Dormakaba Simplex 1021 B03 Mechanical Push Button Knob Lock with Key Override Best Prep Bright Brass

Part Nr: 1021B05



Less Small Format Interchangeable Core





1-3/8 to 2-1/4 Inches

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Product Summary

Simplex Mechanical Pushbutton Locks eliminate problems and costs associated with issuing, controlling, and collecting keys and cards.


The Simplex 1000 Series provides exterior access by combination, while allowing free egress. This mechanical lock, with knob option, elimates the material and labor expense of battery replacements, has a single access-code and is programmed via the keypad without removing the lock from the door.


  • Construction: Heavy-duty cylindrical lock housing with cast front housing, unified trim plate, and fixed ADA-compliant levers
  • Door Preparation: Easily installs on wood or metal doors. ASA 161 door preparation with additional through holes.
  • Door Thickness: 1-3/8" (35 mm) to 2-1/4" (57 mm)—Pre-assembled to accommodate 1-5/8" (41 mm) to 2" (51 mm) doors
  • Numeric Keypad: Vandal resistant, solid metal pushbuttons
  • Handing: Reversible
  • Backset: 2-3/4" (70 mm), 2-3/8" (60 mm)
  • Latch: 1/2" (13 mm) throw latch, 3/4" (19 mm) throw latch (optional)
  • Minimum Stile Recommended: 5" (127 mm)
  • Strike: Standard strike plate; ASA strike plate
  • Durability: D.O.D. Compliant 5220.22M for supplemental access control; weather resistant
  • Fire Rating: 3-hour UL/ULC fire rating for "A" labeled doors
  • Warranty: 3-year warranty

Product Identifiers

00036448800544 ,1021 B05

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Dormakaba Simplex 1021B Mechanical Push Button Knob Lock with Key Override Best Prep
Dormakaba Simplex 1021B Mechanical Push Button Knob Lock with Key Override Best Prep
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