Kwikset 660RDT-15S.DS Round Single Cylinder Deadbolt with SmartKey Satin Nickel

Part Nr: 660RDT-26DS.DS



Single Cylinder


Adjustable 2-3/8 or 2-3/4 Inches




2-1/8 Inches



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Product Summary

The largest-selling deadbolt in America, the 660 RDT series deadbolt provides tough, effective protection at an affordable price.

Single Cylinder Deadbolt for 2-1/8” Bore Hole. Kwikset is America’s #1 selling lock. This Kwikset 660 RDT single cylinder deadbolt is intended for doors with a 2-1/8”" bore hole. This Kwikset deadbolt features a 1” bolt and meets ANSI Grade 3 requirements. Please call (866) 259-8901 if you have any question or would prefer to order by phone. We are here to help!


  • 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
  • Featuring SmartKey® Re-key Technology. The lock you can re-key yourself in seconds


  • Door Prep: Cross Bore 2-1/8", Edge Bore 1"
  • Backset: Adjustable to 2-3/8" or 2-3/4"
  • Door Thickness: 1-3/8" - 1-3/4" (Kit Available for 2-1/4" Thick)

Product Identifiers


Technical Documents

Instructional Videos

How to Re-Key a SmartKey Security Lock
How to Re-Key a SmartKey Security Lock

Questions & Answers (1)

Question: Can these be keyed same as door lever lock set made by Kwikset on same order

Asked by Craig on December 21, 2021

Answer: Craig, Yes, you would just need to select "Keyed Alike" for all items you wish to operate with the same keys.

Answer provided by Michael on December 22, 2021

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Kwikset 660 RDT SMT Round Single Cylinder Deadbolt with SmartKey
Kwikset 660 RDT SMT Round Single Cylinder Deadbolt with SmartKey
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