Kwikset 660SQT-S.FD.DS.LK.2315...
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$32.90
Kwikset 660SQT-S.FD.DS.LK.23155 20 Min UL Rated Single Cylinder Deadbolt SmartKey with RCALFD Latch and Dual RCS and 5303 Full Lip Strike Key Coded

Kwikset 660SQT-S.FD.DS.LK.23155 20 Min UL Rated Single Cylinder Deadbolt SmartKey with RCALFD Latch and Dual RCS and 5303 Full Lip Strike Key Coded

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Model: 660SQT-26S.FD.DS.LK.23155
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Kwikset 660SQT-S.FD.DS.LK.23155 20 Min UL Rated Single Cylinder Deadbolt SmartKey with RCALFD Latch and Dual RCS and 5303 Full Lip Strike Key Coded

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 key outside and thumb turn inside. It comes with two keys and has round corner faceplates. This deadbolt is certified as the highest residential security, durability, and finish with ANSI/BHMA Grade 3 certification. The latch is adjustable to fit all standard door preparations from 2-3/8" to 2-3/4". The round deadbolt strike and 1-inch deadbolt throw provide an additional level of security. You can easily install this deadbolt in minutes with just a screwdriver, and it comes with a lifetime mechanical and finish warranty. This latch is also treated with Microban Antimicrobial product protection, which keeps door hardware 99.9% cleaner than unprotected surfaces.

PRODUCT FEATURES

  • 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 round corner faceplate
  • ANSI/BHMA grade 3 certified
  • Includes round deadbolt strike
  • Latch has adjustable backset 2-3/8"" to 2-3/4"" to fit all standard door preparations
  • 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
  • Microban Antimicrobial product protection keeps door hardware 99.9% cleaner than unprotected surfaces

 

RESOURCES & DOWNLOADS

Kwikset KWI-660SQT-S.FD.DS.LK.23155 20 Min UL Rated Single Cylinder Deadbolt SmartKey with RCALFD Latch and Dual RCS and 5303 Full Lip Strike Key Coded

Manufacturer Resources

Product Specs

Product Group:
Mechanical Locks
Product Subgroup:
Deadbolts
Subcategory:
Deadbolts
Commercial/Residential:
Residential
Product Features:
SmartKey
Product Attribute:
Deadbolts
Product Type:
Deadbolts
Product Category:
Mechanical Locks
Department:
Door Hardware

Kwikset 660SQT-26S.FD.DS.LK.23155 – Frequently Asked Questions

1) Will the Kwikset 660 SQT deadbolt fit my existing door prep, or do I need to drill new holes?
The latch on the 660 SQT is adjustable between a 2-3/8 inch and a 2-3/4 inch backset, so it drops into either of the two standard residential bore preps without redrilling. Installation is a screwdriver job. If your door is bored for a deadbolt already, this goes back in the same hole.
2) Can I key this Kwikset SmartKey deadbolt to match the Schlage keys I already use in my building?
Yes, within limits. SmartKey Security on the 660 SQT lets you re-key the cylinder yourself in seconds, and it accepts either the Kwikset KW1 keyway or the Schlage SC1 keyway. So if your existing units are on SC1, you can bring this deadbolt onto the same key rather than carrying a second key. Property managers standardizing a building on one key normally find this the reason to pick SmartKey over a fixed-keyway cylinder.
3) Is the Kwikset 660 SQT rated for a commercial opening, or is it a residential lock?
It is a residential deadbolt, certified ANSI/BHMA Grade 3, which is the top residential tier for security, durability and finish. For a commercial corridor or a school door you want Grade 1 or Grade 2 instead: the Falcon D111 is a Grade 1 classroom deadbolt and the Arrow DBX61 is a Grade 2 single cylinder. For apartment unit entry doors and single family exteriors, Grade 3 is the normal spec.
4) Will this deadbolt latch into the strike plate that's already in my jamb?
It ships with its own hardware, so plan on swapping the strike. The 660 SQT package includes a round deadbolt strike plus a 5303 full lip strike, and the bolt has a full 1 inch throw. If your jamb is mortised for a round-corner strike, the round one drops in; the full lip strike covers a square mortise and protects the jamb edge. The latch faceplate is round corner.
5) Can this Kwikset 660 be locked with a key from the inside too?
No. The 660 SQT is single cylinder: key on the outside, thumbturn on the inside. That means anyone inside can retract the bolt by hand without a key, which is what most codes want on a dwelling unit egress door. If you specifically need key operation on both sides, for a door with glass beside it, look at a double cylinder unit such as the Callan 210S or the Dexter DB2000 double cylinder.
6) The Kwikset 660 SQT has a 20 minute UL rated latch - what deadbolt carries a longer fire rating?
The Kwikset 660 SQT is a 20 minute UL rated single cylinder deadbolt with a round corner faceplate latch. For a longer rated opening, the Cal-Royal CRB800 is a Grade 1 heavy duty single cylinder deadbolt with a UL 3-hour fire rated latch, cylinder x thumbturn. The Hager 3215 single cylinder deadbolt with 1 inch throw is a fire rated Grade 2 commercial lock for 1-3/8 inch to 1-3/4 inch doors, matching the 1 inch throw of the 660 SQT.
7) What is a Grade 1 alternative to the Kwikset 660 SQT single cylinder deadbolt for a commercial opening?
The Kwikset 660 SQT is an ANSI/BHMA Grade 3 residential single cylinder deadbolt, key outside and thumbturn inside. For a heavier commercial opening, the Dexter DB1000-SCT is a Grade 1 cylinder x thumbturn deadbolt covering 1-3/8 inch to 1-7/8 inch doors, and the Accentra D111 is a Grade 1 cylinder x thumbturn deadbolt with a 2-3/8 inch backset for 1-3/8 inch to 1-3/4 inch doors. Both keep the same single cylinder operation but step up the grade, and neither offers SmartKey re-keying.
8) Which deadbolt should I use instead of the Kwikset 660 SQT when the door needs a key on both sides?
The 660 SQT is a single cylinder deadbolt - key outside, thumbturn inside - so it cannot be keyed on the interior. For double cylinder operation, the Dexter DB2000-DCT is a Grade 2 double cylinder deadbolt for 1-3/8 inch to 1-3/4 inch doors, the Dexter DB1000-DCT is the Grade 1 double cylinder version for 1-3/8 inch to 1-7/8 inch doors, and the Callan Model 210S is a Grade 3 double cylinder deadbolt. Check your local egress code before specifying double cylinder on an exit door.
9) Can I substitute a Kwikset 660 SQT for a deadbolt on a keyed-alike Schlage C system?
The 660 SQT uses SmartKey Security re-key technology and is offered in Kwikset KW1 or Schlage SC1 keyway options, so it re-keys to an SC1 key without a locksmith. If your masterkeyed system is built around a standard Schlage C commercial cylinder instead, the Hager 3115 is a Grade 2 cylinder x 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 a Schlage C keyway and 6-pin cylinder.
10) Which deadbolt takes an interchangeable core instead of the Kwikset 660 SQT SmartKey cylinder?
The 660 SQT ships with a fixed SmartKey cylinder keyed and supplied with two keys, so it does not accept a small format interchangeable core. If your facility standardizes on IC cylinders, the Arrow E61 26D IC is a Grade 2 single cylinder deadlock with SFIC prep supplied less core for 1-3/8 inch to 1-3/4 inch doors, the Deltana CL200LAIC is a Grade 2 single cylinder deadbolt for interchangeable core with a 2-3/4 inch backset, and the Delaney LM Series is a Grade 1 single cylinder less core deadbolt in dull chrome US26D.
11) What looks like a substitute for the Kwikset 660 SQT deadbolt but will not work as one?
Several items in the deadbolt family are not drop-in replacements for a keyed 660 SQT. The Arrow E60 is a Grade 2 exit deadlock that is non-keyed, with a blank plate outside and a thumbturn inside, so there is no key access. The Callan Model 205S is a one-sided half-bore deadbolt that does not go through the door. The BEST 8T is a tubular deadbolt tube component rather than a complete lock, and the Baldwin Reserve 8BR0618001 is a deadbolt spacer. The Corbin Russwin DL3211 is a cylinder x blank deadlock with no interior thumbturn.
12) The Kwikset 660 SQT is rated residential - what deadbolt should I spec for a school or classroom door instead?
The 660 SQT is a residential Grade 3 deadbolt. For classroom function, where the outside key throws and retracts the bolt, the Falcon D111 is a Grade 1 heavy duty classroom deadbolt with an adjustable backset and the Falcon D211 is the Grade 2 medium duty classroom version, both cylinder x thumbturn. The Hager 3118 is a Grade 1 classroom deadbolt with a 6-pin Schlage C cylinder for 1-3/8 inch to 1-3/4 inch doors, and the Corbin Russwin DL2211 is a Grade 1 cylindrical classroom deadlock for 1-3/4 inch doors.
13) How do I re-key this lock when a tenant moves out?
SmartKey re-keying takes seconds and no cylinder removal. You retract the bolt, insert the current working key, use the SmartKey tool, then insert the new key. The lock is then keyed to the new key and the old one is dead. For a landlord turning units, that removes the locksmith call at every turnover, and the lock also resists advanced break-in techniques such as bumping and picking.
14) I need a Grade 1 deadbolt instead of this Kwikset. What else do you carry?
For a step up in grade, the Accentra D111 is Grade 1 with a 2-3/8 inch backset and fits 1-3/8 to 1-3/4 inch doors, the Dexter DB1000 single cylinder is Grade 1 for 1-3/8 to 1-7/8 inch doors, and the Delaney LM Series is a Grade 1 single cylinder supplied less core for facilities running their own keying system. All three are cylinder by thumbturn, the same function as the 660 SQT.
15) Is there another square rose deadbolt similar to the Kwikset 660 SQT?
Yes. The 660 SQT carries square trim in Satin Nickel, Bright Chrome, and Matte Black. Comparable square-trim single cylinder deadbolts include the Bravura 310SC Elite, a Grade 2 contemporary square cylinder x thumbturn deadbolt, the Brinks Mendocino E2402 contemporary square single cylinder deadbolt with a 4-way adjustable backset, and the Callan Model 200S, a Grade 3 square trim single cylinder deadbolt. The Baldwin Reserve DC.CSD is also square but is double cylinder.
16) What is the closest Grade 3 equivalent to the Kwikset 660 SQT deadbolt with an adjustable backset?
The Kwikset 660 SQT is Grade 3 with a latch adjustable from 2-3/8 inch to 2-3/4 inch backset. The Cal-Royal ED500 is a Grade 3 single cylinder cylinder x thumbturn deadbolt with an adjustable backset for 1-3/8 inch to 1-3/4 inch doors, and the Cal-Royal LSD is a Grade 3 single cylinder deadbolt for the same door range with an ADA ergonomic thumbturn. The Brinks Raleigh E2401 is a round-trim single cylinder deadbolt with a 4-way adjustable backset.
17) I need a keypad or electronic deadbolt instead of the keyed Kwikset 660 SQT - what are the options?
The 660 SQT is a mechanical key-and-thumbturn deadbolt with no electronic access. For code or credential entry, the Delaney KP400 is a Grade 2 electronic deadbolt with a programmable remote, the Codelocks CL2210 is an electronic mortise deadbolt, and the Codelocks CL200 is a surface deadbolt with key override. For multifamily RFID credentials, 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.
18) The Kwikset 660 SQT latch adjusts to 2-3/4 inch backset - what is a fixed 2-3/4 inch backset alternative?
The 660 SQT uses an adjustable latch that covers 2-3/8 inch and 2-3/4 inch preps from one part. If the opening is already bored at a fixed 2-3/4 inch backset, the Deltana CL200LA is a Grade 2 single cylinder cylinder x thumbturn deadbolt with a 2-3/4 inch backset. For a fixed 2-3/8 inch prep, the Accentra D111 is a Grade 1 single cylinder deadbolt with a 2-3/8 inch backset for 1-3/8 inch to 1-3/4 inch doors.
19) What deadbolt covers a door thicker than the Kwikset 660 SQT range?
The Kwikset 660 SQT is a residential deadbolt built for standard door preparations. For thicker doors, the Corbin Russwin DL3011 is a Grade 1 cylindrical deadlock covering 1-3/4 inch through 2-1/4 inch doors, and the Deltana 7312KA2 is a Grade 3 heavy duty double cylinder deadbolt covering 1-3/8 inch to 2 inch doors. The Dexter DB1000-SCT single cylinder deadbolt covers 1-3/8 inch to 1-7/8 inch.
20) Is there a Grade 2 single cylinder deadbolt that steps up from the Kwikset 660 SQT without going to Grade 1?
Yes. The 660 SQT is ANSI/BHMA Grade 3. Middle-ground Grade 2 single cylinder cylinder x thumbturn deadbolts include the Arrow DBX61, the Cal-Royal CB160 with a tamper-resistant cylinder guard, the Bravura 310B Elite in traditional round trim, and the Dexter DB2000-SCT for 1-3/8 inch to 1-3/4 inch doors. None of these use SmartKey re-keying, so they will not re-key to an existing Kwikset SmartKey system.
21) Does this Kwikset deadbolt come with keys, and how many?
Two keys come in the box, cut to the factory key code. The unit is supplied key coded, so if you are ordering several for one property and want them all on one key, the SmartKey feature lets you bring them onto a common key after install rather than ordering them keyed alike.
22) Is there anything on this lock for high-touch or healthcare environments?
The latch carries Microban antimicrobial product protection, which Kwikset states keeps door hardware 99.9 percent cleaner than unprotected surfaces. It is a surface treatment on the hardware, not a substitute for cleaning, but it is a point in its favor for multi-family common entries and assisted living unit doors where hardware gets handled constantly.
23) Can I use this deadbolt on an interior door or does it have to go on an exterior one?
It is built for exterior doors where keyed entry and security are needed. Nothing stops you putting it on an interior door, but you are paying for an outside cylinder you would not use. For an interior or storeroom door that only needs to lock from one side, a one-sided half-bore deadbolt like the Callan 205S is the cheaper and simpler prep.
24) What is a decorative alternative to the Kwikset 660 SQT deadbolt for a high-end entry door?
The Kwikset 660 SQT is a square rose deadbolt offered in Satin Nickel, Bright Chrome, and Matte Black. For decorative entry hardware, the Emtek #11 Tuscany is a lost wax cast bronze cylinder x thumbturn deadbolt, the Baldwin Estates 8011 is a contemporary 1-5/8 inch double cylinder deadbolt in the Estate Series, and the Emtek 8323 Modern Disc is a brass double cylinder deadbolt. Note the two double cylinder options key from both sides rather than using an interior thumbturn.
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Does the Kwikset 660SQT-26S.FD.DS.LK.23155 come with a warranty?
Absolutely. The Kwikset 660SQT-26S.FD.DS.LK.23155 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 660SQT-26S.FD.DS.LK.23155?
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