Kwikset 660 Series Deadbolt Single Cylinder Deadbolt with Smartkey

Keyed Entry (Single Cylinder) Function: This single cylinder deadbolt is keyed on the exterior with an associated thumb turn on the inside that can quickly and easily lock or unlock the latch mechanism. Single cylinder locks are most commonly used to secure entrances to a residence or place of business.

Product Features:

• Fully adjustable latch to fit all standard door preparations (2-3/8" to 2-3/4" Backsets)
• ANSI/BHMA Grade 3 Security
• Lifetime mechanical and finish warranty
• Patented side locking bar technology offers improved security by protecting against lock bumping, an attack technique used to defeat conventional pin & tumbler locks

SmartKey®: 

• This technology allows you to re-key your lock in seconds with 3 simple steps and features stainless steel racks, pins, and side locking bar for increased strength and security.

Specifications:

• Backset: Adjustable for 2-3/8" or 2-3/4"
• Crossbore: 2-1/8"
• Edge Bore: 1"
• Latch Face: 1" x 2-1/4"
• Door Thickness: 1-3/8" to 1-3/4"
• Cylinder: 5-pin SmartKey cylinder, cannot be keyed alike to a 6 pin cylinder
• Bolt: 1" throw

Additional Functions:

• 660-S (This Model): Single Cylinder Deadbolt
• 665-S: Double Cylinder Deadbolt