Locks and Hardware
ANSI grades rank how much abuse a lock is built to survive: Grade 1 is the heaviest duty, Grade 2 is the middle, Grade 3 is the lightest. The grades come from the ANSI/BHMA standards that hardware is tested against, not from the brand on the box. For a New York City apartment or house entry door, Grade 2 is the sensible floor and Grade 1 is better. For a building entrance, a storefront or any door the whole block touches, Grade 1 is the only honest answer. Grade 3 belongs on interior doors.
The grading system comes from the A156 family of standards written by the Builders Hardware Manufacturers Association and approved as American National Standards, which is why you see them written as ANSI/BHMA. Different standards in that family cover different hardware: bored and preassembled locks, mortise locks, auxiliary locks such as deadbolts, exit devices, closers and hinges each have their own. Within a standard, a product is tested and lands at Grade 1, Grade 2 or Grade 3.
What gets tested is endurance and force, not cleverness. The lab runs the lock through operating cycles, hits it, twists the knob or lever with measured torque, and loads the bolt. A higher grade means the lock survived more of all three. Under the bored-lock standard, a Grade 1 lockset is cycle-tested to 800,000 operations, Grade 2 to 400,000 and Grade 3 to 200,000 - a useful way to picture the gap. Strength and torque thresholds climb with the grade in the same way.
The honest way to read this: Grade 3 is built for a closet door that is opened twice a day by one household. Grade 1 is built for a door that 200 people pull on before lunch. Most New York entry doors sit somewhere between those two realities, which is why Grade 2 is the usual minimum and Grade 1 is the upgrade that actually pays off.
Grade should follow traffic and consequence, not the price tag. This is how we specify it on everyday New York jobs.
This is where most buying decisions go wrong. A Grade 1 lock is a strong, long-lived lock. It is not automatically a hard lock to defeat, and it cannot rescue a bad door.
Put plainly: the grade tells you how long the lock will keep working. The cylinder tells you how hard it is to pick, bump or drill. The door, the frame and the strike tell you how hard it is to simply kick past all of it. Three separate questions, and a Grade 1 lock only answers the first.
Send a photo of the lock and the edge of the door and we will tell you what is there, what grade it makes sense to move to, and whether the frame needs attention first. Licensed NYC locksmith, NYC DCA #1362785-DCA.
You can learn most of it in two minutes without tools.
Moving from Grade 3 to Grade 2 on a residential entry door is a small, obvious upgrade. Moving from Grade 2 to Grade 1 costs more, and it is worth it on doors that are used constantly, abused regularly or expensive to fail: a building entrance, a shop door, a back-of-house door that the staff shoulder open with full hands.
On a quiet apartment door used by two adults, the money is usually better spent on the parts the grade does not cover - a high-security cylinder with key control, a reinforced strike with long screws into the stud, and a frame that is sound. A Grade 1 lockset bolted into a split jamb is an expensive way to stay vulnerable. That ordering of priorities is covered in improving apartment door security.
One more New York-specific note. If you live in a co-op or condo, or you rent, the door you want to upgrade may not be entirely yours to change. Apartment entry doors are frequently fire-rated assemblies and governed by house rules, so check before buying hardware - see changing locks in a co-op versus a condo and who pays for locksmith work, tenant or landlord.
Finally, on hiring: New York City licenses locksmiths, and the license number should appear on the invoice, the vehicle and the website. Ours is NYC DCA #1362785-DCA. Ask for it, and treat a quote far below everyone else as a warning - see how to verify a locksmith license and how to avoid locksmith scams.
A Grade 1 lock is the highest durability tier in the ANSI/BHMA standard it was tested against, built for heavy commercial traffic. Under the bored-lock standard it is cycle-tested to 800,000 operations against 400,000 for Grade 2 and 200,000 for Grade 3. Nothing prevents using it at home.
For most apartments, yes. Grade 2 is the sensible minimum for a door between a home and a public hallway, especially a deadbolt with a one-inch bolt throw fitted into a reinforced strike. Grade 1 is better on doors that take heavy use.
No. Grading measures durability and force resistance, not resistance to picking, bumping or drilling. Those properties come from the cylinder and are covered by separate standards such as the UL 437 listing used for high-security cylinders.
It is normally printed on the packaging and the installation sheet rather than stamped on the visible face. If the lock is installed and the box is long gone, the model number on the latch face or edge plate identifies it, or send a photo.
On doors used constantly or expensive to fail - building entrances, storefronts, back-of-house doors - clearly yes. On a quiet apartment door the money usually does more good in a high-security cylinder with key control and a reinforced strike with long screws.
In most cases yes, and often without modifying the door, since graded hardware uses standard preparations. The limits are the condition of the door and frame and, on apartment and stair doors, any fire rating and building rules. Call (718) 412-1332 with a photo.