Kwikset 660-DS Single Cylinder...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$34.70
$19.67
Kwikset KWI-660-DS Single Cylinder Deadbolt with RCAL Latch and Dual RCS and 5303 Full Lip Strike K3

Kwikset 660-DS Single Cylinder Deadbolt with RCAL Latch and Dual RCS and 5303 Full Lip Strike K3

(No reviews yet) Write a Review

Model: 660-26D.DS
Selected Finish is

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

$34.70
$19.67
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 660-DS Single Cylinder Deadbolt with RCAL Latch and Dual RCS and 5303 Full Lip Strike K3

The Kwikset 660-DS Single Cylinder Deadbolt is designed for homeowners and property managers seeking dependable security with flexible installation. Featuring a single-cylinder keyed entry, this deadbolt provides exterior key access and convenient interior thumb-turn operation. Built with a RCAL adjustable latch, dual RCS strike plates, and a 5303 full lip strike (K3 finish), it delivers enhanced durability, security, and alignment across a wide range of door setups.

Key Features & Benefits

  • Single Cylinder Function
    Keyed entry on the outside with a thumb-turn on the inside for quick and safe operation.

  • RCAL Adjustable Latch
    Heavy-duty latch with adjustable backset (2-3/8" or 2-3/4") for compatibility with most standard doors.

  • Dual RCS Strike Plates
    Reinforced round corner square strike plates provide stronger doorframe anchoring and improved alignment.

  • 5303 Full Lip Strike (K3 Finish)
    Includes a premium full lip strike plate for enhanced security and clean installation.

  • Kwikset Quality
    Backed by decades of trusted performance in residential and commercial door hardware.

  • Easy Installation
    Installs in minutes with a screwdriver; fits most standard doors.

Specifications

   
Product Type Single Cylinder Deadbolt
Model Number 660-DS
Function Keyed entry outside, thumb-turn inside
Latch RCAL Adjustable Latch (2-3/8" or 2-3/4")
Strike Plates Dual RCS Strike Plates + 5303 Full Lip (K3)
Door Thickness 1-3/8" to 1-3/4" standard
Application Exterior or entry doors
Installation DIY-friendly, screwdriver only

 

 

RESOURCES & DOWNLOADS

Kwikset KWI-660-DS Single Cylinder Deadbolt with RCAL Latch and Dual RCS and 5303 Full Lip Strike K3

Manufacturer Resources

Product Specs

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

Kwikset 660-26D.DS – Frequently Asked Questions

1) Will the Kwikset 660-DS deadbolt fit my door if I don't know the backset?
It ships with the RCAL adjustable latch, which sets to either a 2-3/8 inch or a 2-3/4 inch backset. Those are the two standard residential bore-to-edge dimensions, so you don't need to measure before ordering, just flip the latch to match the hole already in the door.
2) What door thickness does the Kwikset 660-DS single cylinder deadbolt work on?
Standard doors from 1-3/8 inch to 1-3/4 inch. That covers typical older interior slabs at 1-3/8 and standard entry doors at 1-3/4. Thicker slabs than 1-3/4 are outside what this deadbolt is set up for.
3) Can I key the outside of the 660-DS and still get out fast from inside?
Yes. It's a single cylinder function: key on the exterior, thumbturn on the interior. Nobody inside needs a key to throw or retract the bolt. If your local code or insurer wants a keyed thumbturn on both sides (common next to glass sidelites), you'd need a double cylinder instead, such as the Callan Model 210S or the Dexter DB2000 double cylinder.
4) Is the Kwikset 660-DS deadbolt meant for commercial openings?
It's classified as residential hardware, aimed at exterior and entry doors on homes and multi-family units. For a commercial opening where a spec calls out an ANSI grade, look at graded options such as the Accentra D111 Grade 1, the Design Hardware D1 Series Grade 1, or the Arrow DBX61 Grade 2.
5) What is a comparable single cylinder deadbolt to the Kwikset 660-DS if a job spec calls for ANSI Grade 1?
The Kwikset 660-DS is a single cylinder deadbolt with keyed entry outside and thumb-turn inside, fitting 1-3/8 inch to 1-3/4 inch doors. If the spec calls for Grade 1 in the same cylinder x thumbturn function, the Accentra D111 is a Grade 1 single cylinder deadbolt with a 2-3/8 inch backset and the same 1-3/8 inch to 1-3/4 inch door thickness range, and the Dexter DB1000 single cylinder deadbolt is Grade 1 covering 1-3/8 inch to 1-7/8 inch doors. The Delaney LM Series is a Grade 1 single cylinder less core deadbolt for openings that take an interchangeable core.
6) Which deadbolt should I use instead of the Kwikset 660-DS on a door that needs keyed operation from both sides?
The Kwikset 660-DS is single cylinder - key outside, thumb-turn inside. For a door that must be keyed both sides, such as one with glass beside it, use a double cylinder unit instead: the Dexter DB2000 double cylinder deadbolt is Grade 2 for 1-3/8 inch to 1-3/4 inch doors, the Dexter DB1000 double cylinder is Grade 1 for 1-3/8 inch to 1-7/8 inch doors, and the Design Hardware D1 Series is a Grade 1 extra heavy duty double cylinder deadbolt for 1-3/4 inch doors. Confirm local egress code allows a double cylinder on the opening.
7) I need the same function as the Kwikset 660-DS but with a Schlage C keyway - what are my options?
The Kwikset 660-DS uses a Kwikset keyway. If a building is keyed to Schlage C, the Hager 3215 is a single cylinder deadbolt with a 1 inch throw in Grade 2 with a Schlage C keyway, and the Hager 3115 is a Grade 2 cylinder x thumbturn deadbolt with Schlage C; both cover 1-3/8 inch to 1-3/4 inch doors, the same range the 660-DS fits. The Hager 3118 is the Grade 1 classroom deadbolt with Schlage C and a 6-pin cylinder.
8) Is the Kwikset 660-DS the right deadbolt for a commercial or institutional opening?
The Kwikset 660-DS is classified as residential hardware and is aimed at homes and rental units. For commercial and institutional openings, the Corbin Russwin DL3011 is a Grade 1 cylindrical deadlock for 1-3/4 inch to 2-1/4 inch doors, the Falcon D111 is a Grade 1 heavy duty deadbolt with adjustable backset, and the Cal-Royal CRB800 is a Grade 1 heavy duty single cylinder deadbolt with a UL 3-hour fire rated latch.
9) Which deadbolt replaces the Kwikset 660-DS on a facility standardized to interchangeable cores?
The 660-DS ships as a keyed single cylinder unit. If a facility keys everything to small format interchangeable cores, the Arrow E61 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 deadbolt with interchangeable core prep and a 2-3/4 inch backset, and the Delaney LM Series is a Grade 1 single cylinder less core deadbolt.
10) What deadbolt works instead of the Kwikset 660-DS on a door thicker than 1-3/4 inches?
The Kwikset 660-DS is built for standard 1-3/8 inch to 1-3/4 inch doors. For thicker stock, the Dexter DB1000 single cylinder Grade 1 deadbolt covers 1-3/8 inch to 1-7/8 inch, the Deltana 7312KA2 double cylinder Grade 3 deadbolt covers 1-3/8 inch to 2 inch, and the Corbin Russwin DL3011 Grade 1 cylindrical deadlock covers 1-3/4 inch to 2-1/4 inch.
11) I manage apartments. What finishes does the Kwikset 660-DS deadbolt come in so I can match existing doors?
Seven finishes: Satin Nickel, Bright Chrome, Satin Chrome, Bright Brass, Antique Brass, Venetian Bronze, and Matte Black. That range covers most standard residential trim packages, so you can standardize a building on one deadbolt model and still match what's on each unit.
12) What tools do I need to install the Kwikset 660-DS deadbolt on an already-bored door?
A screwdriver. If the door is already bored for a standard tubular deadbolt, the 660-DS goes in without drilling: set the RCAL latch to the existing 2-3/8 or 2-3/4 backset, drop the bolt in, fit the strike, and tighten the mounting screws.
13) What's a comparable single cylinder deadbolt if I want an adjustable backset from a different brand?
Two close alternatives with adjustable backsets are the Brinks Raleigh Series round deadbolt and the Brinks Mendocino Series square deadbolt, both cylinder x thumbturn with a 4-way adjustable backset. If you want a graded version with the same 1-3/8 to 1-3/4 door range, the Cal-Royal ED500 is Grade 3 with an adjustable backset and the Dexter DB2000-SCT is Grade 2.
14) What is a simpler alternative to the Kwikset 660-DS for a door that does not need a key on the outside?
The 660-DS provides keyed entry from outside. If the opening only needs to be locked from inside, the Arrow E60 is a Grade 2 exit deadlock, non-keyed, with a blank plate outside and a thumbturn inside, covering 1-3/8 inch to 1-3/4 inch doors. For a door with no bore on the inside face, the Callan 205S is a Grade 3 one-sided half-bore deadbolt.
15) Which deadbolts are closest to the Kwikset 660-DS in offering an adjustable backset?
The Kwikset 660-DS ships with the RCAL adjustable latch that sets to either a 2-3/8 inch or 2-3/4 inch backset. Other deadbolts with adjustable backset include the Cal-Royal ED500, a Grade 3 single cylinder deadbolt with adjustable backset for 1-3/8 inch to 1-3/4 inch doors, the Falcon D111 Grade 1 deadbolt with adjustable backset, and the Brinks Raleigh E2401, a single cylinder round deadbolt with a 4-way adjustable backset. Fixed-backset alternatives such as the Deltana CL200LA at 2-3/4 inch require you to confirm the existing bore first.
16) Can I use a mortise or surface deadbolt in place of the Kwikset 660-DS?
No - the Kwikset 660-DS is a bored tubular deadbolt that installs with a screwdriver into a standard cross-bore and edge bore. Mortise and surface units prep differently: the Dormakaba D900 is a small case mortise deadbolt with a cylinder x thumbturn function, the Emtek 2050 and 2051 are European mortise deadbolts with an integrated roller latch, and the Codelocks CL200 is a surface-mounted deadbolt with key override. Swapping to any of these means new door prep, not a drop-in replacement.
17) What should I use instead of the Kwikset 660-DS if I want keyless or electronic entry on the same door?
The Kwikset 660-DS is a mechanical key-and-thumbturn deadbolt. For keyless operation on the same type of opening, the Delaney KP400 is a Grade 2 electronic deadbolt with a programmable remote, the Codelocks CL2210 is an electronic mortise deadbolt, and the Codelocks CL2200 is a medium duty electronic surface deadbolt in brushed steel. For multifamily credential access, the Dormakaba Nova-D is an RFID smart electronic deadbolt and the Saffire LX-D adds BLE with electronic lock override.
18) Are there Grade 2 deadbolts that function the same way as the Kwikset 660-DS?
Yes. The 660-DS is a single cylinder keyed-outside, thumbturn-inside deadbolt. Grade 2 units with that same cylinder x thumbturn function include the Arrow DBX61, the Cal-Royal CB160 which adds a tamper-resistant cylinder guard, the Dexter DB2000 single cylinder for 1-3/8 inch to 1-3/4 inch doors, and the Bravura 310B Elite in a traditional round trim with 310RC round and 310SC square contemporary versions in the same grade.
19) The Kwikset 660-DS has round trim - what deadbolt gives the same function with square or contemporary styling?
For a contemporary square face with the same single cylinder key-and-thumbturn operation, the Bravura 310SC Elite is a Grade 2 contemporary square deadbolt, the Bravura 910005 is a Grade 2 rectangle single cylinder deadbolt, the Callan 200S is a Grade 3 single cylinder square trim deadbolt, and the Brinks Mendocino E2402 is a contemporary square single cylinder deadbolt with 4-way adjustable backset. The 660-DS itself comes in Venetian Bronze, Satin Nickel, Bright Chrome, Satin Chrome, Bright Brass, Antique Brass and Matte Black if finish is the deciding factor.
20) If I need an ADA-friendly thumbturn rather than the standard turn on the Kwikset 660-DS, what should I order?
The Kwikset 660-DS uses a conventional interior thumb-turn. Where an easier grip is wanted, the Cal-Royal LSD is a Grade 3 single cylinder deadbolt with an ADA ergonomic thumbturn that fits the same 1-3/8 inch to 1-3/4 inch door range the 660-DS covers.
21) Can I use a Falcon D111 or Corbin Russwin DL2211 in place of the Kwikset 660-DS?
They are not the same function. The Kwikset 660-DS is a residential single cylinder deadbolt, key outside and thumb-turn inside. The Falcon D111 is a Grade 1 classroom function deadbolt, and the Corbin Russwin DL2211 is a Grade 1 cylindrical deadlock with classroom function and cylinder x blank plate, meaning no inside thumbturn on the blank side. The Falcon D211 is the Grade 2 classroom counterpart. Choose those only where a classroom function is actually specified.
22) I want a deadbolt and knob or lever keyed together instead of the standalone Kwikset 660-DS - what is available?
The Kwikset 660-DS is a standalone deadbolt with no latchset. If you want the bolt and the entry latch in one assembly, the Falcon H2101 is a Grade 2 entrance interconnected lock with a single cylinder deadbolt, so one device handles both the deadbolt and the entry function on the door.
23) Does the Kwikset 660-DS have any antimicrobial treatment?
Yes, it's built with Microban protection on the hardware. That's a consideration for multi-family and hospitality owners specifying touch surfaces across a lot of doors.
24) Is the Arrow 460 strike a substitute for the strike plates that come with the Kwikset 660-DS?
No. The Kwikset 660-DS includes dual RCS round corner square strike plates plus a 5303 full lip strike in K3 finish, sized for a bored tubular deadbolt in a standard frame. The Arrow 460 is a mortise lock strike for latchbolt and deadbolt functions with a straight lip on 1-3/4 inch doors, cut for a mortise case rather than a tubular bolt. Likewise the BEST 8T is a tubular deadbolt tube component, not a complete lock.
How fast can I get the Kwikset 660-26D.DS 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 660-26D.DS come with a warranty?
Absolutely. The Kwikset 660-26D.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 660-26D.DS?
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 660-26D.DS 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.
!