Schlage B662 Double Cylinder Deadbolt

The Schlage B662 is a Grade 1 double cylinder deadbolt from Schlage's B600 series. If you've been searching "b662", "schlage b662", "b662 deadbolt", or "schlage double cylinder deadbolt" - the B662 is ANSI function E0141: a deadbolt that's operated by key on both sides of the door. There's no thumbturn. You need a key to throw or retract the deadbolt from outside, and a key to throw or retract it from inside as well.

What Double Cylinder Means and the Safety Caution

Double cylinder means key-both-sides. No thumbturn. From inside, you can't release the bolt without a key. That's intentional for specific applications - doors with glass panels or sidelites where someone could break the glass and reach a standard thumbturn, utility doors in commercial buildings where internal access also needs to be controlled, and situations where the facility needs to prevent access from inside as well as outside.

Schlage includes a clear caution with every B662: double cylinder locks are a life safety hazard on any door in a structure used for egress. If someone needs to exit in a fire and doesn't have a key, the door won't open. Use on egress doors is prohibited in most code jurisdictions. Confirm installation location compliance with your AHJ before specifying the B662 on any required exit door.

Decoding the B662P vs B662B vs B662J

The suffix after B662 identifies the cylinder configuration. B662P (or B662 with no suffix) ships with a conventional cylinder - 6-pin, Schlage C keyway or Everest keyway, standard residential/commercial key system. B662B ships less cylinder, prepped for SFIC (Small Format Interchangeable Core). B662J ships less cylinder, prepped for FSIC (Full Size Interchangeable Core). If you're specifying B662 for a facility that runs an IC key system, you want B662B (SFIC) or B662J (FSIC). The conventional B662P is the right choice when you're integrating into an existing Schlage C or Everest key system.

B600 Series Security Construction

The B662 uses Schlage's B600 series bolt - sintered steel body with a hardened steel anti-saw pin insert. The anti-saw pin rotates freely when it contacts a saw blade, defeating cutting attacks. The deadbolt housing is 1-inch diameter. Bolt throw is 1 inch. The bolt also resists ice-pick attacks from the inside through a removable metal security shield behind the bolt.

Mounting bolt protection comes from hardened steel ball bearings that sit behind the screw heads - a drill bit hitting the ball bearing can't grip and strips rather than cutting through. The cylinder collar is free-spinning and broadly angled, making it harder to grab and torque with a pipe wrench or pliers.

The dust box and wood frame reinforcer that ships standard uses three 3-inch screws that anchor deep into the door frame - this is what actually resists kick-in, not the bolt alone.

Specifications

Model: Schlage B662

Function: Double Cylinder Deadbolt, ANSI E0141

Cylinder: P = Conventional (Schlage C/Everest keyway); B = SFIC less core; J = FSIC less core

Grade: ANSI/BHMA A156.5 Grade 1 (conventional); Grade 2 (FSIC); Grade 3 (SFIC)

Deadbolt: 1" throw, sintered steel, hardened steel anti-saw pin

Backset: 2-3/4" fixed standard

Front: Brass/bronze/stainless, 1-1/8" x 2-1/4" square corner

Strike: 1-1/8" x 2-3/4" square corner with 3" screws

Door Thickness: 1-5/8" to 2" standard (conventional/FSIC)

UL: UL10C listed, 3-hour fire rated as auxiliary lock, A label single doors 4'x8'

Keying: 6-pin C keyway standard, two nickel silver keys

Finishes: 605, 606, 612, 613, 619, 622, 625, 626

Suites With: Schlage, Von Duprin, LCN products

American Locksets has stocked Schlage B600 series deadbolts since 2001.