch option; pairs 90 minute at 8 ft by 10 ft with the 3/4 inch latch option
- California Fire Code
- Levers with a return to door of 1/2 inch or less comply: Rhodes, Sparta, Tubular, Omega, Longitude, and Boardwalk
- Florida Building Code
- Complies with Florida Building Code (ASTM E330, E1886, E1996) and Miami Dade (TAS 201, 202, 203) hurricane requirements
- Federal
- Meets FF-H-106C Series 161. BAA compliant on all functions
- Warranty
- 10 year mechanical and 3 year electro-mechanical
Frequently Asked Questions
- What does ND70 mean?
- It is the Schlage function code for the classroom lock, ANSI F84. The outside lever is locked and unlocked by key from outside.
- Can I lock the room from inside?
- No. Schlage classifies the ND70 as exterior lockdown only, which means someone has to step into the corridor and turn the key to lock the door. If your lockdown procedure requires locking without opening the door, specify the ND78 classroom security lock (ANSI F110) instead, which locks from inside.
- Can people always get out?
- Yes. The inside lever is always free for immediate egress, locked or not. Locking only stops entry from the corridor.
- Can students change the locked state?
- No. There is no button or turn on the inside lever, so the locked state can only be changed with the key from outside.
- How is this different from the ND73 corridor lock?
- The inside control. The ND73 adds a push button on the inside lever, giving a second way to lock. The ND70 is key only from outside, which is simpler and leaves nothing for occupants to operate.
- Which cylinder option do I pick?
- Match your existing key system. P6 is conventional on the patented Everest 29 S123 keyway, the Schlage default. P is conventional on the open Classic C keyway. Pick R for a 6-pin FSIC core, H for a refundable construction SFIC core, or L, J, or B to receive the lock less cylinder or less core.
- Can a whole school be keyed on one system?
- Yes. Choose master keyed to fold the locks into an existing system, or keyed alike for a group that should open on one key. Send us your keyway and bitting or a sample key. Construction keying is also available for a build in progress.
- Which latch do I need?
- The standard 13-247 deadlatch on a 2-3/4 inch backset covers most doors. Use a 3-3/4 inch latch for deeper stiles, and the 14-042 anti-friction fire deadlatch with its 3/4 inch throw on pairs of doors, which is also what the pair-door fire listings require.
- Does the lever choice matter for code?
- It can. For the California Fire Code, levers with a return to door of 1/2 inch or less comply, which covers Rhodes, Sparta, Tubular, Omega, Longitude, and Boardwalk. Confirm the lever design against your local requirements.
