Kwikset 663 SQT Square One-Sided Bolt Satin Nickel

Part Nr: 663SQT-26D



One Sided



Square Corner


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


1-5/8 Inches

Our Price


Sale Price


Free Shipping on orders over $99.00!
Free Shipping on this finish!
This Product Ships for FREE!
April sale: 5% Off all Kwikset products!
No coupon necessary. Discount already applied.
Coupon expires on 04/30/2024

Remaining items are out of stock.



Remaining items are out of stock.

You might also need


Product Summary

Thumb Turn One-Sided Bolt



  • Features adjustable latch & deadbolt to fit all standard door preparations
  • ANSI/BHMA Grade 3 Security
  • Add to a keyed knob or lever for additional security
  • Lifetime mechanical and finish warranty


  • Door Prep: Cross Bore 1-5/8",
  • Backset: 2-3/8" or 2-3/4"
  • Door Thickness: 1-3/8" - 1-3/4"

Product Identifiers


Questions & Answers (3)

Question: Is it possible to have a thumb-turn on both sides?

Asked by Daniel on December 24, 2021

Answer: Daniel, That is not a function we can order.

Answer provided by Michael on December 24, 2021

Question: Can you clarify the lock type? Is it like a regular deadbolt?

Asked by Roland Valle on September 24, 2020

Answer: Roland, One Sided: A one sided deadbolt locks a door from the inside. These are commonly used on patio doors.

Answer provided by Michael on September 25, 2020

Question: I like this deadbolt, except my bore hole is 2 1/8". What deadbolt has this same appearance with a bigger bore hole size?

Asked by Kent Bos on August 2, 2020

Answer: Kent, 258 SQT SMT

Answer provided by Michael on August 3, 2020

Reviews (0)

Customer reviews

Be the first to review this product.

Write a review

Kwikset 663 SQT Square One-Sided Bolt
Kwikset 663 SQT Square One-Sided Bolt
Overall rating
Click to rate*
Add a photo
Images are very helpful for customers
Add a title and written review
Public Name and email
Thank you for your review.
Professionals get additional benefits

Don't have an account? Sign up today to take advantage of these exclusive benefits.

Be The First To Know* 5% off for new customers

* You will only hear from us once a month.
No Spam here! We respect your privacy and will never share your information.