Simplex 5021

Extra Heavy-Duty Combination Door Lock


Keep it simple. The Simplex 5021 hits the top of the charts for security and reliability with easy keyless access. This heavy duty and fully mechanical keyless lock reduces the costs and problems associated with electronic maintenance, managing keys, and labor.

SKU: 5021
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Need assistance or have questions? Call our Cabinet Product Specialists at 877-439-5377 for more information and ordering assistance. We’re here to help!

Need assistance or have questions? Call our Commercial Product Specialists at 877-439-5377 for more information and ordering assistance. We’re here to help!

  • ADA compliant lock
  • 100% mechanical push-button lock
  • 6 decorative finishes.  Bright brass and satin brass are PVD finishes.  The black finish features satin chrome levers and accents.  The dark bronze PVD finish is a simulated 10B/613 finish and features brass accents.  Premium finish (bright chrome) may result in a small delivery lead time – please call (877) 439-5377 to verify
  • Thousands of possible codes combinations
  • Change code with change tool (provided) from exterior side on 5021 and 5041 models, interior side on 5031 and 5051 model to meet Dept. of Defense standards
  • Auto-locking; available for order with passage mode feature in 5041 model
  • Covers existing standard ASA 161 door hole
  • Kaba 5000 Extra heavy duty latchbolt with deadlocking plunger
  • Fits left and right swinging doors
  • All hardware and instructions included
  • Backset:  2 3/4″ included (2 3/8″ available at checkout)  How do I measure?
  • Low maintenance, no batteries or wires
  • Fits nearly all hinged doors
  • Key override – lock comes furnished with a 6 pin conventional Schlage cylinder with Schlage C keyway for emergency access

GoKeyless™ is a factory trained and authorized Kaba 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. Simplex 5021XSWL - Combination Entry (change codes from exterior) & Key Override Industrial strength combination lock from the leader in top of the line security solutions, Kaba Ilco.  Kaba has been making high quality security products for over 100 years.  For a security lock, the highly weather resistant Simplex 5000 Series earns a Grade 1 rating from ANSI. (American National Standards Institute)  This marks the highest rating they give out for quality.  Your Simplex 5000 grants entry upon successful validation of a 1 to 5 digit sequential code which you pre-program into the lock.  Vandal protected, the Simplex series of PIN based locks find widespread acceptance in high-traffic commercial, institutional, and government buildings. Don’t need heavy duty? Order Simplex LD470 light duty and take advantage of limited time, special, low pricing.
- Upgrade opportunity:  Want to assign each user their own code?  Want to track entries?  Check out Kaba E-Plex E5031
Exterior Dimensions

8 7/8 (H) x 3 3/8 (W) x 3 3/16 (D) in.

Inside Dimensions

8 7/8 (H) x 3 3/16 (W) x 2 1/8 (D) in.

Door Thickness Minimum

1 3/8 in.

Door Thickness Maximum

2 1/4 in.

Door Handing


Door Stile Width

Minimum 5 in.

Door Prep

Standard 2 1/8 in. Cross-Bore, Edge Bore: 1 in., Through-Bolt Hole(s)

ANSI Rating

A156.2, Grade 1 (Best)

BHMA Rating

Grade 1 (Best)



Code Length

1 to 5 Digits

Code Capacity



2 3/4 in.


Extra heavy-duty solid cast housings, Solid cast, ADA-compliant levers




Kaba Simplex

Handle Type

Lever Handle Door Locks

Door Opening


Lock Features

Auto Relocking

Locking Device

Cylindrical Latch

Access Type

Key, Keypad – Digits


Schlage C

Fire Rating

3-hour UL/ULC fire rating for A labeled doors


9.25 lbs


3 Year Manufacturer


Single Factor

Share your thoughts!

4.69 out of 5 stars

29 reviews

Let us know what you think...

One review with a 1-star rating

  1. Poor life


    I now have about ten years of experience with this product, in an apartment building that has two gated entrances with this lock. Over the ten years I have replaced 4 locks. Something inside breaks that causes the lever to go slack and not open after you put in the combination. They last about 2 years in my experience (32 units in apt building; I’d cal that medium traffic load).

    The first time it happened I thought it must be old because we had just bought the building and I had no way to know how old it was. Ditto the second one. But after that I knew the history. I have to keep using them because the gates have been cut to an exact profile of this lock, but I’m not happy at all.

    I have not found anyone local who repairs these. I opened it up once but the mechanism is pretty complicated and not worth my time to figure out, and who knows how I’d get parts anyway.

    (0) (0)

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Customer Questions & Answers

  1. Q Does it have a latch for the opposite side of the door? answer now
    Asked by Deana Orlandini on April 10, 2024 3:07 PM
    Answered by the admin

    The Simplex 5021 handing is field reversible and can work on either side of the door. 

  2. Q Does this lock require extra holes to install? answer now
    Asked by Jeff on December 14, 2023 5:28 PM
    Answered by the admin

    This will depend on what preparation has already been performed on the door or what lock has been installed previously, if any. Please refer to the template for this lock and compare the specs for what your door already has.

  3. Q Can you order more than two keys? answer now
    Asked by Matt on September 9, 2023 9:14 PM
    Answered by the admin

    If you would like more than two keys, we can make extra copies for you when you add our Key Copy Service to your order!

  4. A

    After putting in a valid code this lock will remain unlocked until the handle is turned, then it will relock.

  5. Q The lock opens when you press enter. What is the problem? answer now
    Asked by Al on September 28, 2022 7:33 PM
    Answered by the admin

    This is typically an indication that someone attempted to change the combination but missed a step during the process causing the combination chamber to be cleared. To resolve this issue, the combination chamber will need to be manually reset using the steps below. 

    Simplex 5000 Lost Code

  6. A

    The key override is just to unlock the door should there be an emergency or if the code isn't working. It does not lock it back. 

  7. Q Is the handle on this lock reversible? answer now
    Asked by jinaki on January 12, 2021 9:46 AM
    Answered by the admin

    The handle on this model is field reversible and does not need to be ordered for a specific door orientation. 

  8. Q Is this weatherproof for an outdoors gate? answer now
    Asked by Ana on October 9, 2020 12:35 PM
    Answered by the admin

    This model is fully weatherproof and is perfect for outdoor applications!

  9. Q Being mechanical, does it work without batteries? answer now
    Asked by Kent Johnson on September 30, 2020 1:58 PM
    Answered by the admin

    Yes! This lock requires no power to function and does not use any sort of battery or hardwired power source. 

  10. Q How to change the code? answer now
    Asked by Kevin on September 17, 2020 1:28 PM
    Answered by the admin

    Please feel free to check out our guide on changing the code on the Simplex 5000 series here:

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