Dormakaba QDB180 Grade 1 Heavy...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$208.00
$128.04
Dormakaba QDB180 Grade 1 Heavy Duty Auxiliary Deadbolt, Single Cylinder

Dormakaba QDB180 Grade 1 Heavy Duty Auxiliary Deadbolt, Single Cylinder

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Model: QDB180-626-S4-DBS-SC
$208.00
$128.04
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$208.00
$128.04
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Dormakaba QDB100 Deadbolt Lock

The QDB100 line of Grade 1 deadbolts provides strength, durability, and reliability for high security applications. We designed the QDB100 series with solid forged housing for added strength and performance life, and then added anti-drill and saw-resistant features to deliver even greater security for a long-lasting, reliable deadbolt solution.

Features

  • Built for durability and security
    • Solid forged housing, full 1” steel throw bolt with hardened steel roller pin for saw resistance, and anti-drill design with two ball bearings for drill resistance on non-IC cylinders are just a few of the heavy-duty security features we built into our QDB100 series.
  • Backed by a leading warranty
    • The QDB100 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 QDB100 series products. Standard door prep makes retrofit quick and easy.
  • Simple to install
    • Compartmentalized packaging makes QDB100 deadbolts easier to install.
  • 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 QDB100 series deadbolts are available for immediate shipment

Certifications:

  • ANSI/BHMA A156.5 Series—Grade 1
  • 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
  • California State Reference Code (formerly Title 19 – Fire Marshal) Hurricane Compliant – Miami DADA N.O.A.
  • ADA compliant thumb turn

Product Specifications:

  • Exposed trim: solid forged brass, plated to match finish designation
  • 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

Keying:

  • 6-pin non-IC brass cylinders
  • 6- or 7-pin SFIC option available
  • Two keys per lockset
  • Keying options include: master keying, grand master keying, construction keying Keyway options include: BF-SFIC “F”, KW-Kwikset, WE-Weiser, SC-Schlage, GA-Yale, LA-Sargent, LC-Less Cylinder

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:
QDB100 Series
Product Subgroup:
Bored Locksets
Product Type:
Deadbolts
Subcategory:
Mechanical Door Locks
Commercial/Residential:
Commercial
Standard Strike:
1-1/8" x 2-3/4", Square Corner
Grade:
Grade 1
Duty Level:
Heavy Duty
Product Attribute:
Deadbolts
Product Function:
Cylinder x Thumbturn
Face Plate:
1 -1/8" x 2 -1/4"
Product Category:
Mechanical Locks
Department:
Door Hardware

Dormakaba QDB180-626-S4-DBS-SC – Frequently Asked Questions

1) Is the Dormakaba QDB180 deadbolt fire rated for a labeled door?
It's UL/cUL listed for 3 hours on "A" label single door applications up to 4 by 8 feet, positive pressure rated to UL10C/UBC 7-2 (1997), and also UL10B rated. It carries ANSI/BHMA A156.5 Grade 1 and meets ANSI A117.1 accessibility, with an ADA compliant thumbturn. There's also California State Reference Code (formerly Title 19) recognition and Miami-Dade N.O.A. hurricane compliance on the applicable options.
2) What backset and cross bore does the Dormakaba QDB180 need, and will it drop into an existing deadbolt prep?
Standard door prep, so most existing deadbolt holes take it. The cross bore is 2-1/8 inches (54mm) diameter, the backset is 2-3/4 inches (70mm) square as standard with 2-3/8 inches (60mm) also orderable, and the latch faceplate is 1-1/8 x 2-1/4 inches. Both backsets are stocked, so measure from the door edge to the center of the existing bore and order to match rather than redrilling.
3) Will the QDB180 deadbolt latch into the strike already in my frame?
The bolt throws a full 1 inch (25.4mm) and the supplied strike is the standard 1-1/8 x 2-3/4 inch square corner deadbolt strike. If your frame already has that common strike cutout, the bolt lines up and a 1 inch throw gives plenty of engagement into the jamb. Frames prepped for a different strike size will need the existing strike swapped or the prep opened; other strike options are available.
4) Can I use my existing small format interchangeable cores with the Dormakaba QDB180?
Yes. The SFIC version is prepped for 6- or 7-pin small format cores and ships without a core, so you drop in the cores you already key. If you'd rather not run SFIC, the conventional version comes with a 6-pin brass cylinder in the Schlage C keyway, and a less-cylinder version is available if your locksmith is supplying the cylinder. One note for security spec: the anti-drill design with two ball bearings applies to the non-IC cylinders.
5) Is the QDB180 a lock on its own or does it go with a knob or lever?
It's an auxiliary deadbolt, keyed outside and thumbturn inside, with no latch and no handle. It's normally installed above a cylindrical knob or lever lockset to add a second, stronger point of security on the same door. If you need a deadbolt as the only lock on the opening, that works too, but there's no latching function, so the door won't stay closed on its own. If you need a keyed deadbolt with a blank plate inside instead of a thumbturn, the Corbin Russwin DL3011 is a Grade 1 cylinder x blank deadlock.
6) What is the closest Grade 1 single cylinder deadbolt to the Dormakaba QDB180?
The Accentra D111 is the nearest straight equivalent: it is a Grade 1 single cylinder deadbolt in cylinder x thumbturn function, the same function the QDB180 carries, and it is built on the D Series with a 2-3/8 inch backset. The QDB180 is offered in both 2-3/4 inch and 2-3/8 inch backsets, so if the door is already bored at 2-3/4 inch the Dormakaba covers that prep directly while the Accentra D111 matches the 2-3/8 inch bore. Falcon's D111 is another Grade 1 cylinder x thumbturn deadbolt in the D100 Series, rated heavy duty like the QDB180.
7) What should I use instead of the QDB180 when the opening needs a key on both sides?
The QDB180 is a single cylinder deadbolt, cylinder outside and thumbturn inside, so it will not key from both faces. For a double cylinder opening, the Design Hardware D1 Series is a Grade 1 double cylinder deadbolt rated extra heavy duty for 1-3/4 inch doors, and the Dexter DB1000 is a Grade 1 double cylinder deadbolt covering 1-3/8 inch to 1-7/8 inch doors. At Grade 2 the Dexter DB2000 double cylinder covers 1-3/8 inch to 1-3/4 inch doors and the Delaney LU Series double cylinder comes in a stainless steel US32D finish. Check local egress code before specifying double cylinder on an exit door.
8) What is the difference between the Dormakaba QDB180 and the Corbin Russwin DL3011?
Both are Grade 1 deadbolts, but they answer different openings. The QDB180 is cylinder x thumbturn, so the inside always turns free by hand. The Corbin Russwin DL3011 is a cylindrical deadlock in cylinder x blank configuration, meaning there is no thumbturn on the inside face, and it fits doors 1-3/4 inch to 2-1/4 inch. The DL3211 is the same cylinder x blank arrangement built for 1-3/4 inch doors. If the room needs a thumbturn for occupant egress, the cylinder x blank deadlocks are not a substitute.
9) Which deadbolt takes a small format interchangeable core if I do not want the QDB180 conventional cylinder?
The QDB180 itself is offered in an SFIC cylinder version with no core included, alongside the conventional Schlage C keyway and less cylinder options. If a different brand is needed, the Arrow E61 is a Grade 2 single cylinder deadlock prepped for SFIC less core, covering 1-3/8 inch to 1-3/4 inch doors, and the Deltana CL200LAIC is a Grade 2 single cylinder deadbolt for interchangeable core with a 2-3/4 inch backset. Delaney's LM Series is a Grade 1 single cylinder less core deadbolt in dull chrome US26D.
10) I need a deadbolt on a Schlage C keyway to match my existing keying - what are my options besides the QDB180?
The QDB180 conventional cylinder version is built on the Schlage C keyway. Hager's 3115 is a Grade 2 cylinder x thumbturn deadbolt on the Schlage C keyway for 1-3/8 inch to 1-3/4 inch doors, and the Hager 3118 is a Grade 1 classroom deadbolt on the Schlage C keyway with a 6-pin cylinder over the same door range. Both Hager units carry a fire rating. For a keyed-both-sides variation on the same keyway, the Hager 3214 is a Grade 2 double cylinder.
11) What is the equivalent of the QDB180 for a door that needs to lock from the inside only, with no key?
The QDB180 always has a keyed cylinder on one face. Where no key is wanted, the Arrow E60 is a Grade 2 exit deadlock, non-keyed, in blank plate x thumbturn function for 1-3/8 inch to 1-3/4 inch doors - the outside face is a blank plate and the bolt throws only from the thumbturn side. The Callan Model 205S is a Grade 3 one-sided half-bore deadbolt, which suits a door where only one face is worked.
12) What Grade 1 deadbolts besides the Dormakaba QDB180 carry a UL 3-hour fire rating?
The Cal-Royal CRB800 is a Grade 1 heavy duty single cylinder deadbolt with a UL 3-hour fire rated latch, in cylinder x thumbturn function on the CRB800 Series. The QDB180 is UL/cUL listed 3-hour for A label single door applications up to 4 feet by 8 feet, positive pressure rated to UL10C/UBC 7-2. Both are cylinder x thumbturn, so on a labeled opening either function matches; confirm the door manufacturer's label allows the prep.
13) My door is thicker than 1-3/4 inch - which deadbolt fits if the QDB180 does not?
The QDB180 covers 1-3/8 inch through 2 inch doors, with service part 8Q00082 spacer rings required at 1-3/8 inch. If the door is heavier than that, the Corbin Russwin DL3011 Grade 1 cylindrical deadlock fits 1-3/4 inch to 2-1/4 inch, though it is a cylinder x blank deadlock with no inside thumbturn. The Deltana 7312KA2 is a Grade 3 double cylinder deadbolt covering 1-3/8 inch to 2 inch. Peers such as the Dexter DB1000 stop at 1-7/8 inch and the Accentra D111 at 1-3/4 inch.
14) Which deadbolt has an adjustable backset if I do not know the bore on my door?
The QDB180 is ordered with the backset fixed at either 2-3/4 inch or 2-3/8 inch, so the bore has to be confirmed first. If it cannot be, the Falcon D111 is a Grade 1 heavy duty cylinder x thumbturn deadbolt with an adjustable backset. The Cal-Royal ED500 is a Grade 3 single cylinder deadbolt with adjustable backset for 1-3/8 inch to 1-3/4 inch doors, and the Brinks Raleigh and Mendocino deadbolts use a 4-way adjustable backset in round and square trim.
15) What do I have to specify when ordering a QDB180 deadbolt?
Four choices plus keying. Backset (2-3/4 or 2-3/8 inches), cylinder type (conventional Schlage C keyway, SFIC less core, or less cylinder), faceplate corners (square or round, to match the existing mortise in the door edge), and finish. Keying is a separate required selection: keyed different, keyed alike for a group of locks, or none when you're going less cylinder. Master keying, grand master keying and construction keying are all available, and each lockset comes with two keys.
16) Can I key several QDB180 deadbolts alike across a building?
Yes. Keyed alike is a standard ordering option, so a run of units for one property comes on a single key, and master keying and grand master keying are supported if you need a building or portfolio hierarchy. Construction keying is available for jobs where trades need access before turnover. On the conventional cylinder the keyway is Schlage C, so it drops into a Schlage-keyed system; on SFIC you supply your own cores and the existing system carries over.
17) Do I need a Grade 1 auxiliary deadbolt or is a Grade 2 enough?
Grade 1 is the specification for high-security and high-traffic commercial openings, and the QDB180 carries it under ANSI/BHMA A156.5 with heavy duty construction, a solid forged housing and a hardened steel roller pin in the bolt for saw resistance. For lighter commercial or interior duty, ZenSupply carries Grade 2 single cylinder deadbolts such as the Arrow DBX61 and the Cal-Royal CB160, and Grade 3 options like the Cal-Royal LSD. Where the opening is a storefront or a tenant entry that gets attacked, stay Grade 1.
18) What is the closest alternative to the Dormakaba QDB180 from another brand?
For a straight Grade 1 single cylinder swap, the Accentra D111 and the Falcon D111 are both Grade 1 cylinder x thumbturn deadbolts, the Accentra with a 2-3/8 inch backset and the Falcon with an adjustable backset. The Dexter DB1000 single cylinder is Grade 1 covering 1-3/8 to 1-7/8 inch doors. The Delaney LM Series is a Grade 1 less-core version if you are supplying your own cylinder. Where the QDB180 pulls ahead is door range: it goes to 2 inches, and its 1 inch throw and 2-1/8 inch cross bore are stated outright.
19) Is a single cylinder deadbolt OK on a glass entry door, or do I need a double cylinder?
A single cylinder deadbolt like the QDB180 has a thumbturn inside, so anyone who can reach through broken or adjacent glass can throw it open. On glass-front and sidelight openings buyers often go double cylinder, keyed both sides, which ZenSupply carries in Grade 1 as the Design Hardware D1 Series (1-3/4 inch doors) and the Dexter DB1000 double cylinder (1-3/8 to 1-7/8 inch). Note that keyed-both-sides hardware is restricted on egress doors in many jurisdictions, so check your local code before specifying it. The QDB180 thumbturn is ADA compliant, which the double cylinder route gives up.
20) Is there a lighter duty deadbolt than the Dormakaba QDB180 for an interior or low traffic door?
Yes. The Dexter DB2000 single cylinder deadbolt is Grade 2 in cylinder x thumbturn function and fits doors 1-3/8 inch to 1-3/4 inch. The Arrow DBX61 is a Grade 2 single cylinder deadbolt in the DBX Series with the same cylinder x thumbturn function. The Cal-Royal CB160 is Grade 2 as well and adds a tamper-resistant cylinder guard. The QDB180 is Grade 1 heavy duty, so on an opening where the specification calls for Grade 1 these Grade 2 options will not satisfy it.
21) Will a Codelocks CL200 replace a Dormakaba QDB180?
Not on the same prep. The QDB180 is a bored deadbolt that goes through a 2-1/8 inch cross bore with a 1-1/8 inch by 2-3/4 inch square corner strike. The Codelocks CL200 is a surface deadbolt with key override, rated light duty, and it mounts to the door face rather than through a cross bore. The CL2200 is the electronic surface deadbolt in that same family, rated medium duty. Those are code-entry retrofits for a door you do not want to bore, not a Grade 1 replacement for a bored heavy duty deadbolt.
22) Is the Arrow 460 strike a replacement for the QDB180 strike?
No. The QDB180 ships with a standard deadbolt strike measuring 1-1/8 inch by 2-3/4 inch with square corners, sized for a bored deadbolt. The Arrow 460 is a mortise lock strike for latchbolt and deadbolt functions with a straight lip, built for 1-3/4 inch doors and for a mortise lock body - a different frame prep entirely. Order a deadbolt strike, not a mortise strike, when replacing the QDB180 hardware.
23) What do I use instead of the QDB180 if the deadbolt has to release from an access control system?
The QDB180 is a mechanical deadbolt operated by key outside and thumbturn inside, with no electrical connection. For an electrically controlled bolt, the DynaLock 1300 Series is a heavy duty mortise electric deadbolt. The Codelocks CL2210 is an electronic mortise deadbolt and the CL2200 is an electronic surface deadbolt in brushed steel, both code-entry rather than wired release. The Delaney KP400 is a Grade 2 electronic deadbolt with a programmable remote.
24) Which other Grade 1 deadbolt should I look at if I am standardizing a whole building on one single cylinder unit?
Alongside the Dormakaba QDB180, the Grade 1 cylinder x thumbturn single cylinder options are the Accentra D111 in the D Series, the Falcon D111 in the D100 Series rated heavy duty, the Deltana CL200LM, and the Delaney LM Series in a less core configuration with dull chrome US26D finish. The QDB180 spans five finishes and both round and square face plate corners, which matters when existing door preps across a facility are not consistent.
25) What finishes does the Dormakaba QDB100 deadbolt come in, and will they match my other door hardware?
Five: 605 bright brass, 613 oil rubbed bronze, 619 satin nickel, 625 bright chrome and 626 satin chrome. Those are BHMA finish numbers, so if your existing levers and closers are specified by number you can match exactly rather than by eye. The exposed trim is solid forged brass plated to the finish designation, not a plated zinc casting, which is part of why it holds up on high-traffic openings.
26) I need a deadbolt for a coastal building with a hurricane requirement, does the Dormakaba QDB100 qualify?
Options within the QDB100 series carry Miami-Dade N.O.A. hurricane compliance, listed alongside its California State Reference Code (formerly Title 19, Fire Marshal) recognition. Hurricane compliance is an available option rather than a blanket property of every configuration, so specify it as part of the order. The 1 inch throw bolt and solid forged housing are the same across the series.
27) What is a good residential-style alternative to the QDB180 for a decorative opening?
The QDB180 is a commercial deadbolt with solid forged brass exposed trim in bright brass, oil rubbed bronze, satin nickel, bright chrome and satin chrome. Where the look drives the choice, the Emtek #11 Tuscany is a lost wax cast bronze deadbolt in cylinder x thumbturn function, and the Baldwin Estates 8011 is a contemporary 1-5/8 inch double cylinder deadbolt. Bravura's 310RC Elite and 310SC Elite are Grade 2 cylinder x thumbturn deadbolts in contemporary round and square trim. These trade the Grade 1 heavy duty construction of the QDB180 for decorative styling.
How fast can I get the Dormakaba QDB180-626-S4-DBS-SC 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 Dormakaba QDB180-626-S4-DBS-SC come with a warranty?
Absolutely. The Dormakaba QDB180-626-S4-DBS-SC 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 Dormakaba QDB180-626-S4-DBS-SC?
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 Dormakaba QDB180-626-S4-DBS-SC from ZenSupply?
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