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.
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 2 requires a key in knob, must hold up to 150 lb-in and a lever must hold up to 225 lb-in. Grade 3 requires a key-in-knob to withstand at least 120 lb-in and a lever lock must withstand at least 180 lb-in.
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.
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.
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 1 (Best) - Kwikset - Door Locks - Door Hardware - The Home Depot.
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.
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.
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 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.
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.
CR's take: The Medeco Maxum 11TR503-19 is the strongest deadbolt across all of our lock categories. It rates Excellent for drilling, withstands kick-ins very well, and is designed in a way that makes it very difficult to pick.
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.
Grade one is the highest performance, followed by grades two and three. The ANSI/BHMA grading system is useful for ensuring the most appropriate hardware is specified for each application. The expected usage and necessary security for the installation should be considered when deciding which grade will be needed.
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.
Kwikset 980 Single Cylinder Deadbolt
Like the 660, the Kwikset 980 is sturdy, attractive, and comes with Kwikset's SmartKey technology that allows you to re-key your own locks. The major difference is that the 980 is an ANSI Grade 1-rated lock that can withstand a substantial amount of abuse.
The Smart Key (or SmartKey) is a user-rekeyable wafer lock made by Kwikset and Weiser (Canada). It uses five wafers that interact with a sidebar to provide protection against lockpicking and key bumping.
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.
Walter Schlage is a prestigious brand in the international lock industry. It offers a wide range of high-grade locks such as Deadbolts, Knobs, Levers, Handlesets, Electronic Locks, and Smart Locks. All Schlage products have premium metal construction that adds strength and security.
In the U.S., there is no single comprehensive law against dual-cylinder deadbolts. Individual cities and states have local property and fire codes that may prohibit the use of dual-cylinder deadbolts. The code may prohibit the use of dual-cylinder deadbolts in some buildings and allow them in others.