Walk into any hardware store and you will find dozens of deadbolts at wildly different price points. With options ranging from $15 to $300, it is easy to overpay for marketing hype or underpay for something that fails when it matters. Here is what actually matters when choosing a deadbolt.
ANSI/BHMA Security Grades
The American National Standards Institute (ANSI) grades residential deadbolts on a scale of 1 to 3:
- Grade 3: Minimum security. Most big-box builder-grade locks. Fine for interior doors.
- Grade 2: Good residential security. Standard for most homes.
- Grade 1: Highest residential grade. Recommended for exterior front doors.
For exterior doors in Prosper TX, target at minimum a Grade 2 deadbolt from a known brand like Schlage, Kwikset, or Medeco. Grade 1 is worth the extra cost on your primary entry door.
Bolt Throw Length
The bolt throw is how far the bolt extends into the door frame. Look for at least 1 inch of throw. Shorter bolts are easier to force. Most quality deadbolts offer exactly 1 inch, which is the ANSI minimum for Grade 1.
Strike Plate and Screws
Here is what most homeowners overlook: a great deadbolt on a weak strike plate is still a weak door. The strike plate (the metal plate in your door frame where the bolt enters) should be:
- A heavy-duty box strike, not a flat plate
- Secured with 3-inch screws that reach the wall stud, not just the door trim
A door can be kicked in not because the lock failed but because the strike plate pulled out of the frame with three short screws. This upgrade costs under $20 and takes 10 minutes.
Bump and Pick Resistance
Standard pin tumbler locks can be opened with bump keys or pick tools. If security is a priority, look for locks with security pins (spool or serrated pins) or upgrade to a high-security line like Schlage B60N, Medeco, or Mul-T-Lock. These are significantly harder to bypass.
Single vs. Double Cylinder
Single-cylinder deadbolts (key outside, thumb turn inside) are standard and convenient. Double-cylinder deadbolts (key on both sides) prevent break-ins through adjacent glass but create a fire hazard — you need a key to exit in an emergency. Texas building codes generally do not require double-cylinder locks, and most locksmiths advise against them for bedrooms or main exits.
Professional Installation Matters
Even a Grade 1 deadbolt performs poorly if it is misaligned, installed with short screws, or in a weak door frame. Our locksmiths in Prosper TX do every installation correctly — aligned, tested, and reinforced. Call (972) 544-4574 for deadbolt installation or upgrade service.
Looking for professional locksmith help? Contact 1st Class Locksmith in Prosper TX — available 24/7 at (972) 544-4574.