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Schlage B660 Single Cylinder Deadbolt
The B660 is Schlage's Grade 1 commercial single cylinder deadbolt, part of the B600 Series. It accepts conventional, FSIC, and SFIC cylinder formats and is available in 11 finishes. UL 10C 3-hour fire rated as an auxiliary lock. BAA compliant.
Strength and Security
- Solid sintered steel bolt with hardened steel anti-saw pin
- Metal dust box anchors deep to reinforce wood door frames with three 3" screws, protecting against kick-in attacks
- Free-spinning, broadly angled cylinder collar resists wrenching and prying
- Removable security shield protects bolt from ice-pick attack through the door
- Hardened steel ball-bearings protect mounting bolts from drill attack
- Fixed backset strengthens lock against tampering; adjustable option available
- UL 10C 3-hour fire rated as auxiliary locks
- UL 10B listed for neutral pressure doors
Key System Options
- Accepts conventional (6-pin C keyway), FSIC less core, FSIC prep with core, SFIC less core, and less cylinder configurations
- Open and restricted keyway options
- Factory master keying available
Certifications
- ANSI/BHMA A156.5 Grade 1 certified with conventional cylinder (FSIC is Grade 2; SFIC is Grade 3)
- UL 10C listed, 3-hour fire rated as auxiliary locks for A label single doors, 4' x 8'
- UL 10B listed for neutral pressure doors
- ADA compliant thumbturn design
- BAA (Buy American Act) compliant
B660 Function
- B660 (ANSI E0151): thumbturn inside x keyed cylinder outside
Product Specifications
- Deadbolt: 1" housing diameter; 0.875" x 0.62" x 1" throw; sintered steel with hardened steel anti-saw pin insert (drive-in options available)
- Faceplate: 1-1/8" x 2-1/4" with square corners
- Strike: 1-1/8" x 2-3/4" with square corners (ANSI, round corner, and thimble strike options available)
- Backset: 2-3/4" fixed (adjustable and other fixed options available)
- Door thickness range: 1-5/8" to 2" with conventional and FSIC cylinder; 1-3/4" to 2" with SFIC
- Reinforcement: metal dust box with three 3" screws
- Trim ring: 7/8" depth, solid brass or bronze
- Cylinder: 6-pin solid brass, C keyway (conventional option); FSIC and SFIC less core also available
- Keys included: 2 nickel silver cut keys (conventional cylinder variants)
- Standard latch: 12-296, adjustable 2-3/8" or 2-3/4" backset, square corner, 1-1/8" x 2-1/4", 1" housing diameter
- Standard strike: 10-094, square corner, no box, 1-1/8" x 2-3/4"
Suiting
Suites with Schlage, Von Duprin, and LCN devices for a consistent building-wide finish.
Manufacturer Resources
Schlage B Series Catalog
Product Specs
- Subcategory:
- Deadbolts
- Series:
- B600 Series
- Grade:
- Grade 1
- Duty Level:
- Heavy Duty
- Keys Included:
- 2
- Warranty:
- 10 Year
- Standard Latch:
- 12-296: Deadbolts - Adjustable 2-3/8" or 2-3/4"- Square corner, 1-1/8" x 2-1/4", 1" Housing Diameter
- Standard Strike:
- 10-094: Square corner, no box, 1-1/8" x 2-3/4"
- Keyed:
- Yes
- ANSI/BHMA:
- E0151
- Product Group:
- Mechanical Locks
- Product Subgroup:
- Bored Locksets
- Product Type:
- Deadbolts
- Electronic:
- No
- Keyed Function:
- Single Cylinder
- Commercial/Residential:
- Commercial
- Cylinder and Keyways:
- 6-pin Conventional Cylinder (C Keyway), FSIC Less Core, SFIC Less Core, Less Cylinder, FSIC Prep With Core
- Lock Function:
- Deadbolt
- Lock Type:
- Deadbolts
- Product Attribute:
- Deadbolts
- Segment:
- Door Hardware
- Tags:
- schlage b660p, b660p deadbolt, b660p schlage, b660 schlage
- Product Model:
- B660
- Product Function:
- Cylinder x Thumbturn
- Product Category:
- Mechanical Locks
- Department:
- Door Hardware
Schlage B660P 626 – Frequently Asked Questions
1) Will the Schlage B660 latch into the strike that is already in my frame?
Depends on what is cut in the jamb. The B660's standard strike is the 10-094, square corner with no box, measuring 1-1/8 x 2-3/4 inches, and the bolt throws 1 inch. If your existing strike is a square-corner 1-1/8 x 2-3/4 opening with a pocket deep enough for a full 1 inch throw, it drops in. Round corner, ANSI, and thimble strike options are available if the frame is prepped differently. The faceplate is 1-1/8 x 2-1/4 inches with square corners and a 1 inch bolt housing diameter, so the edge bore has to be 1 inch.
2) Is the Schlage B660 really Grade 1, or does that depend on which cylinder I order?
It depends on the cylinder, and this catches people out on spec jobs. The B660 is ANSI/BHMA A156.5 Grade 1 certified with the conventional cylinder. Order it with an FSIC and it certifies Grade 2; order it SFIC and it certifies Grade 3. The mechanical body is the same, but if your drawing calls for Grade 1 you have to specify the conventional 6-pin C keyway cylinder to hold that rating.
3) Can I key a set of Schlage B660 deadbolts alike across a building?
Yes. The B660 can be ordered keyed alike for multiple openings or keyed different, and factory master keying is available so the deadbolts fold into an existing hierarchy. Open and restricted keyway options are both offered. Because it suites with Schlage, Von Duprin, and LCN hardware, you can carry one key system and one finish across deadbolts, locksets, and exit devices in the same building.
4) My door is 2 inches thick. Which commercial deadbolts actually cover that?
The B660 does, with a conventional or FSIC cylinder, which takes it from 1-5/8 up to 2 inches. Among the other deadbolts we carry, the Deltana 7312KA2 is stated at 1-3/8 to 2 inches but it is a Grade 3 double cylinder, and the Corbin Russwin DL3011 cylindrical deadlock runs 1-3/4 to 2-1/4 inches though it is a cylinder-by-blank function with no inside thumbturn. Most of the rest, including the Dexter DB2000 and the Hager 3115 and 3215, top out at 1-3/4 inches.
5) Which deadbolt should I use on a 1-3/8 inch door instead of the Schlage B660?
The B660 starts at 1-5/8 inch door thickness with a conventional or FSIC cylinder, and 1-3/4 inch with SFIC, so a 1-3/8 inch door needs a different bolt. The Hager 3118 is a Grade 1 classroom deadbolt with a Schlage C keyway and 6-pin cylinder covering 1-3/8 to 1-3/4 inch, and it is fire rated. The Accentra D111 is Grade 1 cylinder x thumbturn over the same 1-3/8 to 1-3/4 inch range. If Grade 2 suits the opening, the Hager 3115 is a cylinder x thumbturn deadbolt with a Schlage C keyway, fire rated, over 1-3/8 to 1-3/4 inch. All three of the Hager and Accentra options keep the key outside, and the Hager units keep the Schlage C keyway so they stay on an existing C key system.
6) What is the closest Grade 1 single cylinder deadbolt to the Schlage B660 from another manufacturer?
The Falcon D111 is the nearest Grade 1 cylinder x thumbturn deadbolt in the D100 Series, rated Heavy Duty like the B660. Both carry ANSI/BHMA Grade 1 and use a keyed cylinder outside with a thumbturn inside. The B660 differs in cylinder breadth: it accepts a 6-pin conventional C keyway, FSIC less core, FSIC prep with core, SFIC less core, or less cylinder, and it is BAA compliant with UL 10C 3-hour fire rating as an auxiliary lock. The Accentra D111 is also Grade 1 cylinder x thumbturn, in the D Series, with a 2-3/8 inch backset and a 1-3/8 to 1-3/4 inch door thickness range, against the B660's 2-3/4 inch fixed backset and 1-5/8 to 2 inch range with a conventional cylinder.
7) What do I order instead of the Schlage B660 if the opening needs a key on both sides?
The B660 is a single cylinder function, ANSI E0151, with a keyed cylinder outside and a thumbturn inside, so it cannot be keyed on both faces. For double cylinder, the Design Hardware D1 Series is a Grade 1 double cylinder deadbolt at Extra Heavy Duty for 1-3/4 inch doors, and the Dexter DB1000 is a Grade 1 double cylinder deadbolt covering 1-3/8 to 1-7/8 inch. In Grade 2, the Hager 3214 is a double cylinder deadbolt with a Schlage C keyway over 1-3/8 to 1-3/4 inch, and the Delaney LU Series is a Grade 2 double cylinder deadbolt in stainless steel US32D. Confirm the local egress code for the facility before specifying a double cylinder on a required exit door.
8) What is the equivalent to the Schlage B660 SFIC option from another brand?
The B660 offers a B - SFIC Less Core and a J - FSIC Less Core cylinder option, so the core is supplied and installed separately by the keying shop. Comparable interchangeable core deadbolts include the Arrow E61 in 26D, a Grade 2 single cylinder deadlock with SFIC prep less core for 1-3/8 to 1-3/4 inch doors, and the Deltana CL200LAIC, a Grade 2 single cylinder deadbolt with interchangeable core prep, non-cylinder, on a 2-3/4 inch backset. The Delaney LM Series is a Grade 1 single cylinder less core deadbolt in dull chrome US26D. The B660 with SFIC works on 1-3/4 to 2 inch doors, which is a narrower thickness window than its conventional and FSIC configurations.
9) Which Grade 1 deadbolt covers a 2 inch thick door if the Dexter DB1000 stops short?
The Dexter DB1000 single cylinder is a Grade 1 cylinder x thumbturn deadbolt covering 1-3/8 to 1-7/8 inch doors, and the Design Hardware D1 Series Grade 1 is specified at 1-3/4 inch. The Schlage B660 runs 1-5/8 to 2 inch with a conventional or FSIC cylinder and 1-3/4 to 2 inch with SFIC, so it reaches a full 2 inch door. For thicker still, the Corbin Russwin DL3011 is a Grade 1 cylindrical deadlock covering 1-3/4 to 2-1/4 inch, though it is a cylinder x blank function with no inside thumbturn.
10) Is the Schlage B660 a single cylinder deadbolt, and what is on the inside?
Key outside, thumbturn inside. That is ANSI function E0151, the standard single cylinder arrangement, and the thumbturn is an ADA compliant design so it can be operated without tight grasping or twisting. If you need key operation on both faces, this is the wrong model, and a double cylinder deadbolt is what you want instead.
11) Is the Schlage B660 deadbolt Buy American Act compliant for a government job?
Yes, the B660 is BAA compliant, which is what lets it onto federally funded work where domestic content is a condition of the contract. It is also certified ANSI/BHMA A156.5 Grade 1 with a conventional cylinder and UL 10C 3-hour fire rated as an auxiliary lock, which is usually the rest of what a public agency submittal asks for.
12) How does the Schlage B660 hold up against kick-ins and drilling on a wood frame door?
The security package is where the B660 earns its Grade 1. The bolt is solid sintered steel with a hardened steel anti-saw pin. A metal dust box anchors into the frame with three 3 inch screws so a kick loads the framing studs rather than the jamb trim. Hardened steel ball bearings shield the mounting bolts from drilling, a free-spinning angled cylinder collar defeats wrenching and prying, and a removable security shield blocks an ice-pick attack on the bolt through the door edge. The fixed 2-3/4 inch backset also adds resistance to tampering compared with an adjustable mechanism.
13) Is a Grade 1 commercial deadbolt overkill for an apartment or storage door?
For a low-traffic interior or storage opening, often yes. The B660 is heavy duty, commercial rated, and priced and built for that duty. If the opening does not need Grade 1 or a fire rating, a Grade 2 like the Arrow DBX61 or the Cal-Royal CB160 with its tamper-resistant cylinder guard covers the same cylinder-by-thumbturn function. Where the B660 is worth it is on entrances, fire rated openings needing an auxiliary lock, and anywhere you are standardizing on a Schlage key system across the building.
14) I already run Schlage C keyway keys. What deadbolts key into that system?
The B660 with the P6 conventional cylinder is a 6-pin solid brass cylinder in the C keyway, so it keys straight into an existing Schlage C system. If you need a lighter-duty option on the same key, the Hager 3115 is a Grade 2 cylinder-by-thumbturn deadbolt with a Schlage C keyway, and the Hager 3118 is a Grade 1 classroom deadbolt with a Schlage C keyway and a 6-pin cylinder. Both Hagers are limited to 1-3/8 to 1-3/4 inch doors.
15) Do I need to order the strike and latch separately with a Schlage B660 deadbolt?
No. The B660 comes with the 12-296 latch, adjustable to 2-3/8 or 2-3/4 inch backset, square corner, 1-1/8 x 2-1/4 inches with a 1 inch housing diameter, plus the 10-094 square corner strike at 1-1/8 x 2-3/4 inches with no box. The reinforcing metal dust box with three 3 inch screws is part of the package as well, and the conventional cylinder versions include two cut keys. What you do have to decide at order is cylinder type, keyway, keyed alike or keyed different, and finish. If your frame is prepped for an ANSI, round corner, or thimble strike, specify that instead of the standard.
16) What deadbolt has an adjustable backset if the Schlage B660 2-3/4 inch fixed backset does not fit the bore?
The B660 ships with a 2-3/4 inch fixed backset, with adjustable and other fixed backsets available, and its standard 12-296 latch itself adjusts between 2-3/8 and 2-3/4 inch. If the prep calls for a different brand with adjustment built in, the Falcon D111 is a Grade 1 Heavy Duty deadbolt with an adjustable backset, the Cal-Royal ED500 is a Grade 3 single cylinder deadbolt with an adjustable backset for 1-3/8 to 1-3/4 inch doors, and the Brinks Raleigh E2401 is a single cylinder deadbolt with a 4 way adjustable backset. The Accentra D111 is fixed at 2-3/8 inch, which suits a bore already prepped to that dimension.
17) Is there a lighter duty alternative to the Schlage B660 for a low traffic opening?
Several single cylinder deadbolts sit below the B660's Grade 1 Heavy Duty rating with the same key outside, thumbturn inside operation. The Arrow DBX61 is a Grade 2 single cylinder deadbolt in the DBX Series. The Falcon D211 is a Grade 2 deadbolt in the D200 Series at Medium Duty. The Cal-Royal CB160 is a Grade 2 single cylinder deadbolt with a tamper-resistant cylinder guard. Below that, the Cal-Royal LSD is a Grade 3 single cylinder deadbolt with an ADA ergonomic thumbturn covering 1-3/8 to 1-3/4 inch doors, and the Cal-Royal ED500 is a Grade 3 single cylinder deadbolt with an adjustable backset over the same thickness range. The B660 remains the option that carries a UL 10C 3-hour fire rating as an auxiliary lock and BAA compliance.
18) Can I swap a Schlage B660 for a Corbin Russwin DL3211 or DL2211?
Not as a like-for-like. The B660 is a cylinder x thumbturn deadbolt, ANSI E0151, key outside and turn inside. The Corbin Russwin DL3211 is a Grade 1 cylindrical deadlock in the DL3200 Series with cylinder x blank for 1-3/4 inch doors, and the DL2211 is a Grade 1 cylindrical deadlock, cylinder x blank, in the DL2200 Series, also 1-3/4 inch. Neither gives the occupant a thumbturn on the inside face, so a room that must be secured from within needs the B660 function rather than either DL model. Where a keyed outside with no inside turn is the intent, the DL models match that requirement directly.
19) Is a Codelocks CL200 or an electronic deadbolt a substitute for the Schlage B660?
They solve a different problem. The B660 is a non-electronic Grade 1 mechanical deadbolt, Heavy Duty, mortised into the door with a 2-3/4 inch fixed backset. The Codelocks CL200 is a surface deadbolt with key override at Light Duty, and the CL2200 is an electronic surface deadbolt at Medium Duty. Surface mounting means they attach to the face of the door rather than into the bore the B660 uses, so the door prep is not shared. The Dormakaba Saffire LX-D is an RFID electronic deadbolt with BLE and electronic lock override, and the Delaney KP400 is a Grade 2 electronic deadbolt with a programmable remote. Choose those where credential management matters more than a Grade 1 mechanical bolt and a UL 10C 3-hour fire rating.
20) What is the difference between the Schlage B660 and a mortise deadbolt like the Dormakaba D900 or M1960?
The B660 is a bored deadbolt that installs into a cross bore with a 1 inch housing diameter bolt, a 1-1/8 x 2-1/4 inch square corner faceplate, and a 1-1/8 x 2-3/4 inch strike. The Dormakaba D900 is a small case mortise deadbolt with a D cylinder, keyed different with SC keyways, and the Dormakaba M1960 is an M1000 Series single cylinder deadbolt, cylinder x thumbturn, supplied with no trim. A mortise body needs a pocket routed into the door edge rather than a bore, so it is a different door prep. Confirm what the existing door is prepped for before substituting either way.
21) Is the Falcon H2101 interconnected lock an option in place of the Schlage B660?
Only if the opening also needs a latch. The Falcon H2101 is a Grade 2 entrance interconnected lock in the H2 Series that combines a single cylinder deadbolt with a latch so one motion retracts both. The B660 is a deadbolt alone, ANSI E0151, with no latching function, and it is typically installed above a separate lockset or exit device. Pick the H2101 where a single trim should handle both bolts on an apartment or entry door; keep the B660 where the primary lock is already in place and the door needs a Grade 1 auxiliary deadbolt over it.
22) What finishes does the Schlage B660 come in, and is there an antimicrobial option?
Eleven finishes: 605 Bright Brass, 606 Satin Brass, 609 Antique Brass, 612 Satin Bronze, 613 Oil Rubbed Bronze, 619 Satin Nickel, 622 Matte Black, 625 Bright Chrome, 626 Satin Chrome, 626AM Satin Chrome Antimicrobial, and 643E Aged Bronze. The 626AM is the antimicrobial version of satin chrome, which is what healthcare and senior living specs usually call for. The trim ring is solid brass or bronze at 7/8 inch depth.
23) Does the Schlage B660 deadbolt have to be handed?
No handing to specify on the B660. It is a bored deadbolt with a key cylinder on one face and a thumbturn on the other, so it installs the same on a left or right hand door. What you do have to get right is door thickness, backset, and the bolt front style, since square corner and circular drive-in bolt configurations are both offered.
24) Are the Emtek and Baldwin deadbolts an alternative to the Schlage B660 on a commercial opening?
They are built for a different setting. The B660 is a commercial Grade 1 Heavy Duty deadbolt available in 11 finishes including 626 Satin Chrome, 626AM Satin Chrome Antimicrobial, and 622 Matte Black, and it suites with Schlage, Von Duprin, and LCN devices for a consistent building-wide finish. The Emtek #11 Tuscany is a lost wax cast bronze deadbolt in the Tuscany series with a cylinder x thumbturn function, and the Baldwin Estates 8011 is a contemporary 1-5/8 inch double cylinder deadbolt in the Estate Series. Those are decorative residential-style trims. On a facility standardizing hardware across doors, the B660 keeps the finish and key system aligned with the rest of the Allegion openings.
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Does the Schlage B660P 626 come with a warranty?
Absolutely. The Schlage B660P 626 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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