Kwikset 258SQT SMC Downtown Lo...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$90.40
$44.41
Kwikset Kwikset 258SQT SMC Downtown Low Profile Single Cylinder Deadbolt with SC1 Keyway SmartKey KWI-258SQT-SMC

Kwikset 258SQT SMC Downtown Low Profile Single Cylinder Deadbolt with SC1 Keyway SmartKey

(No reviews yet) Write a Review

Model: 258SQT-15SMC
$90.40
$44.41
Selected Finish is
Selected FREE KEYING Options is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$90.40
$44.41
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

KWIKSET 258SQT SMC DOWNTOWN DEADBOLT OVERVIEW

258SQT Downtown low profile single cylinder deadbolt. Deadbolt operated by key outside and thumb turn inside.

Protect your home with both designer style and superior security with the 258SQT Downtown Deadbolt from Kwikset Signature Series™ product. Perfect for exterior doors where keyed entry and security is essential. Featuring SmartKey Security™, this lock protects against advanced break-in techniques and allows you to re-key your lock yourself in just seconds. Compatible with Kwikset (KW1) keyway or (SC1) keyway options, this deadbolt is operated by a key outside and a thumb turn inside. It comes with two keys and has two interchangeable faceplates - round corner and square corner. This deadbolt is certified as the highest residential security, durability, and finish with ANSI/BHMA Grade 1 certification. The latch is adjustable to fit all standard door preparations from 2-3/8" to 2-3/4". The full lip round deadbolt strike and 1-inch deadbolt throw provide an additional level of security. The locking mechanism functions with a turn piece on the interior of the lock. You can easily install this deadbolt in minutes with just a screwdriver, and it comes with a lifetime mechanical and finish warranty.

Buy this Kwikset Signature Series™ Downtown Deadbolt today for a stylish and secure solution for your home interior doors!

DOWNTOWN DEADBOLT PRODUCT FEATURES

  • Designer style and superior security with this Kwikset Signature Series™ product
  • For use on exterior doors where keyed entry and security is needed
  • Featuring SmartKey Security™, which protects against advanced break-in techniques and allows you to re-key your lock yourself in seconds.
  • SmartKey Security™ re-key technology is compatible with Kwikset (KW1) keyway or (SC1) keyway options
  • Deadbolt operated by key outside and thumb turn inside
  • Comes with 2 keys
  • Deadbolt Latch has 2 interchangeable faceplates - round corner and square corner
  • Certified Highest Residential Security, Durability and Finish - ANSI/BHMA Grade 1
  • Latch has adjustable backset 2-3/8 to 2-3/4 to fit all standard door preparations
  • Includes full lip round deadbolt strike
  • 1 inch deadbolt throw
  • Locking mechanism functions with turn piece on the interior of the lock
  • Easily installs in minutes with just a screwdriver.
  • Lifetime mechanical and finish warranty

COLOR VARIATIONS

Kwikset 258SQT Downtown Low Profile Single Cylinder Deadbolt with SC1 Keyway SmartKey 15SMC (Satin Nickel)
Kwikset 258SQT Downtown Low Profile Single Cylinder Deadbolt with SC1 Keyway SmartKey 26SMC (Polished Chrome)
Kwikset 258SQT Downtown Low Profile Single Cylinder Deadbolt with SC1 Keyway SmartKey 514SMC (Matte Black)

Note: Some concept images shown with item are not included.

DOWNTOWN DEADBOLT COLLECTION

Kwikset 258SQT SMT Downtown Low Profile Single Cylinder Deadbolt with SmartKey
Kwikset 258SQT SMC Downtown Low Profile Single Cylinder Deadbolt with SC1 Keyway SmartKey

RESOURCES & DOWNLOADS

258SQT SMC Downtown Deadbolt Door Installation Guide
Smartkey Instructions

Manufacturer Resources

Product Specs

Series:
Signature Series
Grade:
Grade 1
Warranty:
Limited Lifetime Finish, Limited Lifetime Mechanical
ANSI/BHMA:
ANSI/BHMA Grade 1
Product Group:
Mechanical Locks
Product Subgroup:
Deadbolts
Subcategory:
Deadbolts
Latch Throw:
1"
Keyed Function:
Single Cylinder
Commercial/Residential:
Residential
Keyed:
Yes
UL Listing Type:
Optional UL 1/3 Hour fire rating for all functions (excluding 814SCE)
Lock Function:
Entry/Office
Cylinder and Keyways:
SmartKey Security
Features:
Microban, SmartKey
Product Attribute:
Deadbolts
Standard Strike:
1" - 2-1/4" Round Corner Strike
Backset (Distance):
Adjustable 2-3/8 or 2-3/4
Product Function:
Cylinder x Thumbturn
Product Type:
Deadbolts
Door Thickness Range:
1-3/8" to 1-3/4"
Product Details:
Mechanical
Product Style:
Contemporary
Product Category:
Mechanical Locks
Department:
Door Hardware

Kwikset 258SQT-15SMC – Frequently Asked Questions

1) Will the Kwikset 258SQT Downtown deadbolt fit my existing door prep, or do I have to redrill?
The 258SQT Downtown deadbolt drops into standard door prep. Its latch is adjustable for either a 2-3/8 or 2-3/4 inch backset, which covers both common bore locations, and it fits doors 1-3/8 to 1-3/4 inches thick. No redrilling on a door already bored for a tubular deadbolt.
2) Will the Kwikset 258SQT deadbolt latch into the strike plate already in my frame?
It throws a 1 inch bolt and ships with a full lip round corner strike sized 1 inch by 2-1/4 inches. If the frame already has a standard round corner deadbolt strike with a 1 inch bolt hole, the 258SQT lines up with it. Frames cut for a square corner strike will need the included strike swapped in, or the existing square strike kept and the deadbolt's own square corner faceplate used on the latch.
3) Can I key the Kwikset 258SQT to match the Schlage keys I already carry?
This version of the Downtown deadbolt is supplied with the SC1 keyway, which is the standard Schlage-style residential keyway, so it takes SC1 blanks. SmartKey Security also lets you re-key the cylinder yourself in seconds to an existing SC1 key without pulling the lock apart. Note that Kwikset's SmartKey re-key is keyway specific: an SC1 lock stays SC1, it will not convert to KW1.
4) Can I get a group of these Kwikset Downtown deadbolts keyed alike for a rental property?
Yes. The 258SQT is offered keyed alike or keyed different at no charge, and there is an optional key code field if the units have to match an existing key already in service. For a landlord standardizing a building, keyed alike plus the SmartKey cylinder means you can also re-key any unit yourself after a tenant turnover instead of calling a locksmith.
5) Is a single cylinder deadbolt like the Kwikset 258SQT the right choice for a door with glass next to it?
For a door with sidelites or glass within arm's reach of the bolt, a single cylinder is the weaker choice. The 258SQT is key outside, thumbturn inside, so anyone who breaks the glass can reach the turn. On those openings use a double cylinder, which needs a key on both sides: the Baldwin Reserve Double Cylinder Contemporary Square Deadbolt or Round Deadbolt in the same contemporary look, or the Grade 1 Dexter DB1000 Series double cylinder for a plainer version. Check your local code first, some jurisdictions restrict double cylinders on egress doors.
6) Is the Kwikset 258SQT Downtown deadbolt strong enough for an apartment or commercial entry door?
The Downtown 258SQT carries ANSI/BHMA Grade 1 certification for security, durability and finish, which is the top residential rating, and it throws a full 1 inch bolt. It is catalogued as a residential lock though. For a commercial opening in a spec-driven job, a commercial Grade 1 deadbolt such as the Design Hardware D1 Series or the Corbin Russwin DL3000 Series cylindrical deadlock is the closer fit.
7) What is a Grade 1 single cylinder deadbolt equivalent to the Kwikset 258SQT Downtown?
The Dexter DB1000 Series single cylinder deadbolt is a close match on the two specs that matter for a swap: it is a Grade 1 cylinder x thumbturn deadbolt, and it fits doors 1-3/8 inch to 1-7/8 inch, which covers the 1-3/8 inch to 1-3/4 inch range the 258SQT works in. The Accentra D111 is another Grade 1 cylinder x thumbturn deadbolt with the same 1-3/8 inch to 1-3/4 inch door thickness range, though it is fixed at a 2-3/8 inch backset where the 258SQT latch adjusts to 2-3/8 or 2-3/4. If the door is already bored on 2-3/4, the D111 will not reach.
8) Which Grade 1 deadbolt should I spec for a classroom door instead of the residential 258SQT?
The Kwikset 258SQT Downtown is certified Grade 1 but built for residential use. For a classroom opening, the Falcon D111 is a Grade 1 heavy duty classroom deadbolt, cylinder x thumbturn, with an adjustable backset like the 258SQT. The Hager 3118 is a Grade 1 classroom deadbolt with a Schlage C keyway and 6-pin cylinder for doors 1-3/8 inch to 1-3/4 inch. If a Grade 2 classroom deadbolt meets the spec, the Falcon D211 is the medium duty version of the same function.
9) I need a deadbolt that keys on both sides for a door with glass next to it - what replaces the Downtown 258SQT?
The 258SQT Downtown is single cylinder, key outside and thumbturn inside, so it is not the part for an opening where the thumbturn is reachable through glass. The Dexter DB1000 Series double cylinder deadbolt keeps the Grade 1 rating and fits doors 1-3/8 inch to 1-7/8 inch. The Design Hardware D1 Series is a Grade 1 extra heavy duty double cylinder deadbolt for 1-3/4 inch doors. The Hager 3214 is a Grade 2 double cylinder deadbolt with a Schlage C keyway for 1-3/8 inch to 1-3/4 inch doors. Confirm your local egress code permits a double cylinder on the opening before ordering.
10) Which deadbolt takes a small format interchangeable core instead of a fixed cylinder like the 258SQT?
The 258SQT Downtown uses a SmartKey Security cylinder, which is re-keyed at the lock rather than by pulling a core. For a keying system built on interchangeable cores, the Arrow E61 26D IC is a Grade 2 single cylinder deadlock supplied SFIC prep less core, fitting doors 1-3/8 inch to 1-3/4 inch. The Deltana CL200LAIC is a Grade 2 cylinder x thumbturn single deadbolt with an interchangeable core, furnished without the cylinder, on a 2-3/4 inch backset. The Delaney LM Series is a Grade 1 single cylinder less core deadbolt, cylinder x thumbturn, in dull chrome US26D. All three ship without a core, so the core has to be ordered and pinned to your system.
11) What looks like a deadbolt substitute for the 258SQT but will not install in the same door prep?
Several parts in the deadbolt family will not drop into a standard bored deadbolt hole. The Emtek 2050 and 2051 are European mortise deadbolts with an integrated roller latch, which require a mortise pocket rather than a bore. The Codelocks CL200 is a surface deadbolt with key override and the CL2200 is an electronic surface deadbolt, both mounted on the face of the door. The Arrow 460 is not a lock at all - it is a mortise lock strike with a straight lip. The Baldwin 8BR0618001 is a deadbolt spacer, and the BEST 8T is a tubular deadbolt tube component, both parts of an assembly rather than a complete lock. The 258SQT Downtown is a bored single cylinder deadbolt with an adjustable 2-3/8 or 2-3/4 backset latch.
12) I need a deadbolt with no key cylinder on the outside for an exit door - what do I order instead of the 258SQT?
The 258SQT Downtown is keyed, with a key outside and thumbturn inside. For an exit door that should never be opened from the outside, the Arrow E60 is a Grade 2 non-keyed exit deadlock with a blank plate outside and a thumbturn inside, fitting doors 1-3/8 inch to 1-3/4 inch - the same door thickness range the 258SQT covers. For a door where only one face gets bored, the Callan Model 205S is a Grade 3 one-sided half-bore deadbolt.
13) I am standardizing a building on Schlage C keyway - what deadbolt matches the 258SQT function on that keyway?
The 258SQT Downtown uses a SmartKey Security cylinder and is offered in the SC1 keyway. If you want a factory Schlage C keyway deadbolt in the same cylinder x thumbturn function, the Hager 3215 is a single cylinder deadbolt with a 1 inch throw, Grade 2, for doors 1-3/8 inch to 1-3/4 inch - the same 1 inch throw the 258SQT provides. The Hager 3115 is a Grade 2 cylinder x thumbturn deadbolt with a Schlage C keyway over the same door range, and the Hager 3118 steps that up to Grade 1 with a 6-pin cylinder. The Dormakaba D900 small case mortise deadbolt is also offered with SC keyways, keyed different, if the opening is mortise prepped rather than bored.
14) What deadbolt fits a door thicker than 1-3/4 inch, which the 258SQT does not cover?
The Kwikset 258SQT Downtown is built for doors 1-3/8 inch to 1-3/4 inch. For a thicker door, the Corbin Russwin DL3011 Grade 1 cylindrical deadlock covers 1-3/4 inch to 2-1/4 inch. The Deltana 7312KA2 is a Grade 3 double cylinder deadbolt covering 1-3/8 inch to 2 inch. Note the DL3011 is a cylinder x blank configuration, so there is no thumbturn on the inside face the way the 258SQT has.
15) Do I have to know whether my door has a round corner or square corner latch faceplate before ordering this Kwikset deadbolt?
No. The Downtown 258SQT latch ships with two interchangeable faceplates, round corner and square corner, so it matches whichever mortise is already routed into the door edge. You pick the one that fits when you install.
16) What finishes does the Kwikset 258SQT Downtown deadbolt come in, and will it match my other door hardware?
Three finishes: 619 satin nickel, 625 polished chrome, and 622 matte black. Those are the full set for the Downtown 258SQT, so if the rest of the opening is oil rubbed bronze or antique brass this is not the trim that will match it. The Downtown body is a square, low profile contemporary shape, which pairs with modern lever and knob trim rather than traditional colonial styling.
17) Is this Kwikset deadbolt SmartKey or does it need a locksmith to re-key?
SmartKey Security is built into the 258SQT cylinder. You re-key it yourself in seconds with the learn tool and the new key, no disassembly, no pinning kit, no locksmith visit. That is the practical reason property managers buy it over a standard pin tumbler deadbolt: turnover re-keys become a two minute job at the door. The cylinder also resists bumping and picking attacks.
18) What is the difference between the Kwikset 258SQT and a Grade 2 deadbolt like the Arrow DBX61 or Bravura 310SC?
Grade is the short answer. The Downtown 258SQT is Grade 1, the top ANSI/BHMA residential rating for security, durability and finish. The Arrow DBX61, the Bravura 310SC Elite contemporary square deadbolt, and the Cal-Royal CB160 are all Grade 2 single cylinder deadbolts, cylinder by thumbturn like the Kwikset. If the opening is a low traffic interior or secondary door, Grade 2 is usually enough. For a front entry, or anywhere the bolt gets thrown several times a day, Grade 1 is the one that holds up. The 258SQT is also the only one of those with owner re-keyable SmartKey cylinder.
19) What is the equivalent of the Kwikset 258SQT in a square contemporary trim from another brand?
The 258SQT Downtown is a contemporary style deadbolt supplied with two interchangeable faceplates, round corner and square corner. For square trim from other brands, the Bravura 310SC Elite is a Grade 2 contemporary square deadbolt, cylinder x thumbturn, and the Brinks Mendocino E2402 is a contemporary square single cylinder deadbolt with a 4-way adjustable backset. For round contemporary trim, the Bravura 310RC Elite is a Grade 2 contemporary round deadbolt and the Brinks Raleigh E2401 is a transitional round single cylinder deadbolt, also with a 4-way adjustable backset.
20) Is there a lighter duty single cylinder deadbolt than the Kwikset 258SQT for interior or low traffic doors?
Yes. The Cal-Royal ED500 is a Grade 3 single cylinder cylinder x thumbturn deadbolt with an adjustable backset and the same 1-3/8 inch to 1-3/4 inch door thickness range as the 258SQT Downtown, which is Grade 1. The Cal-Royal LSD is also Grade 3 cylinder x thumbturn over 1-3/8 inch to 1-3/4 inch and carries an ADA ergonomic thumbturn, which matters if the turn piece has to be operable without tight grasping. Between those and the Grade 1 258SQT sits the Dexter DB2000 Series single cylinder at Grade 2, also 1-3/8 inch to 1-3/4 inch.
21) Does the Arrow DBX61 work as a substitute for the Kwikset 258SQT Downtown deadbolt?
It is the same function but not the same rating. The Arrow DBX61 is a Grade 2 single cylinder deadbolt, cylinder x thumbturn, while the Kwikset 258SQT Downtown is Grade 1. If the specification calls out ANSI/BHMA Grade 1, the DBX61 will not satisfy it. Grade 1 alternatives with the same cylinder x thumbturn function include the Accentra D111 and the Deltana CL200LM.
22) Can I swap the Kwikset 258SQT for a keypad or electronic deadbolt on the same door?
There are electronic deadbolts in the same bored deadbolt family. The Delaney KP400 is a Grade 2 electronic deadbolt with a programmable remote, one grade below the Grade 1 258SQT Downtown. For multi-housing credential systems, the Dormakaba Saffire LX-D is an RFID electronic deadbolt with BLE and electronic lock override, and the Dormakaba Nova-D is an RFID multihousing smart electronic deadbolt. The trade is that the 258SQT is a mechanical lock with no power or credential system behind it, and it re-keys in seconds with SmartKey.
23) I want one lock that handles both the latch and the deadbolt instead of adding a separate deadbolt - what is the option?
The Kwikset 258SQT Downtown is a deadbolt only, cylinder x thumbturn, so the door still needs a separate knob or lever for latching. The Falcon H2101 is an entrance interconnected lock that combines a single cylinder deadbolt with the latching trim in one Grade 2 assembly, which retires the second bore hole and lets the occupant retract both with one motion. The Baldwin Estates 8011 is a 1-5/8 inch contemporary double cylinder deadbolt in an entrance function if you prefer to keep the deadbolt separate but want the heavier Estate Series trim.
24) What tools do I need to install a Kwikset Downtown 258SQT deadbolt, and how many keys come with it?
A screwdriver is all it takes on a door that is already bored, and the deadbolt comes with two keys. The kit includes the adjustable latch with both faceplates and the full lip round strike, so the only thing you supply is the fastener for the strike if your frame needs longer screws into the stud.
How fast can I get the Kwikset 258SQT-15SMC 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 Kwikset 258SQT-15SMC come with a warranty?
Absolutely. The Kwikset 258SQT-15SMC 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 Kwikset 258SQT-15SMC?
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 Kwikset 258SQT-15SMC from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!