Stanley Security QDB284 Grade ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$68.00
$51.28
Stanley Security QDB284 Grade 2 Standard Duty Auxiliary Deadbolt - Inside Turnbolt

Stanley Security QDB284 Grade 2 Standard Duty Auxiliary Deadbolt - Inside Turnbolt

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Model: QDB284-626-S4-DBS
$68.00
$51.28
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$68.00
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QDB200 Deadbolt Lock

QDB200 series Grade 2 deadbolts have more built-in features for attack resistance. In addition to quality materials and construction, we added components to combat saw, drill, and wrench attacks. When you’re choosing a deadbolt for light commercial applications, choose the name more people trust for their security

Features

  • SmartKey™ flexibility
    • An available re-key system to permit re-keying the lock without having to change or remove the product from the door, and an available key control function make the QDB200 series more versatile and convenient for use and maintenance
  • Greater security
    • Constructed with a full 1” steel throw bolt and hardened steel roller pin, two ball bearings, and free-spinning cylinder collar, QDB200 series deadbolts resist saw, drill, and wrench attacks.
  • Backed by leading warranties
    • The QDB200 series comes with lifetime mechanical and three-year finish warranties.
  • Easy to retrofit
    • Choose deadbolts with a SFIC option or keep your existing small format cores and use them with QDB200 series products. Standard door preparation makes retrofit quick and easy.
  • Flexible installation
    • Compartmentalized packaging makes QDB200 deadbolts easierto install, and an adjustable backset deadbolt latch gives you greater flexibility at the point of installation.
  • Additional security features
    • Depending on your application, available options like hurricane compliance can add an additional layer of reliability and security.
  • Short lead time
    • Our QDB200 series deadbolts are available for immediate shipment.

Certifications:

  • ANSI/BHMA A156.12 Series (1999)—Grade 2
  • ANSI A117.1 Accessibility Code (ADA compliant)
  • UL/cUL listed (3 hour) for “A” label single door applications (4’ by 8’) UL10C/UBC 7-2 (1997) positive pressure rated
  • UL10B pressure rated
  • Hurricane Compliant – Miami DADA N.O.A.
  • ADA compliant thumb turn

Product Specifications:

  • Exposed trim: stainless steel with iron forged cylinder guard
  • Door range: 1 3/8” (35mm) – 2” (51mm); service part 8Q00082 spacer rings required for 1 3/8” doors
  • Backset: 2 3/4” (70mm) square standard; 2 3/8” (60mm) available
  • Strike: standard deadbolt strike 1 1/8” (32mm) x 2 3/4” (70mm); other options available Door prep: 2 1/8” (54mm) diameter cross bore
  • Latch bolt: full 1”(25.4mm) throw with hardened steel roller
  • Latch faceplate: 1 1/8” (29mm) x 2 1/4” (57mm) standard; 1” (25.4mm) x 2 1/4”
  • (57mm) available

Recommended applications

Functions:

Finishes:

  • Bright Brass
  • Oil Rubbed Bronze
  • Satin Nickel
  • Bright Chrome
  • Satin Chrome

Product downloads

Manufacturer Resources

Product Specs

Product Group:
Mechanical Locks
Series:
QDB200 Series
Product Subgroup:
Bored Locksets
Product Type:
Deadbolts
Subcategory:
Mechanical Door Locks
Commercial/Residential:
Commercial
Grade:
Grade 2
Duty Level:
Standard Duty
Standard Strike:
1-1/8" x 2-3/4", Square Corner
Product Attribute:
Deadbolts
Product Function:
Cylinder x Thumbturn
Product Category:
Mechanical Locks
Department:
Door Hardware

Stanley Security QDB284-626-S4-DBS – Frequently Asked Questions

1) Will the Stanley QDB284 deadbolt fit a 1-3/8 inch door?
Yes, the QDB284 covers doors from 1-3/8 inch (35mm) up to 2 inch (51mm), but 1-3/8 inch doors need the 8Q00082 spacer rings, which are a separate service part. At 1-3/4 inch, the standard commercial thickness, it installs with no extras.
2) Can the QDB284 deadbolt drop into an existing deadbolt bore, or do I have to re-prep the door?
It uses standard door prep: a 2-1/8 inch (54mm) cross bore, with 2-3/4 inch backset standard and 2-3/8 inch also offered. The deadbolt latch is adjustable backset, so one unit covers either hole spacing at the point of install. The strike is the common 1-1/8 x 2-3/4 inch square corner deadbolt strike. If your old bolt used that prep, the QDB284 goes back into the same holes.
3) Is the QDB284 deadbolt approved for a fire rated door?
It is UL/cUL listed for 3 hours on "A" label single door applications up to 4 feet by 8 feet, positive pressure rated to UL10C/UBC 7-2 (1997), and also UL10B pressure rated. It carries ANSI/BHMA A156.12 Grade 2 and meets ANSI A117.1 accessibility, with an ADA compliant thumbturn.
4) What do I have to choose when ordering the QDB284 deadbolt?
Three things. Backset, either 2-3/4 inch or 2-3/8 inch. Face plate corners, round or square, matched to how your door edge is currently mortised. And finish, from 605 bright brass, 613 oil rubbed bronze, 619 satin nickel, 625 bright chrome, or 626 satin chrome. A 1 inch x 2-1/4 inch faceplate is offered as an alternative to the 1-1/8 x 2-1/4 inch standard.
5) Can I use my existing small format interchangeable cores with a QDB200 deadbolt?
Yes. The QDB200 series is offered with an SFIC option so your existing small format cores drop straight in and stay on your current keying system. A SmartKey re-key option is also available on the series, which lets you re-key without pulling the lock off the door, useful for turning apartments or storage units quickly.
6) I need a Grade 1 deadbolt instead of Grade 2. What else does ZenSupply carry?
The QDB284 is Grade 2. If the spec calls for Grade 1, the Dexter DB1000 single cylinder deadbolt is a Grade 1 cylinder x thumbturn covering 1-3/8 to 1-7/8 inch doors, and the Accentra D111 is Grade 1 with a 2-3/8 inch backset for 1-3/8 to 1-3/4 inch doors. For a thicker door, the Corbin Russwin DL3011 Grade 1 cylindrical deadlock is listed for 1-3/4 to 2-1/4 inch.
7) What is the closest Grade 2 single cylinder deadbolt equivalent to the Stanley Security QDB284?
The QDB284 is a Grade 2 deadbolt with a cylinder by thumbturn function. The closest matches on the same grade and function are the Arrow DBX61 single cylinder deadbolt, the Falcon D211 in the D200 Series, the Dexter DB2000-SCT single cylinder, and the Cal-Royal CB160 single cylinder deadbolt with tamper-resistant cylinder guard. All four are Grade 2 keyed outside with an inside turn, so they cover the same basic opening the QDB284 does.
8) The QDB284 has an inside turnbolt - what do I use if I need a key on both sides instead?
The QDB284 is keyed outside with a thumbturn inside, so it will not work where a key is required on both faces. For a double cylinder deadbolt, the Dexter DB2000-DCT is Grade 2 for 1-3/8 inch to 1-3/4 inch doors, the Delaney LU Series 320601 is Grade 2 in stainless steel US32D, and the Hager 3214 is a Grade 2 double cylinder with a Schlage C keyway for 1-3/8 inch to 1-3/4 inch doors. Verify your local egress code before specifying double cylinder.
9) I need a heavier deadbolt than the QDB284 for a high traffic entry - what steps up to Grade 1?
The QDB284 is a Grade 2 standard duty deadbolt. For a Grade 1 cylinder by thumbturn in the same basic configuration, look at the Accentra D111 in the D Series, the Falcon D111 heavy duty D100 Series with adjustable backset, the Dexter DB1000-SCT, the Deltana CL200LM, or the Delaney LM Series single cylinder less core deadbolt. The Falcon D111 and Accentra D111 are both cataloged at a 2-3/8 inch backset or adjustable, so confirm the backset against the bore you already have.
10) What should I order instead of the QDB284 if the door needs to be non-keyed on the exit side?
The QDB284 is a keyed cylinder by thumbturn deadbolt. For a non-keyed opening, the Arrow E60 Grade 2 exit deadlock is a blank plate by thumbturn for 1-3/8 inch to 1-3/4 inch doors, and the Callan Model 205S is a Grade 3 one-sided half-bore deadbolt where only one face is prepped. The Corbin Russwin DL2211 and DL3211 are cylinder by blank Grade 1 cylindrical deadlocks, which is the reverse arrangement - keyed outside with nothing to operate inside.
11) I keep my facility on small format interchangeable cores - which deadbolts besides the QDB284 accept an SFIC?
The QDB284 can be ordered with an SFIC option so existing small format cores carry over. If you are sourcing a second line, the Arrow E61 26D IC is a Grade 2 single cylinder deadlock prepped for SFIC less core for 1-3/8 inch to 1-3/4 inch doors, the Deltana CL200LAIC is a Grade 2 interchangeable core deadbolt at a 2-3/4 inch backset, and the Delaney LM Series 301702 is a Grade 1 single cylinder less core in dull chrome US26D.
12) Which deadbolts are the wrong substitute for a QDB284 even though they look similar in a search?
A few items sit close to the QDB284 in a deadbolt search but do not drop into the same bored door prep. The Arrow 460 is a mortise lock strike, not a lock. The BEST 8T is a tubular deadbolt tube component rather than a complete lock, and the Baldwin 8BR0618001 is a deadbolt spacer. The Codelocks CL200 and CL2200 are surface mounted deadbolts, and the Emtek 2050 and 2051 are European mortise deadbolts with an integrated roller latch - all mortise or surface applications rather than the QDB284's 2-1/8 inch cross bore prep. The DynaLock 1300 is a mortise electric deadbolt requiring power.
13) My openings are keyed to Schlage C - which alternatives to the QDB284 come in that keyway?
The QDB284 is available with the SC Schlage C keyway. If you need a second source on the same keyway, the Hager 3115 is a Grade 2 cylinder by thumbturn deadbolt with a Schlage C keyway for 1-3/8 inch to 1-3/4 inch doors, and the Hager 3118 is a Grade 1 classroom deadbolt with Schlage C and a 6-pin cylinder. The Dormakaba D900 small case mortise deadbolt also ships with SC keyways, though it is a mortise case rather than a bored deadbolt.
14) The QDB284 needs a spacer ring for 1-3/8 inch doors - what Grade 2 deadbolt covers that thickness without one?
The QDB284 covers 1-3/8 inch to 2 inch doors, with service part 8Q00082 spacer rings required at 1-3/8 inch. If you would rather not stock the spacer, the Dexter DB2000-SCT is a Grade 2 single cylinder rated 1-3/8 inch to 1-3/4 inch, and the Hager 3215 is a Grade 2 single cylinder with a 1 inch throw over the same 1-3/8 inch to 1-3/4 inch range. Note that neither reaches the 2 inch top end the QDB284 does.
15) Is the QDB284 or one of its alternates the right pick for a thicker than standard commercial door?
The QDB284 handles doors from 1-3/8 inch up to 2 inch. If your leaf is thicker than that, the Corbin Russwin DL3011 Grade 1 cylindrical deadlock in the DL3000 Series covers 1-3/4 inch to 2-1/4 inch. The Deltana 7312KA2 double cylinder Grade 3 spans 1-3/8 inch to 2 inch if a key is needed on both sides at that thickness.
16) Will a 1 inch throw deadbolt like the QDB284 reach the strike on a door with a wide gap?
The bolt is a full 1 inch (25.4mm) throw with a hardened steel roller pin inside it, so it projects the full inch into the frame. That roller also spins if someone tries to saw the bolt. Pair it with the supplied 1-1/8 x 2-3/4 inch strike and reinforcer for the frame side.
17) Is this deadbolt meant to be the only lock on the door?
The QDB284 is an auxiliary deadbolt, cylinder outside and turnbolt inside. It is normally installed above a cylindrical lockset to add a second point of security rather than acting alone, and it is a standard duty, Grade 2 light commercial product. Typical places you see it are storage rooms, park and rest area restrooms, and commercial office doors.
18) Does the QDB284 deadbolt hold up in a coastal or hurricane zone job?
Hurricane compliance is an available option on the QDB200 series, carrying a Miami-Dade N.O.A. Exposed trim is stainless steel with an iron forged cylinder guard, and the body includes two ball bearings and a free-spinning cylinder collar to resist drilling and wrench attack.
19) Is there a lighter duty alternative to the QDB284 for interior or low traffic doors?
Yes. The QDB284 is a Grade 2 commercial deadbolt. If the opening does not need Grade 2, the Cal-Royal ED500 Grade 3 single cylinder deadbolt with adjustable backset and the Cal-Royal LSD Grade 3 with ADA ergonomic thumbturn both cover 1-3/8 inch to 1-3/4 inch doors, and the Callan Model 200S is a Grade 3 single cylinder with square trim. These carry a lower ANSI/BHMA grade than the QDB284, so check any spec on the drawing before substituting.
20) Is there an electronic deadbolt I can use on doors where I am currently specifying the QDB284?
The QDB284 is a mechanical key and turn deadbolt. For credential-based access on similar doors, the Dormakaba Saffire LX-D is an RFID electronic deadbolt with BLE and electronic lock override, the Nova-D is an RFID multihousing smart electronic deadbolt, and the Delaney KP400 is a Grade 2 electronic deadbolt with a programmable remote. The Codelocks CL2210 is an electronic mortise deadbolt, which changes the door prep from the QDB284's bored preparation.
21) The QDB284 comes in square and round faceplate corners - which competing deadbolts let me match trim shape across a building?
The QDB284 is offered with square or round faceplate corners across five finishes from 605 bright brass to 626 satin chrome. If you are matching exterior trim shape instead, Bravura offers the 310B Elite traditional round, the 310RC Elite contemporary round, the 310SC Elite contemporary square, and a rectangle deadbolt, all Grade 2 cylinder by thumbturn. Brinks offers the Raleigh E2401 transitional round and the Mendocino E2402 contemporary square, both with a 4-way adjustable backset.
22) We pair the QDB284 with a separate cylindrical lock - is there a single unit that does both?
The QDB284 is an auxiliary deadbolt commonly installed alongside a cylindrical lock for a second layer of security. If you would rather install one assembly, the Falcon H2101 in the H2 Series is a Grade 2 entrance interconnected lock that combines the latch and a single cylinder deadbolt in one unit. The Baldwin Estates 8011 is a 1-5/8 inch double cylinder deadbolt in an entrance function for a more decorative opening.
23) Can staff tell from outside whether the door is locked?
An indicator version is available in the QDB200 line that shows locked or unlocked from the exterior. That is why these turn up on rest stop and state park restrooms, where people need to see occupancy without trying the door.
24) Can I standardize finishes across a building with these deadbolts?
Five finishes run across both backsets and both faceplate corner styles: 605 bright brass, 613 oil rubbed bronze, 619 satin nickel, 625 bright chrome, and 626 satin chrome. 626 satin chrome is the usual commercial default and pairs with most Grade 1 and 2 lever locks already in a building.
How fast can I get the Stanley Security QDB284-626-S4-DBS delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Stanley Security QDB284-626-S4-DBS come with a warranty?
Absolutely. The Stanley Security QDB284-626-S4-DBS is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Stanley Security QDB284-626-S4-DBS?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Stanley Security QDB284-626-S4-DBS from ZenSupply?
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