Emtek 8478 Quincy Deadbolt - C...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$128.00
$102.40
Emtek Emtek 8478 Quincy Deadbolt - Classic Brass - Single Cylinder EMTEK-8478

Emtek 8478 Quincy Deadbolt - Classic Brass - Single Cylinder

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Model: 8478-US10B
From the Brass Collection
$128.00
$102.40
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$128.00
$102.40
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Emtek 8478 Quincy Deadbolt - Classic Brass - Single Cylinder

  • Schlage® C Keyway
  • Single Cylinder Deadbolt Includes extension collar for thin doors
  • Standard Door Prep and Installation
  • Solid Brass Cylinder, Housing, Collar, Thumbturn, and Rosette
  • Hardened Steel Bolt
  • Heavy Gauge Steel Understrike
  • Brass Trim Strike Shipped with Every Deadbolt
  • Handing Not Required
  • Standard door thickness of 1-3/4". Specify if thicker. EMPowered™ fits door thickness up to 2-1/4".
  • Standard latch is for 2-3/8” backset. Specify 2-3/4”backset if required.

 

Weiser® (WR5) Keyway

  • Specify by adding “W” to the beginning of product code.
  • No upcharge for cylinder substitution. Can be keyed into existing Weiser® system

 

Specifications:

  • Backset: 2-3/8" or 2-3/4"
  • Cross Bore: 2-1/8"
  • Edge Bore: 1"
  • Door Thickness: 1-3/8" to 2"
  • Keyway: Schlage C
  • Material: Brass

Product Specs

Subcategory:
Deadbolts
Collection:
Brass
Product Type:
Deadbolts
Product Group:
Mechanical Locks
Product Subgroup:
Deadbolts
Commercial/Residential:
Residential
Lock Function:
Deadbolt
Keyed:
Yes
Lock Type:
Tubular
Series:
Quincy
Theme:
American Classic
Electronic:
No
Keyed Function:
Single Cylinder
Handle Type:
Deadbolt
Product Attribute:
Deadbolts
MAP Policy:
Yes
Product Model:
8478
Product Function:
Cylinder x Thumbturn
Product Style:
American Classic
Product Material:
Brass
Product Category:
Mechanical Locks
Product Substrate:
Brass
Department:
Door Hardware

Emtek 8478-US10B – Frequently Asked Questions

1) Will the Emtek 8478 Quincy deadbolt fit a 1-3/8 inch door, and what about a thicker entry door?
The Quincy 8478 covers 1-3/8 inch through 2 inch doors. It ships set up for the standard 1-3/4 inch door and includes an extension collar for thin doors, so a 1-3/8 inch slab is handled out of the box. Above 1-3/4 inches you need to call out the thickness when you order, and the order form has a door thickness field for exactly that.
2) Can the Emtek Quincy deadbolt be keyed alike with my existing Schlage locks?
Yes. The Quincy 8478 ships with a Schlage C keyway cylinder, so it can be keyed into an existing Schlage C system. Keying is selected on the order: keyed different or keyed alike, and there is a field to key to a specific code if you are matching an existing bitting. If your building is on Weiser, order the Weiser WR5 keyway version instead, which is done by putting a W in front of the product code and carries no upcharge.
3) What bore and backset does the Emtek 8478 deadbolt need in the door?
Standard residential prep: 2-1/8 inch cross bore in the face of the door and a 1 inch edge bore. Backset is either 2-3/8 or 2-3/4 inches and you pick one when ordering, so measure from the door edge to the center of the existing bore before you choose. The standard latch is the 2-3/8 inch backset; 2-3/4 has to be called out. Since that is the common tubular deadbolt prep, it drops into most existing deadbolt holes without new boring.
4) Is the Emtek Quincy deadbolt suitable for a commercial building or apartment entry doors?
Emtek classes the Quincy 8478 as residential hardware, and it is a tubular deadbolt in solid brass with a decorative rosette. For single family, condo and light multi-family entries that is the right fit. For a commercial opening or a high-traffic corridor door where a purchasing spec calls out a grade, look at a graded commercial deadbolt instead: the Accentra D111 and the Delaney LM Series are Grade 1 cylinder by thumbturn deadbolts, and the Arrow DBX61 and Cal-Royal CB160 are Grade 2.
5) Will the Emtek Quincy deadbolt work on a 2-1/4 inch thick door?
Not in the standard mechanical version. The 8478 Quincy is built for 1-3/8 to 2 inch doors. Emtek's EMPowered electronic version covers door thickness up to 2-1/4 inches. For a thick commercial slab in that range, the Corbin Russwin DL3011 cylindrical deadlock is rated 1-3/4 to 2-1/4 inches.
6) I am replacing a builder-grade deadbolt on a front door. Will the Emtek Quincy go into the same holes?
In most cases yes. The Quincy takes the standard tubular deadbolt prep, a 2-1/8 inch cross bore and a 1 inch edge bore, which is what a typical builder deadbolt already uses. Confirm your backset first, measure edge of door to center of the bore, then order the 2-3/8 or 2-3/4 to match. The included brass trim strike and steel understrike replace the old jamb hardware, though the jamb mortise for the new strike may need adjusting if the old plate was a different size.
7) What is the closest equivalent to the Emtek 8478 Quincy deadbolt that ships with a Schlage C keyway from another brand?
The Hager 3115 is a cylinder x thumbturn deadbolt built around the Schlage C keyway, the same keyway the Emtek 8478 Quincy uses as standard, so it keys into the same system without a cylinder swap. The Hager 3115 is a Grade 2 deadbolt covering doors 1-3/8 inch to 1-3/4 inch thick and carries a fire rating. The Emtek 8478 covers 1-3/8 inch to 2 inch doors and uses solid brass for the cylinder, housing, collar, thumbturn and rosette. If the requirement is the Schlage C keyway plus a fire rating, the Hager 3115 answers it; if it is decorative solid brass trim on a residential opening, the 8478 does.
8) The Emtek 8478 Quincy is single cylinder - what takes its place on a door with glass beside the lock that needs a key on both sides?
The Emtek 8478 Quincy is a single cylinder deadbolt, cylinder outside and thumbturn inside, so it is not the part for an opening where a thumbturn can be reached through glass. The Hager 3214 is a double cylinder deadbolt with a Schlage C keyway, the same keyway the 8478 uses, covering 1-3/8 inch to 1-3/4 inch doors with a fire rating. The Dexter DB2000 double cylinder deadbolt is Grade 2 and covers the same 1-3/8 inch to 1-3/4 inch range. For a decorative double cylinder, the Baldwin Reserve Double Cylinder Contemporary Round deadbolt is a double cylinder function. Confirm local egress code before specifying key-both-sides on a dwelling exit door.
9) Which deadbolt should be specified instead of the Emtek 8478 Quincy when the job calls for a Grade 1 commercial lock?
The Emtek 8478 Quincy is a residential tubular deadbolt in solid brass. Where a submittal calls for ANSI Grade 1 in the same cylinder x thumbturn function, the Accentra D111 is Grade 1 with a 2-3/8 inch backset covering 1-3/8 inch to 1-3/4 inch doors, the Dexter DB1000 single cylinder is Grade 1 covering 1-3/8 inch to 1-7/8 inch doors, the Deltana CL200LM is a Grade 1 single cylinder, and the Falcon D111 is a Grade 1 heavy duty deadbolt with an adjustable backset. The Delaney LM Series is Grade 1 single cylinder supplied less core for facilities keying to their own cores.
10) The Emtek 8478 Quincy needs the backset chosen at order - what deadbolt handles both 2-3/8 inch and 2-3/4 inch prep without picking one?
The Emtek 8478 Quincy ships with a 2-3/8 inch backset latch as standard and a 2-3/4 inch latch when specified, so the bore has to be measured before ordering. Where the crew is working doors of mixed prep and cannot confirm each one, the Brinks Raleigh Series single cylinder deadbolt has a four-way adjustable backset, the Brinks Mendocino Series offers the same adjustment in a contemporary square trim, and the Cal-Royal ED500 is a Grade 3 single cylinder with an adjustable backset. On the commercial side the Falcon D111 is Grade 1 with an adjustable backset.
11) Will the Emtek 8478 Quincy work on a door thicker than 2 inches, and what should be used if not?
The Emtek 8478 Quincy covers doors 1-3/8 inch to 2 inch thick, with 1-3/4 inch as the standard build and an extension collar included for thin doors. For a thicker door, the Corbin Russwin DL3011 Grade 1 cylindrical deadlock covers 1-3/4 inch to 2-1/4 inch. That is a cylinder by blank deadlock rather than a cylinder by thumbturn, so the inside face has no turn - specify it only where key-only or blind inside operation is intended.
12) Which deadbolts look like substitutes for the Emtek 8478 Quincy but will not drop into the same door prep?
The Emtek 8478 Quincy is a tubular deadbolt using a 2-1/8 inch cross bore and 1 inch edge bore in standard door prep. Several parts carry the word deadbolt but take different prep or a different function. The Dormakaba D900 is a small case mortise deadbolt, which needs a mortise pocket rather than a bored door. The Codelocks CL200 is a surface deadbolt with key override, mounted on the face of the door. The Arrow E60 is a non-keyed exit deadlock, blank plate by thumbturn, so there is no key outside. The Corbin Russwin DL3211 is a cylinder by blank deadlock, no inside thumbturn. The Baldwin Reserve 8BR0618001 is a deadbolt spacer, an accessory rather than a lock, and the BEST 8T is a T Series tubular deadbolt tube component rather than a complete deadbolt.
13) What replaces the Emtek 8478 Quincy on an opening that needs an interchangeable core or a facility's own keying system?
The Emtek 8478 Quincy ships with a Schlage C cylinder as standard, or a Weiser WR5 cylinder at no upcharge so it can be keyed into an existing Weiser system, and it can be ordered keyed alike or keyed different. Where a facility runs its own core program instead, the Deltana CL200LAIC is a Grade 2 single cylinder deadbolt prepped for an interchangeable core with a 2-3/4 inch backset, the Arrow E61 is a Grade 2 single cylinder deadlock with SFIC prep less core for 1-3/8 inch to 1-3/4 inch doors, and the Delaney LM Series is a Grade 1 single cylinder supplied less core.
14) What is the alternative to the Emtek 8478 Quincy when the deadbolt has to carry a fire rating or serve a classroom function?
The Emtek 8478 Quincy is a residential single cylinder deadbolt in cylinder x thumbturn function. For an opening where the schedule calls for a fire rating, the Hager 3215 is a Grade 2 single cylinder deadbolt with a 1 inch throw and a fire rating for 1-3/8 inch to 1-3/4 inch doors, and the Cal-Royal CRB800 is a Grade 1 heavy duty single cylinder deadbolt with a UL 3-hour fire rated latch. Where classroom function is specified, the Hager 3118 is a Grade 1 classroom deadbolt with a Schlage C keyway and a 6-pin cylinder, and the Falcon D211 is a Grade 2 classroom function deadbolt with single cylinder operation.
15) Do I need to specify handing for the Emtek Quincy deadbolt?
No handing required. A deadbolt has no latch bevel and the thumbturn works either way, so the same part goes on a left or right hand door. That also means you can stock one part number across a building instead of splitting inventory by swing.
16) What comes in the box with the Emtek 8478 deadbolt, and do I need to buy a strike separately?
The strike is included. Every Quincy deadbolt ships with a brass trim strike plus a heavy gauge steel understrike that goes behind it into the jamb, along with the extension collar for thin doors. Cylinder, housing, collar, thumbturn and rosette are solid brass and the bolt is hardened steel. Nothing else is required to complete a standard deadbolt install beyond screws in the jamb.
17) Single cylinder or double cylinder deadbolt for a door with glass next to it?
The Emtek 8478 Quincy is single cylinder: key outside, thumbturn inside. That is the right choice for a solid door, and it is what most residential codes want on an egress door because you can get out without a key. If you have glass within reach of the turn and your jurisdiction allows a double cylinder, that is a different part. Emtek's Quincy in this configuration only does cylinder by thumbturn.
18) What finishes does the Emtek 8478 Quincy deadbolt come in, and can I match the rest of my door hardware?
Ten finishes: Oil Rubbed Bronze (US10B), Polished Nickel (US14), Satin Nickel (US15), Pewter (US15A), Flat Black (US19), Polished Chrome (US26), Polished Brass Lifetime (US3), Unlacquered Brass (US3NL), Satin Brass (US4) and French Antique (US7). Every one is offered in both the Schlage C and the Weiser WR5 keyway, so keyway choice does not limit your finish. Unlacquered brass is the one that will patina over time rather than hold its as-shipped look.
19) I need a deadbolt with a 1 inch throw for a commercial job. Does the Emtek Quincy have one?
For a stated 1 inch throw, the Hager 3215 is the one to look at: it is a Grade 2 commercial single cylinder deadbolt with a 1 inch throw, Schlage C keyway, and it fits 1-3/8 to 1-3/4 inch doors. The Emtek Quincy 8478 is a residential brass deadbolt on a Schlage C keyway, so it keys into the same system if you are mixing decorative openings into a commercial building.
20) What is a simpler single cylinder deadbolt than the Emtek 8478 Quincy for rental turns where the brass trim is not the point?
The Emtek 8478 Quincy is built with a solid brass cylinder, housing, collar, thumbturn and rosette in an American Classic style, which is what a landlord pays for on a front entry. Where the door only needs a working bolt, the Dexter DB2000 single cylinder is Grade 2 for 1-3/8 inch to 1-3/4 inch doors, the Bravura 310B Elite is a Grade 2 traditional round deadbolt, and the Cal-Royal CB160 is a Grade 2 single cylinder with a tamper-resistant cylinder guard. For lighter-duty interior or secondary doors, the Cal-Royal ED500 is Grade 3 with an adjustable backset over the same 1-3/8 inch to 1-3/4 inch range.
21) The Emtek 8478 Quincy is a mechanical deadbolt - what is the keypad or credential equivalent for the same door?
The Emtek 8478 Quincy is a non-electronic mechanical deadbolt operated by key outside and thumbturn inside. Where the same opening needs coded or credential access, the Delaney KP400 is a Grade 2 electronic deadbolt with a programmable remote, the Codelocks CL2200 is an electronic surface deadbolt in a brushed steel finish, the Codelocks CL2210 is an electronic mortise deadbolt, and the Dormakaba Saffire LX-D is an RFID electronic deadbolt with BLE and electronic lock override. The Dormakaba Nova-D is an RFID multihousing smart electronic deadbolt for portfolios managing credentials across many units. These take their own prep and power, so the door prep for the 8478 does not carry over unchanged.
22) Is there a deadbolt like the Emtek 8478 Quincy with an easier thumbturn for accessibility, or a one-sided version for a door with no outside key?
The Emtek 8478 Quincy uses a solid brass thumbturn inside and a keyed cylinder outside. Where the inside turn needs to be easier to grip, the Cal-Royal LSD is a Grade 3 single cylinder deadbolt with an ADA ergonomic thumbturn covering 1-3/8 inch to 1-3/4 inch doors. Where the door should have no outside cylinder at all, the Callan Model 205S is a Grade 3 one-sided half-bore deadbolt, and the Arrow E60 is a Grade 2 non-keyed exit deadlock, blank plate by thumbturn, for 1-3/8 inch to 1-3/4 inch doors.
23) What is the closest decorative alternative to the Emtek 8478 Quincy for a high-end entry in a square or contemporary trim?
The Emtek 8478 Quincy is an American Classic style deadbolt with solid brass trim, offered in finishes including Oil Rubbed Bronze US10B, Polished Nickel US14, Unlacquered Brass US3NL and Flat Black US19. For a contemporary or square rose on a comparable entry, the Baldwin Estates 8011 is a contemporary 1-5/8 inch double cylinder deadbolt and the Baldwin Reserve Double Cylinder Contemporary Square deadbolt is a double cylinder in square trim. In single cylinder, the Bravura 310SC Elite is a Grade 2 contemporary square deadbolt and the Bravura 310RC Elite is the contemporary round version. Note the Baldwin options named are double cylinder rather than cylinder x thumbturn.
24) Is the Emtek 8478 a smart lock or keypad deadbolt?
No, the Quincy 8478 is a mechanical key and thumbturn deadbolt with no electronics. If you want code or credential access on the same opening, the Delaney KP400 is a Grade 2 electronic deadbolt with a programmable remote, and the Codelocks CL2200 is an electronic surface deadbolt for medium duty use.
How fast can I get the Emtek 8478-US10B delivered?
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Can I return it if it doesn’t work for me?
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Does the Emtek 8478-US10B come with a warranty?
Absolutely. The Emtek 8478-US10B 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 Emtek 8478-US10B?
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