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
Your Current Selections:
Your Current Selections:

For more information or ordering assistance, please call our Commercial Project Specialists at 877-439-5377 ext 9003

  • 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

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4.69 out of 5 stars

29 reviews

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What others are saying

  1. Paul from Michigan

    We have been using the Simplex 5021 model keypad in our food processing operation for more nearly two years now. With my previous brand’ a Codelocks 500′ I was replacing part of the lockset about every six months in my high-traffic area. I have not needed to repair or replace my first 5021in that same area in 22 months. I’ve outfitted my plant with 5021s throughout. No regrets.

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  2. Sean from Indiana shipped fast products are as advertised will defintely oprder for all my keyless needs from now on.

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  3. Logan and Gold~s Gym

    The lock we purchased is working great. It is much easier to use and change the code on than the on the one we replaced. Thank you for all the help.

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  4. Sean from Indiana

    The Kaba Simplex 5021mechanical keyless lock is a perfect for applications that get a lot of use. We install these on apartment buildings’ climate controlled storage units and offices with security zones. I have been using these locks for years without any issues that are common with mechanical locks that get heavy use. Also a key feature is that it is left and right field configurable as opposed to many other mechanical locks. Very heavy duty locks and has them at a great price.

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  5. Pat from North Carolina

    The simplex 5021 is a great product. I install a lot of pool fences and this has been a great way for my clients to have keyless entry for their community pools. Thank you for suppling a great product’ service’ and fast shipments.

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  6. Jaime, Information Technology Officer, Texas

    I purchased two of these simplex 5021. I had never bought these models nor had I installed these before and it was my first purchase from I was skeptical’ but not anymore. These were simple to install and configure with easy to follow instructions. They are very sturdy. I installed them on the Banks teller area. There is daily traffic. Of the two’ one malfunctioned after about 2 or 3 months of installation. I called Gokeyless and told them about it. They told me what to do and where to call for the manufacturer warranty. I couldn?t be happier with GoKeyLess and the simplex guys. They were nice and quick to replace my malfunctioning door lock. It?s been 6 months now and still working just fine.

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  7. Volkan from New York

    Works perfectly

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  8. Paul from Michigan

    The Simplex 5021 performs well in our food facility. We have replaced several other locks of a different brand with this model with great results. Appreciate the feature that the lock doesnt have to be disassembled to change the code. Well buy it again.

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  9. Everett from New Jersey

    We have had our Simplex 5021 installed and in use for several months now and it has performed flawlessly. It is exactly as advertised and as your representatives described. We are very happy with it and have recommended to several other owners in our oceanside complex. I would highly recommend it and would not hesitate to purchase it in the future.

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  10. Nicole, Prescott, WI

    Our new lock is working great. We are a child care center and we use it as a security enterance for all of our families. We have been in this building for 3 years now and this is our 4th lock we have tried (this is the first one from your company). It is nice and heavy duty – it is also nice that it is not electronic as that seems to be where our problems were coming from in the past. So’ needless to say we are very happy with our purchase.

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Customer Questions & Answers

  1. 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. 

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

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

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

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

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

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

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

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

  6. A

    When the key is used, this will only temporarily unlock the door. This model does not have any passage mode capabilities. However, the Simplex 5041 does have the ability to be left unlocked by turning the interior knob. The Simplex 5041 can be found here:

  7. A

    The Simplex 5000 model is typically ordered with either levers or knobs for both sides (the knob version can be found here). 

    For more information on availability with different knob styles, please contact our sales department at 937-247-9327, option 1!

  8. A

    Yes, there is a handle included for the interior side of the door. However, this handle remains unlocked for exiting the door. 

  9. Q Will this lock open if there is a fire? answer now
    Asked by Joy Hockman on April 25, 2020 2:27 PM

    This lock is rated to remain secured for at least 3 hours in the event of a fire, The lock itself is not programmed to automatically open in this event. 

  10. A

    Unfortunately, there is not a thick door kit available for this model. To explore options for gates that are 3" thick, please contact our sales staff at 937-247-9327, option 1 or [email protected].

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