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ND Series Grade 1 Cylindrical Lock

Schlage's strongest, best-selling cylindrical lock, ND offers 24 mechanical functions in 9 lever designs with an expansive list of key system options.


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Beyond grade 1 performance is the hallmark of the mechanical and electrified ND Series locks. The locks are put through extreme levels of testing and are proven 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 where grade 1 strength and security are desired.

 Heavy Duty

 Monitoring Options

 Primus upgradeable

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Mechanical Locks

For frequently asked questions, educational resources and technical product materials visit the Mechanical Locks 101 page. 


  • Exceeds ANSI/BHMA Grade 1 operational and security standards
  • UL listed for 3-hour fire door                                        
  • Vandlgard® option allows the outside lever to rotate freely up or down to prevent damage from excessive force while in a locked state
  • Lead lining for use in X-ray or other rooms with radiation concerns
  • Patented Everest 29™ S123 keyway is provided standard which prohibits unauthorized key duplication 
  • Restricted geographically exclusive Primus upgraded security options offer advanced key control and exceptional physical security




Built to Last  

  • Schlage's most robust Grade 1 cylindrical lock
  • Every Schlage lock undergoes intensive testing to determine its ANSI grade level including: cycle, resistance, door impact, warped door and bolt strength tests 

Functions with 180-degree visibility indicator trim options are marked (*). See ND Series Grade 1 Cylindrical Indication Trim for details. 

Non-keyed functions

  • ND10 Passage latch (ANSI F75)
  • ND12 Exit lock (ANSI F89)
  • ND25 Exit lock with exterior blank plate 
  • ND30 Patio lock (ANSI F77)
  • ND40 Bath/bedroom privacy lock (ANSI F76) (*)
  • ND44 Hospital privacy lock (*)
  • ND45 Time out lock with Vandlgard®


Non-keyed dummy functions

  • ND170 Single dummy trim
  • ND172 Double dummy trim


Keyed functions

Single cylinder

  • ND25 x 70 Classroom exit lock
  • ND25 x 80 Storeroom exit lock
  • ND50 Entrance/office lock (ANSI F82) (*) with Vandlgard® ND91 (*)
  • ND53 Entrance lock (ANSI F109) (*) with Vandlgard® ND92 (*)
  • ND60 with XN12-001 Vestibule with interior unlocking only
  • ND70 Classroom lock, exterior lockdown only  (ANSI F84) with Vandlgard® ND94
  • ND73 Corridor lock (ANSI F90) with Vandlgard® ND97
  • ND80 Storeroom lock (ANSI F86) with Vandlgard® ND96
  • ND81 Accessible storeroom lock (ANSI F86)
  • ND85 Faculty restroom lock (ANSI F93)

Double cylinder

  • ND60 Vestibule lock (ANSI F88) with Vandlgard® ND93
  • ND66 Store lock (ANSI F91)
  • ND70 x 80 Classroom by storeroom lock
  • ND72 with XN12-002 Communicating lock (ANSI F80) with Vandlgard® ND72 with XN12-003 
  • ND78 Classroom security lock , 180-degree lockdown (ANSI F110) (*) with Vandlgard® ND98 (*)
  • ND82 Institution lock (ANSI F87)


Electrified functions (see ND Series electrified cylindrical lock for details)

  • ND12EL/EU Exit lock, electrically locked/unlocked  
  • ND80EL/EU Storeroom lock, electrically locked/unlocked with Vandlgard® ND96EL/EU


  • Chassis: Zinc and steel components zinc dichromate plated for corrosion resistance
  • Door thickness: 1-5/8" to 2-1/8" (41 mm to 54 mm) standard; 1-3/8" up to 6" (35 mm up to  152 mm) optional - specify door thickness and position in door (EE, EI, EO, ED) 
  • Non-handed


Trim Options

  • Nine lever designs made of pressure cast zinc, plated to match product finish specification
  • See HSLR ligature-resistant cylindrical for other trim options
  • Milled tactile warning available on all lever designs except Omega
  • Roses: wrought brass, plated to match product finish specification   
  • Available chassis lead lining option for use in X-ray or other rooms with radiation concern  



  • Backset: 2-3/4" (70 mm) standard; 2-3/8", 3-3/4", and 5" optional
  • Latchbolt: 1/2" (13 mm) throw oil impregnated stainless steel standard; 3/4" throw, 2-3/4" backset anti-friction bolt for pair doors optional
  • Faceplate: square corner 1-1⁄8" x 2-1/4" (29 mm x 57 mm) standard; square corner 1" x 2-1/4" (25 mm x 57 mm) for 2-3/8" backset doors
  • Strike: ANSI curved lip strike 1-1⁄4" x 4-7⁄8" (32 mm x 124 mm) standard; T-strike with box and T-strike with deep box for fire door latch optional
  • Strike lip length: 1-3⁄16" (30 mm) standard; extended lip strikes - 1-3⁄8" and 1-1/2" optional 


  • ANSI A156.2-2017 Series 4000, Grade 1 



  • Complies with ICC A117.1-2017 Accessible and Usable Buildings and Facilities



  • UL 10C and CAN/ULC-S104 listed  
    • 3-hour fire doors: A label single doors 4' x 10' and pair doors 8' x 8' with 3/4" latch option
    • 90-minute fire doors: 8' x 10' pair doors with 3/4" latch option
    • Letter F and UL symbol on latch front indicate listing
  • UL 437 listed when using Primus high-security UL 437 cylinder


California Fire Code

  • All levers with a return to door of 1/2" (13 mm) or less comply (Rhodes, Sparta, Tubular, Omega, Longitude, and Boardwalk)



  • Florida Building Commision (ASTM E330, E1886, E1996)
  • Miami Dade (TAS 201, 202, 203) requirements for hurricanes
  • TDI (ASTM E330, E1886, E1996)



  • Meets FF-H-106C Series 161



  • Meets BAA (Buy American Act)

ND Series lock finishes

605 Bright brass

605 Bright brass


606 Satin brass


612 Satin bronze


613 Oil rubbed bronze


619 Satin nickle


622 Matte black


625 Bright chrome


626 Satin chrome


626AM Satin chrome with antimicrobial coating


643e Aged bronze (simulated equivalent)

Key cylinder, plug and core face finishes


606 Satin brass


522 Bronze (simulated equivalent)


622 Matte black


626 Satin chrome

Open keyways upgradeable to Primus RP


Patented keyways upgradeable to Primus XP

  • Everest 29™ S keyways include S123 (default keyway)
  • Everest 29™ T restricted keyways 
  • Everest 29™ R restricted keyways as SL cylinders in conventional or FSIC formats with the same A2 pinning style of SFIC cylinders
  • Everest 29™ keyways gain restricted, geographic exclusivity in a Primus XP cylinder
  • Available in Conventional and FSIC cylinder formats


Small Format Interchangeable Cores (SFIC)

  • Everest 29™ R restricted keyway family


Master Keying

  • Factory master keying available


Non-Schlage options

Available levers made to fit LFIC cylinders from: 

  • Medeco 32 (ATH, SPA, RHO and TLR only) 
  • Corbin Russwin 6-pin (ATH, SPA, RHO and TLR only) 
  • Corbin Russwin 7-pin (RHO only)
  • Sargent (ATH, SPA, RHO and TLR only) 
  • Yale 6-pin and Medeco 31 (ATH, SPA, RHO and TLR only) 
  • Yale 7-pin (RHO only) 

Available levers made to fit Conventional cylinders from: 

  • Corbin Russwin (ATH, SPA, RHO and TLR only) 
  • Sargent (ATH, SPA, RHO and TLR only) 

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Additional Resources

Did You Know?

Carrying on the legacy of the groundbreaking push-button lock, Schlage changed the game again with its descendent in 2019—the ALX Series. This series features a patent-pending chassis and revolutionary new modular design.

Case Study

San Mateo High School District keys in on security

San Mateo, CA

At the San Mateo Union High School District, a combination of relatively simple but effective access control solutions protects students, teachers and staff with minimal system management requirements.

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