Kwikset 660SQT.DS Single Cyli...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$53.10
$28.21
Kwikset 660SQT.DS Single Cylinder Square Deadbolt SmartKey with RCAL Latch and Dual RCS and 5303 Full Lip Strike K3

Kwikset 660SQT.DS Single Cylinder Square Deadbolt SmartKey with RCAL Latch and Dual RCS and 5303 Full Lip Strike K3

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Model: 660SQT-26S.DS
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$53.10
$28.21
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Kwikset 660SQT.DS Single Cylinder Square Deadbolt SmartKey with RCAL Latch and Dual RCS and 5303 Full Lip Strike K3

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 Function:
Single Cylinder
Product Type:
Deadbolts
Keyway Profile:
Kwikset SmartKey
Door Strike:
RCS and 5303 Full Lip Strikes
Product Category:
Mechanical Locks
Department:
Door Hardware

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

1) Will the Kwikset 660SQT.DS deadbolt fit a door bored for a 2-3/8 inch backset, or do I need a different part for 2-3/4?
One part covers both. The RCAL latch on the Kwikset 660SQT square deadbolt is adjustable from 2-3/8 inch to 2-3/4 inch backset, so it drops into either of the standard residential door preps without ordering a separate latch.
2) Can I key this Kwikset square deadbolt to match the Schlage keys my other units already use?
Yes, within limits. The 660SQT uses SmartKey Security, and the re-key technology accepts either the Kwikset KW1 keyway or the Schlage SC1 keyway, so you can re-key it yourself in seconds to an existing SC1 key. It ships with two keys.
3) Is the Kwikset 660SQT square deadbolt rated for a commercial entrance?
It is a residential-duty lock, certified ANSI/BHMA Grade 3. For a commercial opening or a heavy-traffic multi-family entrance, step up to a Grade 1 deadbolt like the Dexter DB1000 single cylinder or the Delaney LM Series, or a Grade 2 such as the Hager 3215.
4) Is the Kwikset 660SQT keyed on both sides, or is there a thumbturn inside?
Single cylinder: key on the outside, thumbturn on the inside. If code or your insurer requires a key on both sides (common next to glass), you need a double cylinder unit instead, such as the Callan 210S or the Dexter DB2000 double cylinder.
5) I manage a building and re-key units between tenants. Does this deadbolt save me calling a locksmith?
That is the point of SmartKey. You re-key the 660SQT yourself in seconds with the learn tool and a new key, no cylinder pull and no locksmith visit, and it works on either the KW1 or SC1 key profile so you can keep whichever key blank your portfolio already stocks.
6) What is the closest square-trim single cylinder deadbolt alternative to the Kwikset 660SQT.DS?
The Bravura 310SC Elite is a Grade 2 contemporary square deadbolt in a cylinder x thumbturn function, and the Brinks Mendocino Series E2402 is a contemporary square single cylinder deadbolt with a 4-way adjustable backset. Both match the 660SQT.DS square escutcheon look and its key-outside, thumbturn-inside operation. The Kwikset carries ANSI/BHMA Grade 3 certification and SmartKey re-key technology, which neither of those two offers.
7) I need a heavier grade than the Kwikset 660SQT.DS for a commercial opening - what should I use instead?
The 660SQT.DS is ANSI/BHMA Grade 3 and catalogued for residential use. For a commercial opening, the Dexter DB1000 single cylinder deadbolt is Grade 1 with a 1-3/8 inch to 1-7/8 inch door thickness range, the Delaney LM Series 301702 is a Grade 1 single cylinder less-core deadbolt, and the Deltana CL200LM is a Grade 1 single cylinder deadbolt. All three keep the cylinder x thumbturn function of the Kwikset.
8) What if I need a double cylinder deadbolt instead of the Kwikset 660SQT.DS?
The 660SQT.DS is single cylinder - key outside, thumbturn inside. For keyed operation on both faces, the Baldwin Reserve Contemporary Square Deadbolt (DC.CSD) is double cylinder and keeps a square trim profile, the Dexter DB2000-DCT is a Grade 2 double cylinder with a 1-3/8 inch to 1-3/4 inch door thickness range, and the Callan Model 210S is a Grade 3 double cylinder.
9) The Kwikset 660SQT.DS uses SmartKey - what if my building is keyed to Schlage C?
The 660SQT.DS keyway is Kwikset SmartKey, re-keyable to the Kwikset KW1 or Schlage SC1 keyway options. If the facility is standardized on Schlage C, the Hager 3215 is a Grade 2 single cylinder deadbolt with a 1 inch throw and a Schlage C keyway, the Hager 3115 is a Grade 2 cylinder x thumbturn deadbolt with Schlage C, and the Hager 3118 is Grade 1 with a Schlage C 6-pin cylinder. All three list a 1-3/8 inch to 1-3/4 inch door thickness range.
10) What looks like a substitute for the Kwikset 660SQT.DS but will not drop into the same prep?
A few items in the deadbolt family are not interchangeable with a tubular bored deadbolt like the 660SQT.DS, which installs in standard door prep with a screwdriver. The Emtek 2050 European Mortise Deadbolt with integrated roller latch requires a mortise pocket, the Dormakaba D900 is a small case mortise deadbolt, and the Codelocks CL200 is a surface-mounted deadbolt with key override. The Arrow 460 is a mortise lock strike, not a lock at all, and the BEST 8T is a tubular deadbolt tube component rather than a complete lock.
11) I need a fire rated deadbolt - does the Kwikset 660SQT.DS cover that, or is there another option?
For a rated opening, the Cal-Royal CRB800 is a heavy duty single cylinder deadbolt with a UL 3-hour fire rated latch, and the Hager 3215, 3115 and 3118 deadbolts all carry a fire rating and fit 1-3/8 inch to 1-3/4 inch doors. The 660SQT.DS itself is a Grade 3 residential deadbolt with a 1 inch throw and SmartKey re-keying.
12) Which strikes come in the box with the Kwikset 660SQT deadbolt?
Two strike options ship with it: the round deadbolt strike (RCS) and the 5303 full lip strike. That lets you match a round-corner frame prep or a flat lip prep on a wood jamb without a second trip to the supply house.
13) Will this deadbolt throw far enough to pick up my existing strike in the jamb?
The 660SQT throws a full 1 inch bolt, which is the standard deep throw for a residential entry deadbolt and reaches well into a properly prepped jamb. If your frame is cut for a shallower bolt, plan on enlarging the strike pocket.
14) Does the faceplate on this Kwikset deadbolt latch have square or round corners?
Round corner. The RCAL latch on the 660SQT has a round corner faceplate, which drops straight into a routed door edge cut by a standard bore kit. A square-corner prep will need the mortise corners squared or the pocket adjusted.
15) Is there a round-trim version of a SmartKey-style deadbolt if the square look does not suit the door?
The 660SQT.DS uses square trim. For round trim in the same single cylinder, cylinder x thumbturn arrangement, the Bravura 310RC Elite is a Grade 2 contemporary round deadbolt, the Bravura 310B Elite is a Grade 2 traditional round deadbolt, and the Brinks Raleigh E2401 is a transitional round single cylinder deadbolt with a 4-way adjustable backset.
16) Can I use an interchangeable core deadbolt in place of the Kwikset 660SQT.DS?
No - the 660SQT.DS ships with a SmartKey cylinder and two keys and is not built for a small format interchangeable core. For an IC opening, the Arrow E61 26D IC is a Grade 2 single cylinder deadlock with SFIC prep less core for 1-3/8 to 1-3/4 inch doors, the Deltana CL200LAIC is a Grade 2 single deadbolt with interchangeable core prep on a 2-3/4 inch backset, and the Delaney LM Series 301702 is a Grade 1 single cylinder less core deadbolt.
17) Is there a keyless or electronic alternative to the Kwikset 660SQT.DS for a rental unit?
The 660SQT.DS is a keyed single cylinder deadbolt operated by key outside and thumbturn inside. For code or credential entry instead, the Delaney KP400 is a Grade 2 electronic deadbolt with a programmable remote, 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. For a non-keyed exit application, the Arrow E60 is a Grade 2 exit deadlock with a blank plate outside and thumbturn inside for 1-3/8 to 1-3/4 inch doors.
18) What deadbolt should I use if only one side of the door can be bored?
The Kwikset 660SQT.DS is a through-bored single cylinder deadbolt with a cylinder outside and a turn piece inside. If the door can only take a half bore, the Callan Model 205S is a Grade 3 one-sided half-bore deadbolt. If the exterior face must stay blank, the Arrow E60 is a Grade 2 exit deadlock with a blank plate outside and a thumbturn inside.
19) Which alternative to the Kwikset 660SQT.DS has an easier thumbturn for accessibility?
The 660SQT.DS locks and unlocks with a turn piece on the interior. If grip is a concern, the Cal-Royal LSD is a Grade 3 single cylinder deadbolt with an ADA ergonomic thumbturn, rated for 1-3/8 inch to 1-3/4 inch doors. The Cal-Royal CB160 is a Grade 2 single cylinder deadbolt with a tamper-resistant cylinder guard if security of the cylinder is the bigger concern.
20) Is there a deadbolt like the Kwikset 660SQT.DS that fits a thicker door?
The Deltana 7312KA2 is a Grade 3 double cylinder deadbolt rated for 1-3/8 inch to 2 inch doors, and the Corbin Russwin DL3011 is a Grade 1 cylindrical deadlock listing 1-3/4 inch to 2-1/4 inch. Both reach beyond the 1-3/4 inch range typical of the Grade 2 and Grade 3 residential deadbolts, though the DL3011 is a cylinder x blank configuration rather than the cylinder x thumbturn of the 660SQT.DS.
21) What is a comparable Grade 2 square or rectangular deadbolt if Grade 3 is not enough?
The 660SQT.DS is ANSI/BHMA Grade 3. Stepping to Grade 2 in similar squared trim, the Bravura 310SC Elite is a Grade 2 contemporary square deadbolt and the Bravura 910005 is a Grade 2 rectangle deadbolt, both single cylinder with cylinder x thumbturn operation. The Arrow DBX61 is another Grade 2 single cylinder deadbolt in that function.
22) What tools do I need to install the Kwikset 660SQT deadbolt on an already-bored door?
A screwdriver. On a door already bored for a standard deadbolt, the 660SQT installs in minutes: set the latch backset to 2-3/8 or 2-3/4, drop the latch in the edge bore, fit the outside cylinder and inside thumbturn, and mount the strike.
23) What is a square deadbolt versus a round one, and does the shape affect installation?
Shape is trim only. The 660SQT uses square escutcheon trim to match contemporary square levers and handlesets; round trim like the Bravura 310RC Elite covers the same bore. Both mount to the same standard cross bore and edge bore, so pick on looks and on what is already hanging on the other doors.
24) Can I get a deadbolt and lever keyed and interconnected instead of a standalone Kwikset 660SQT.DS?
The 660SQT.DS is a standalone deadbolt and does not include a latch set for the knob or lever bore. If you want the deadbolt and entry latch retracted together, the Falcon H2101 is a Grade 2 entrance interconnected lock with a single cylinder deadbolt. The Baldwin Estates 8011 is another entrance-function option, in a contemporary 1-5/8 inch double cylinder configuration.
25) What is the antimicrobial treatment on this Kwikset deadbolt, and where is it applied?
Microban Antimicrobial product protection is built into the hardware, which Kwikset states keeps door hardware 99.9 percent cleaner than unprotected surfaces. It is a surface treatment against microbes on the hardware itself, not a substitute for cleaning, and it does not change how the lock installs or operates.
How fast can I get the Kwikset 660SQT-26S.DS delivered?
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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 660SQT-26S.DS come with a warranty?
Absolutely. The Kwikset 660SQT-26S.DS 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.DS?
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