Kwikset 660SQT Single Cylinder Square Deadbolt Collection

by Kwikset
Save $22.05
Kwikset's Square Deadbolt has a sleek and simple design. Priced affordably, this deadbolt offers achievable style while maintaining superior security. 
  • 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
  • SmartKey® Re-key technology is compatible with Kwikset (KW1) keyway
  • 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


  • Single Cylinder Deadbolt - 660SQT SMT- Deadbolt unlocked/locked from either thumb turn inside or key outside.  Cylinder on exterior and thumb turn on inside.


    • For 2-3/8 Or 2-3/4" Backset - Drive In, Round Corner, Or Square Corner Latch Applications
    • Radius Corner Strike
    660 Installation Instruction - Click Here
    665 Installation Instructions - Click Here
    Product Specifications - Click Here

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