The BHMA/ANSI has three, separate grades for deadbolts, simply labeled grades 1 through 3. Grade 1 is the highest quality, and the most dependable deadbolt you can have. Grade 3 is your average deadbolt which will provide an accepted, but minimal, level of security.
Grade 1 not only meets commercial building requirements, it also provides the best security available against vandalism and heavy usage. Grade 2 meets light commercial requirements and exceeds residential building requirements. These locks are adequate for lighter duty doors where security is less of an issue.
What is Lock Grade 3? Grade 3 Deadbolts are the Least Secure and NOT Recommended. Lock grade 3 is the least secure of the three lock grades. It should be considered basic door hardware, for non high security situations, and is the least expensive. It is also the common lock you will find on homes.
ANSI Grade 2- This is a high residential security or low commercial grade. It is designed to offer superior security and durability for homes and light commercial use. ANSI Grade 3 - This is a basic residential security lock that meets the lowest acceptable quality standards for locks by the ANSI.
Also in the non-forced entry category, there is no doubt Schlage is better. With a better, more precise manufacturing process and 2 additional security pins than the Kwikset deadbolt, Schlage locks are significantly harder to pick, bump or compromise in non-destructive ways.
ANSI Grade 1 (Best) - Kwikset - Door Locks - Door Hardware - The Home Depot.
ANSI Grade 1 door locks offer the highest level of lock security. These locks are very difficult to pick or break and are resistant to any tampering with the lock's parts like removing pins, screws, etc. They're mostly used in high-security and commercial settings like banks and office buildings.
ANSI GRADE
The American Nation Standards Institute (ANSI) grading system for deadbolts was developed by the Builder's Hardware Manufactures (BHMA). This grading system ranges from 1 (the highest grade) to 3 (the lowest grade). It factors in longevity of the lock, toughness, and latch length.
The BHMA/ANSI has three, separate grades for deadbolts, simply labeled grades 1 through 3. Grade 1 is the highest quality, and the most dependable deadbolt you can have. Grade 3 is your average deadbolt which will provide an accepted, but minimal, level of security.
Optimal for commercial and residential use, Grade 1 is the strongest grade ANSI recognizes. The best grade equates it to the highest grade security. The doorknob tolerates a minimum of 800,000 cycles, 6 door strikes and 360-pound weight test to earn this rank.
How Secure Is It? A lock's security is denoted by its American National Standards Institute (ANSI) grade, with Grade 1 the most secure and Grade 3 the least. A builder-quality tubular lock will likely be a Grade 3, a good-quality handleset a Grade 2.
Bump-proof locks are just more resistant to picking and bumping. Their resistance comes from an extra set of tumblers, which gives the key two jobs to do. It creates a more complicated locking mechanism, making the lock more resistant to these attacks.
Even though there is a standard size for deadbolts, you might need smaller or larger sizes depending on the size and thickness of your door. Different brands have deadbolt sizes as small as 2 inches and as big as 5 inches.
Grade 1 Hardware – Heavy Duty Usage
Grade 1 hardware is specifically designed for the extreme use it would get in a high traffic facility such as a convenience store. They can withstand a very high number of life cycles and are much harder to break when it comes to thieves and vandals.
Storeroom locks are used when the outside lever should be locked at all times. A key is used to retract the latchbolt and open the door; when the key is removed the door is locked on the outside. There is no means to lock/unlock the door from the inside.
The major benefit of double cylinder deadbolts is that they are designed to offer high security level. This makes doors that have them more difficult for intruders to pick or unlock. Double cylinder deadbolts are the safest choice for homeowners.
Generally, single-cylinder deadbolts are less secure than double-cylinder options. They could potentially allow easier access to the home from intruders in the know. Furthermore, they're easy for small children to use, which means they could get outside without anyone being aware.
Kwikset 980 Single Cylinder Deadbolt
The Kwikset 980 has a top security rating and is resistant to lock picking, bumping, and drilling. The 980 is easy to install and fits most standard doors.
The Kwikset Signature Series deadbolt with Home Connect featuring Z-Wave™ protocol to enable true remote locking and unlocking. Homeowners can remotely access and control the lock from anywhere in the world, using a smartphone, tablet, or Internet-connected device.