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A door lock and deadbolt combo is a keyed entry knob paired with a separate deadbolt. To choose one, compare the knob’s and deadbolt’s certifications individually, check the lock’s fit against your door, and decide whether you want a conventional key-and-thumbturn setup or model-specific smart features. A grade or product listing is a comparison aid, not a guarantee against every break-in method.
What should I look for in a door lock and deadbolt combo?
Start with the two locking components, then check fit, operation, and what the manufacturer lists in the package and warranty. A combo is not one undifferentiated lock: the knob and deadbolt can carry separate certifications.
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- Certifications: Find the stated grade and standard for the knob and deadbolt separately.
- Door fit: Check door thickness, backset, and whether the door has two correctly spaced bore holes for the set.
- Operation: A conventional single-cylinder deadbolt uses a key outside and a thumbturn inside. Smart options vary by model.
- Compatibility: For a connected lock, verify the exact app, hub, connectivity protocol, and supported smart-home integrations.
- Terms and contents: Review the current warranty and the exact listed hardware and accessories for the configuration you are buying.
Manufacturer specifications can establish a product’s published grade, dimensions, and features; they do not amount to independent comparative testing across brands or prove universal resistance to burglary.
What does a BHMA AAA rating mean?
Schlage describes BHMA residential hardware grades across three categories: security, durability, and finish. Its plain-language scale is C for good, B for better, and A for best; AAA means the product has the top grade in all three categories. See Schlage’s explanation of BHMA residential grades.
#1 Best Overall
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The categories address different properties. Schlage’s examples of security evaluation include resistance to sledgehammer attacks, manual pulling, and weight applied to a lever. Durability examples include repeated operation and continued function as a door’s fit changes. Finish evaluation considers wear from factors such as salt, humidity, UV exposure, and scratching. A grade does not establish that a lock will defeat every attack or make an entry door burglar-proof.
Check the certification for the exact model and component. Do not assume every product in a manufacturer’s product family has the same grade.
Rank #2
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- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
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How do you compare the knob and deadbolt certifications?
The cited Schlage Single Cylinder Deadbolt and Siena Knob Keyed Entry Lock listing gives separate certifications for its two parts. The knob is listed as ANSI/BHMA A156.39-2015 Grade AAA for security, durability, and finish; the deadbolt is listed as ANSI/BHMA A156.40-2015 Grade AAA in those categories. Those are the manufacturer’s claims for this configuration, not a rating that should automatically be applied to other sets. Check the combo’s product listing for current model details.
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Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Use the standard and component name when comparing sets. A grade attached to the knob does not tell you the deadbolt’s grade, and a deadbolt certification does not certify the knob.
Rank #3
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- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Will a new deadbolt fit your door?
Measure before ordering. The cited Schlage combo is described for a residential entry door with two bore holes, with a published door-thickness range of 1-3/8 to 1-3/4 inches and an adjustable backset of 2-3/8 or 2-3/4 inches. The combo specification applies to that configuration only.
- Measure door thickness. Measure the edge-to-edge thickness where the lock will be installed, then compare it with the specific product’s stated range.
- Measure backset. Measure from the door edge to the center of the bore hole. Confirm the product supports that measurement.
- Check the bore-hole layout. A knob-and-deadbolt combo requires two appropriately positioned bore holes. Compare the existing preparation with the manufacturer’s installation requirements.
- Check trim and handing requirements. Confirm the exact model’s compatibility with the door and trim before buying; do not infer compatibility from a similar-looking product.
Dimensions can differ even among deadbolts from the same manufacturer. For example, Schlage lists a door-thickness range of 1-3/8 to 1-7/8 inches for its B60 single-cylinder deadbolt with Addison trim, compared with 1-3/8 to 1-3/4 inches for the combo above. That B60 listing also specifies a 2-3/8- or 2-3/4-inch backset and an integrated strike reinforcer with 3-inch screws. See the B60 product specifications; do not transfer those dimensions or included features to another model. If your door preparation differs, the cited combo may not fit without alteration.
Rank #4
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Should you choose a smart lock or a traditional deadbolt?
A traditional keyed deadbolt offers straightforward key access outside and a thumbturn inside. A smart deadbolt may add access-management or status features, but what it can do depends on the exact model and its connectivity, app, hub, power, and supported integrations. Schlage’s comparison guide outlines factors to consider when choosing between smart locks and traditional deadbolts.
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When a mechanical deadbolt is the better fit
Choose a conventional lock if key-and-thumbturn operation meets your household’s needs and you do not want to rely on app or connected features. Confirm the lock’s fit and certification just as you would for a combo set.
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
When a smart deadbolt may be useful
Consider a connected model if your household will use its specific access or status features. For example, Schlage describes Z-Wave Plus S2 connectivity and Alexa lock-status checking for its Connect model; those functions are not features of every smart lock. Check the Connect model details and confirm compatibility with your own equipment and setup.
Schlage’s smart-lock page publishes family-level rating claims, saying Encode and Arrive have AAA ratings while Sense Pro and Connect have BAA ratings. Treat these as manufacturer-published claims, verify the exact model and certification, and do not assume a family-level summary applies to every variant. The same page describes Schlage smart-lock features and ratings. The available product information does not establish that smart locks are categorically more or less secure than mechanical locks.
What should you verify before buying?
- Exact product name and configuration, including whether the listing is a complete knob-and-deadbolt set or a standalone deadbolt.
- Separate certification details for the knob and deadbolt, where applicable.
- Door thickness, backset, bore-hole layout, and compatibility with your door and trim.
- For smart models, required connectivity, app or hub, power, and supported integrations.
- Current warranty terms, listed package contents, finish, and availability on the seller’s listing.
For the cited Schlage combo, the product page states a limited lifetime mechanical and finish warranty. Warranty conditions can change, so check the current terms for the exact product before purchase.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
