The standard measurement of a deadbolt hole requires 2 1/8 inches diameter for the cross bore and 1 inch in diameter for the latch bore. There could be hole sizes bigger or smaller than the standard. Make sure that you use the correct drill bit sizes when drilling for the bores.
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.
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.
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.
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.
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.
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.
As the strongest grade, it can be used for residential applications too, but it is predominantly found in commercial and industrial applications. 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.
In the United States, there are two common backsets for residential door locks: 2 3/8 inches and 2 3/4 inches. Pack your locks with a 2-3/8-inch or 2-3/4-inch latch, depending on which backset you specify.
Most standard deadbolts require a 2-inch hole saw for the lock bodies and a 1-inch spade bit for the sliding bolt assembly, so be sure to use the correct size drill bits.
Take the protective rubber nib off the tip of the bobby pin before straightening it out; this is how you make your lock pick. Then, take another bobby pin and bend the end of it at a 90° angle to make a tension wrench; this is the second thing you need in order to pick a deadbolt with a bobby pin.
It's quite easy to pick a deadbolt lock. In fact, you would want to replace all your key locks with electronic ones when you discover how simple it is. This doesn't mean that picking a deadbolt lock does not require skills or practice – it still does – but the technique is so easy that anybody can learn it.
ANSI Grade 1 (Best) - Kwikset - Door Locks - Door Hardware - The Home Depot.
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.
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.
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.
ANSI Grading System
These product grades are defined by progressive levels of performance benchmarks in each applicable standard. The purpose of each is to help identify the quality and durability of locksets through a series of operational and security tests.
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.
Double-cylinder deadbolt locks are not considered safe for emergency exits. Some safety experts don't believe they belong in residential homes at all. In fact, double-keyed deadbolts are actually illegal in some places.