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  • dormakaba Simplex 1021

    Pushbutton Lock - Less IC Core

    SKU: 1021B26D41

    Simplex and dormakaba

    Security made simple. The dormakaba Simplex 1021 is a heavy-duty push-button lock built to withstand high traffic and tough environments. No electronics, wires, or batteries to worry about. Features auto-locking to ensure your door or gate is always locked behind you when it closes. Prepped for removable interchangeable key cores.

    Key Override

    In Stock



    3 Years of SHIELD Coverage

    Product Replacement | Extended Return Policy | Price Protection

    Terms and Conditions


    • 100% Mechanical HEAVY DUTY push button lock
    • Thousands of possible codes combinations
    • Auto-locking; can be ordered with passage mode feature in Simplex 1041 model
    • HEAVY DUTY Latchbolt with deadlocking plunger
    • Covers existing standard ASA 161 door hole
    • Fits left and right swinging doors
    • All hardware and instructions included with order
    • Low maintenance, no batteries or wires
    • Fits nearly all hinged doors
    • Backset: 2 3/4" included (2 3/8" available at checkout) How do I measure?
    • Prepped for key override. When you choose Best IC - Prep you may use your own small-format IC cores in this lock, including Best, Falcon, KSP, and Arrow. When you choose one of the other name brand IC preps, you can then use that name brand IC core in the lock. Need us to supply the core? Simply order at checkout
    • 3-year manufacturer warranty

    Simplex 1021 - Combination Entry & Prepped for Key Override (Use your own IC/Removable core, or order one from us at checkout) Tough-as-nails combination lock from the leader in top of the line security solutions, dormakaba. dormakaba has been making high quality security products for over 100 years.  The Simplex 1000 Series is a heavy-duty stand-alone security lock that is highly weather resistant.  Entry is gained via a 1 to 5 digit code that is sequential.  Vandal resistant, the Simplex locks have found widespread acceptance in high-traffic commercial, institutional, and government buildings.

    Need this lock with a lever handle instead?  Click here

    GoKeyless™ is a factory trained and authorized dormakaba Simplex® dealer. Sales, service, support, valid warranties. It's why thousands of clients around the world choose GoKeyless™ for their security and access control needs each year.


    Manufacturer dormakaba USA Inc.
    Lock Features Old Auto Relocking
    Solution Mechanical
    Warranty 3 Year Manufacturer
    Handle Type Knob
    Access Type Key
    Keypad - Digits
    Locking Device Cylindrical Latch
    Brand Simplex

    Door requirements

    Door Handing Non-Handed
    Door Prep Standard 2 1/8 in. Cross-Bore, Edge Bore: 1 in., Through-Bolt Hole(s)


    Code Length 1 to 5 Digits
    Code Capacity 1
    Fire Rating 3-hour UL/ULC fire rating for A labeled doors


    Exterior Dimensions 7 3/8 (H) x 3 1/8 (W) x 3 3/16 (D) in.
    Inside Dimensions ["9 (H) x 3 1/4 (W) in."]
    Door Thickness Minimum 1 3/8 in.
    Door Thickness Maximum 2 1/4 in.
    Backset 2 3/4 in.
    Door Stile Width Minimum 4 in.
    Exterior Dimensions 7 3/8 (H) x 3 1/8 (W) x 3 3/16 (D) in.
    Weight 7.25 lbs