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Current Finish:

158 Halifax Square Deadbolt

Model: 158 SQT 15 SMT

Function: Single Cylinder Deadbolt

The Halifax square deadbolt offers a sleek design, reflecting the sophistication and simplicity of the new modern home.
Available through Special Order at a Home Improvement Retailer or through Wholesale and Distribution Partners
  • Features adjustable latch & deadbolt to fit all standard door preparations
  • ANSI/BHMA Grade 2 Certified Security
  • Add to a keyed knob or lever for additional security
  • Lifetime mechanical and finish warranty
  • Featuring SmartKey® Re-key Technology with BumpGuard™ Protection
  • SmartKey cylinders feature a stainless steel side locking bar, racks and pins for increased strength and security
  • Patented side locking bar technology offers improved security by protecting against lock bumping, an attack technique used to defeat conventional pin & tumbler locks.
  • Meets ADA/ANSI A117.1 requirements, ensuring accessibility to all disabled persons
  • Do not use prints made from this website to mark distances.
    Due to individual printers, dimensions on installation instructions may not print at an accurate scale.

  • Kwikset products are backed by one of the most comprehensive warranty programs available. You can feel confident that with the purchase of Kwikset you have selected the best quality product, backed by the best customer service available.

    This product comes with a lifetime mechanical and finish warranty to the original residential user of Kwikset against defects in material and workmanship as long as the original user occupies the residential premises upon which the product was originally installed. One year electronic warranty. This warranty DOES NOT COVER scratches; abrasions; deterioration due to the use of paints, solvents or other chemicals; abuse; misuse; or product(s) used in commercial applications. Upon return of a defective product to Kwikset Corporation, Kwikset may repair or replace the product or refund the purchase price. Kwikset is not liable for incidental or consequential damages. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above exclusion may not apply to you. This warranty gives you specific legal rights and you may also have other rights that vary from state to state. If a mechanical or finish defect occurs, please call 1-800-327-LOCK (5625) in the U.S. and Canada or return it to Kwikset Corporation, Consumer Services, 19701 Da Vinci, Lake Forest, CA 92610. For customers outside of the U.S. and Canada, claims under this warranty must be made only to either the place of purchase or to the listed importer.

    Consumer Services
    19701 Da Vinci
    Lake Forest, CA 92610
  • No specialty functions available
  • In Oct 2014 I installed the deadbolt (Kwikset 158 Halifax Sq.) for my door. On Oct 2015 I went to lock the deadbolt. I inserted the key & turn it to the left to lock it & the cylinder just rotated. Please help and advice of my options. Thank you

    Asked by: Adrian Aguirre
    Hello Adrian Aguirre,Kwikset covers their locks under a Limited Lifetime Warranty. For assistance in troubleshooting your lockset and warranty support please contact Kwikset Consumer Service at 1-800-327-5625.Thank you,Kwikset Support
    Answered by: Wendy F
    Date published: 2015-10-05

    Are there any photos available of the thumb side of the lock?  I only see the lock side.

    Asked by: Looking for locks
    Hello Looking for locks,Here is a link that will show you the interior side of the deadbolt lock. you,Kwikset Support
    Answered by: Wendy F
    Date published: 2015-09-12

    whats the overall size of this?

    Asked by: she
    Hello She,The following link will give you the dimensions on the Halifax #158 deadbolt. you,Kwikset Support
    Answered by: Wendy F
    Date published: 2015-09-09

    When installing in a hollow metal door, the locksmith said to buy a drive in latch because the strike plate that comes with the Milan deadbolt is only suited for wood doors. Which specific product do I need to buy to accomplish this?

    Asked by: parker23
    Hello parker23,You will need to purchase drive in latch part number 83371.Thank you,Kwikset Support
    Answered by: Wendy F
    Date published: 2015-09-03

    I bought this and had someone install a new door and this deadbolt. He used the Smartkey to rekey my current key. However, none of my additional keys will work in the door. Any suggestions?

    Asked by: Beth
    Hello Beth,Smart Key will only allow one key cut to function the door. If you have made copies of the key the installer re-keyed the lock to, it is suggested to take the functioning key and have the other copies re-copied to that functioning key.For further assistance you may contact Kwikset technical support at 1-800-327-5625.Thank you,Kwikset Support
    Answered by: Wendy F
    Date published: 2015-07-23

    Is the thumb turn lever already included when you purchase this model? The photos doesn't include how the turn lever looks like so I wonder if it complements the front design.

    Asked by: Berry
    Hello Berry,Yes, the exterior has a keyed entry and the interior has a thumb turn lever for locking and unlocking.Thank you,Kwikset Support
    Answered by: Wendy F
    Date published: 2015-06-03

    So are you saying that if I were to buy both the 158 milan and the 664 retrofit kit I couldn't mix the component parts?

    Asked by: too many doors
    Hello too many doors,The 158 milan is made for a turn piece on the interior and a keyed entry on the exterior and can not be mixed with the 664 retrofit kit.Thank you,Kwikset Support
    Answered by: Wendy F
    Date published: 2015-05-27

    What thick door screw kit works with the 158 Milan round deadbolt?  I bought this and I am having trouble trying to locate screws for a thick door.

    Asked by: landy1
    Hello landy1,To order a thick door kit for your 158 Milan use part #820289 please contact Kwikset Consumer Service at 1-800-327-5625.Thank you,Kwikset Support
    Answered by: Wendy F
    Date published: 2015-05-27
    • 2015-10-09T09:01CST
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