Kwikset / 158 Square Deadbolt / Single Cylinder - SmartKey (Square)

Modern Deadbolt Security With SmartKey Control

The Kwikset single cylinder deadbolt with SmartKey gives your entry door a clean, modern look with dependable Grade 2 security. Its square Halifax design fits contemporary homes especially well, while the single-cylinder function keeps everyday locking simple, with a key on the exterior and a thumbturn on the interior.

This deadbolt is a strong choice for front doors, side doors, and back entrances. If you are comparing similar options, you can also browse our full selection of single-cylinder deadbolts.

Easy Rekeying for Changing Access Needs

SmartKey Security™ helps protect against common break-in methods while allowing you to rekey the lock yourself in seconds. That makes this Kwikset single-cylinder deadbolt with SmartKey especially useful after a move, tenant change, or anytime you want to match new hardware to an existing key.

Door Locks Direct also offers free standard keying on eligible keyed locksets, making it easier to coordinate multiple locks across your home. For more matching options, explore our selection of Kwikset knobs and levers.

Key Features

• Kwikset single-cylinder deadbolt with SmartKey in a square Halifax design
• Single cylinder function with key exterior and thumbturn interior
• SmartKey cylinder with BumpGuard protection
• Full 1" steel throw bolt for secure locking
• Residential Grade 2 security
• Adjustable backset for 2-3/8" or 2-3/4" applications
• Reversible for right- or left-hand doors

A Sharp Finish for Everyday Entry Doors

This deadbolt works well anywhere you want straightforward security with a more modern profile. Pair it with coordinating Kwikset knobs, levers, or handlesets to create a complete exterior door setup with a clean square look.