Whether interior or exterior, a Schlage doorknob is designed to perform -- and to do so beautifully. Barzel Lock offers many attractive and functional Schlage products, from Schlage electrified lever locks to knobs with privacy locks for your bedroom or bath.

Our Schlage collection includes Schlage A Series knobs and AL Series lever locks in a wide range of finishes to complement any decor. We carry all the most sought after Schlage knobs, such as the Schlage A Series Levon knob, Orbit knob, F10 Plymouth knob and other Plymouth knobs, Georgian knob, Tulip knob and more.

Some of our other popular sellers in this collection include the Schlage Bell Knob; Schlage D Series knobs for heavy traffic/high security applications such as hospitals; Schlage ND Series of lever locks; Schlage B250 Series single cylinder deadlatch; Schlage B500 and B600 Series of deadbolt locks; and many more.

Whether you are looking for Schlage Georgian knobs for your home or a single cylinder deadbolt made with Schlage’s security and precision, shop Barzel Lock for great prices and excellent service.

Schlage B660 Single Cylinder Deadbolt

        100+ IN STOCK                    

Schlage B660 Single Cylinder Deadbolt. The B600 Series is Schlage’s highest grade deadbolt locks. Choose the 600 for Grade 1 security in high-traffic commercial applications. B600 Series Schlage’s toughest heavy duty Grade 1 commercial deadbolt. Furnished with conventional cylinder standard. Also available with full size interchangeable core cylinder or small format interchangeable core (SFIC) cylinder. Requires 21 ⁄8" (54mm) prep. UL10B listing standard for auxiliary lock on A label fire doors.

Schlage B660 - Single cylinder deadbolt

• Deadbolt thrown or retracted by key outside or thumbturn inside.


Finishes: 605-Bright Brass, 606-Satin Brass, 609-Antique Brass, 612-Satin Bronze, 613-Oil Rubbed Bronze, 619-Satin Nickel, 625-Bright Chrome, 606-Satin Chrome


Features and Benefits
• 1” (25 mm) throw, high-strength steel alloy deadbolt with hardened steel roller resists sawing and kick-in attacks
• Precision-built solid brass 6-pin cylinders with phosphor bronze springs and nickel silver pins ensure long life and smooth operation
• Tough nickel silver keys for smooth, long-lasting operation
• Exclusive concealed wood frame reinforcer protects wood jamb against kick-in attacks
• Large inside thumbturn makes it easy to throw and retract deadbolt
• Security shield protects bolt from ice-pick attack through the door
• Hardened steel ball-bearings protect mounting bolts from drill attack
Handing: B250-Series deadlatches are reversible. All other B-Series locksets are non-handed.
Door Thickness:
B250-Series, 5-pin: 13/8” to 13/4” (35mm to 44mm) standard. Available to 21/4” (57mm), assembled to order.
B500-Series, 5-pin: 13/8” to 13/4” thick (35mm to 44 mm) standard. Available to 21/4” (57mm), assembled to order.
B600/700/800-Series: 13/4” to 2” (44mm to 51mm) standard. Available for 13/8” (35mm) and doors up to 21/2” (63mm), assembled to order. Door ranges may vary by function.
B250-Series: 23/8” (60mm) standard. 23/4” (70mm) optional.
B500-Series: Adjustable for 23/8” (60mm) or 23/4” (70mm) standard.
B600/700/800-Series: 23/4” (70mm) standard, 23/8” (60mm), 33/4” (95mm), 5” (127mm) optional.
Front: Brass, bronze or stainless steel. 11/8” x 21/4” (29mm x 57mm) square corner, beveled.
Dead Bolt: 1” (25 mm) throw with saw-resistant hardened steel insert.
Latch Bolt: Brass, 9/16” (14mm) throw, deadlocking on keyed and exterior functions.
Exposed Trim: Wrought brass, bronze or stainless steel.
Thumbturn: Pressure cast zinc, plated to match finish symbols.
B500 Series: 11/8” x 23/4”, metal dust box reinforcer and three 3” screws. Optional strikes, lip lengths and ANSI strike box available.
B600 and B250-Series: 11/8” x 23/4” (32mm x 70mm) with steel reinforcer and two 3” screws standard.
B500 and B250-Series meet or exceed A156.5 Grade 2 strength and operational requirements.
B600/700/800-Series meets or exceeds A156.5 Grade 1 strength and operational requirements.
UL / cUL:
B600/700/800-Series locks are UL10B Listed auxiliary locks for A label single doors, 4 ’ x 8 ’.
UL10B Listing optional for B500-Series as auxiliary locks. Letter F and UL symbol on latch front indicate listing.
UL437 Listed locking cylinder optional:
Specify Primus 20-500 Series cylinder for B500 and B250-Series Grade 2 products, or specify B800-Series Grade 1 products.
ADA Compliant: Schlage Lock Company offers a wide selection of locks designed to meet the Americans With Disabilities Act.
Cylinder & Keys: 6-pin patented Everest C123 keyway standard with two nickel silver keys per lock. Items specified in C keyway will be furnished 5-pin.
Keying Options: Interchangeable core and Primus XP high security cylinders. Master keying, grand master keying and construction keying.
Commercial: Three-year limited.
Residential: Full lifetime mechanical.