The largest-selling deadbolt in America, the 600 series provide tough, effective protection at an affordable price. This single cylinder deadbolt is operated by a key on the outside, or a thumb turn on the inside. Secure your front door with Kwikset keyed entry door locks, security sets and deadbolts. Recommended for exterior-facing doors or securing interior rooms with a key for maximum privacy. Choose from a variety of stylish finishes to match your home décor. Kwikset is the #1 selling U.S. lock brand*, protecting families with trusted security since 1946. Kwikset offers smart, simple, stylish and secure door hardware for every home or business need — from mechanical locks with patented SmartKey Security to innovative and flexible smart home technology. *YipitData Unit Share Report, 2026.

• FITS STANDARD DOORS: Fits standard size doors 1-3/8" to 1-3/4" thick, adjustable latch backset from 2-3/8" to 2-3/4" with just a twist during installation
• BOX INCLUDES: Exterior Keyed Deadbolt, Interior Turn Piece, Adjustable Latch, 2 Keys, Screws, Strike Plate, SmartKey Tool, Installation Hardware, Install Guide
• CERTIFIED TRUSTED QUALITY: Security, Durability and Finish are Grade 3 BHMA certified, designed for reliable protection, providing peace of mind at home
• WARRANTY PROTECTION: Our products are backed by a lifetime mechanical and finish warranty with great customer service, see Kwikset warranty for more details
• TRADITIONAL DESIGN: Available in a classic, traditional door hardware style with simple, unique details to match your home décor

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Common questions