Exterior Door Knobs with Deadbolt combine mechanical reliability with consistent security performance for residential and light commercial entry systems. This lockset integrates a keyed knob and a deadbolt mechanism into a unified solution, ensuring controlled access while maintaining stable operation under frequent use. The internal structure adopts a precision-machined cylinder system with a standard “C” keyway, allowing compatibility with common key management systems. With reinforced latch components and a stainless steel bolt structure, the product maintains smooth engagement and release cycles without instability. The overall configuration aligns with standard door preparation requirements, enabling efficient installation across a wide range of door types. In practical use, the lock delivers a balanced user experience with consistent torque, stable locking feedback, and reliable resistance to forced entry attempts, supporting long-term operational consistency.

1. ANSI Grade 2 Performance

The DDLK012 Exterior Door Knobs with Deadbolt meets ANSI Grade 2 requirements and has been tested to UL 10C. These credentials support building projects that require a defined lock grade and fire-test documentation. Buyers, door manufacturers, and contractors can use the verified specifications for product comparison, hardware submittals, and incoming inspection in residential and medium-traffic commercial applications.

2. Prepared Door Compatibility

The lockset fits a 2-1/8-inch cross bore, a 1-inch edge bore, and a 1-1/8 × 2-1/4-inch latch-face preparation. The Exterior Door Knobs with Deadbolt matches common North American door machining dimensions, allowing factories to drill and route doors before hardware delivery. This compatibility helps limit additional site work, hole misalignment, and installation delays.

3. Two Backset Configurations

DDLK012 uses a 2-3/4-inch backset as standard and offers a 2-3/8-inch alternative for different edge distances and replacement doors. It fits standard door thicknesses from 1-3/8 to 2 inches. Buyers can confirm both dimensions against the door schedule, maintaining a consistent knob appearance while accommodating door batches with different preparation requirements.

4. Five- or Six-Pin Core

The Exterior Door Knobs with Deadbolt can be supplied with a five-pin or six-pin removable core using a Schlage C keyway. Buyers can select the cylinder according to project key quantities and access-control requirements. During tenant turnover, lost-key incidents, or room reassignment, facility teams can replace the core without removing the entire knob set, reducing service time and replacement costs.

5. Threaded Removable Rosettes

The interior and exterior rosettes use threaded connections and can be removed independently for installation adjustment or maintenance. Standard components include a 1-1/8 × 2-1/4-inch square-corner faceplate, a 2-1/4-inch full-lip square-corner strike, and a stainless steel deadbolt with a 1/2-inch throw. These dimensions support accurate alignment between the knob, latch, and door frame.

1. Apartment Unit Doors

Apartment entrances require everyday locking, organized key control, and efficient servicing after resident changes. The Exterior Door Knobs with Deadbolt offers five-pin or six-pin removable cores, allowing property teams to replace only the cylinder. Its 1-3/8 to 2-inch door range and two backset sizes also support centralized purchasing and unit-by-unit installation across multiple buildings.

2. Detached Home Entrances

Front, side, and rear doors of detached homes can use a knob and deadbolt combination for access and locking. DDLK012 includes a stainless steel deadbolt with a 1/2-inch throw and meets ANSI Grade 2 and UL 10C requirements. Threaded interior and exterior rosettes simplify removal, while standard bore dimensions fit common North American residential doors.

3. Hotel Service Rooms

Hotel storage rooms, staff offices, linen rooms, and service areas need clear key permissions and practical component replacement. The Exterior Door Knobs with Deadbolt uses a Schlage C keyway that supports area-based key planning. Its standard faceplate and full-lip square-corner strike also help door manufacturers maintain consistent preparation across large room quantities.

4. Small Commercial Stores

Community shops, studios, and small service businesses can use DDLK012 on office or storage-room doors requiring daily access and locking. ANSI Grade 2 performance suits medium-frequency operation. The standard 2-3/4-inch backset and optional 2-3/8-inch version accommodate new construction and prepared replacement doors, supporting both renovation work and multi-unit purchasing.