Heavy-Duty Commercial Grade Double Cylinder Deadbolt
Engineered for perimeter security applications requiring two-side key control, this Double Cylinder Deadbolt secures doors adjacent to glass panels or where forced-entry resistance is mandated. Manufactured from high-purity solid brass and high-strength zinc alloy components, the lock mechanism undergoes CNC precision machining to maintain strict dimensional tolerances for commercial installation standards.
Standard Compliance: BHMA / ANSI A156.5 Grade 2 certified (tested to 400,000 operational cycles).
Application Scope: Fits standard commercial and residential doors from 35 mm to 50 mm in thickness.
Keying Options: Available in KA (Keyed Alike), KD (Keyed Different), and Master Key (MK) configurations.
Technical Specifications & Parameters
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Specification Category |
Technical Parameter Details |
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Material Composition |
Chassis & Trim: High-grade zinc alloy die-casting Deadbolt: Solid brass core with hardened steel anti-saw internal pin Cylinder Plug & Shell: 100% solid forged brass |
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Backset Dimensions |
Adjustable 60 mm (2-3/8 inches) / 70 mm (2-3/4 inches) latch bolt mechanism |
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Door Thickness Range |
35 mm to 50 mm (1-3/8 to 2 inches) standard; custom spindle bars available for up to 65 mm |
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Deadbolt Throw |
Full 25.4 mm (1-inch) throw with hardened steel roller pin resistant to hacksawing |
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Cylinder System |
5-pin or 6-pin tumbler system; KW1, SC1, or C4 keyway options |
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Surface Finishes |
Satin Chrome (US26D / 626), Polished Brass (US3 / 605), Dark Bronze (US10B / 613), Matte Black (BLK) |
Material & Manufacturing Process
Die-Casting & Structural Integrity
Lock housings are produced using automated 160-ton hot-chamber die-casting machines. This process eliminates internal micro-porosity, ensuring high tensile strength and impact resistance under heavy lateral loads.
CNC Precision Machining
Internal cams, tailpieces, and deadbolt guides are finished on high-speed CNC vertical milling centers. Dimensional accuracy is maintained within plus-minus 0.02 mm, preventing mechanical jamming during high-frequency operation.
Surface Treatment & Corrosion Resistance
All exposed trims undergo multi-layer electroplating:
• Base Layer: Copper plating (15 micrometers) for substrate adhesion.
• Secondary Layer: Nickel plating (8 micrometers) for leveling and moisture barrier.
• Final Finish: PVD coating or protective lacquer.
• Performance: Surpasses 96-hour neutral salt spray test (ASTM B117) without base metal oxidation.
Quality Control & Testing Protocol
Manufacturing consistency is verified through rigorous laboratory testing prior to bulk packaging:
Cycle Testing: Pneumatic endurance test rigs cycle the deadbolt mechanism 400,000 times under load to verify spring tension and latch retraction integrity.
Torque Resistance Test: Applied torque testing on the exterior cylinder to prevent forced wrenching or snapping attacks.
Salt Spray Testing: Continuous monitoring in an accelerated corrosion chamber to validate plating durability for coastal and humid environments.
Go/No-Go Gauging: 100% inline dimension inspection using custom pneumatic gauges on cylinder plugs and keyways.
Application Guidance & Selection Matrix
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Model Series |
Recommended Application |
Door Type Compatibility |
Key Features |
|
DB-201 Series |
Standard Commercial Offices & Retail Back Doors |
Hollow Metal Doors, Solid Wood Doors |
60/70mm adjustable backset, 5-pin brass cylinder |
|
DB-301 Series |
Perimeter Doors with Glass Lites (Multi-Family Housing) |
Aluminum Storefront Doors, Steel Security Doors |
Anti-saw hardened steel pin, 6-pin high-security core |
|
DB-401 Series |
Institutional Facilities (Schools, Healthcare) |
Heavy-Duty Composite Doors, Fire-Rated Doors |
UL-listed fire rating compatibility, master key integration |
Supplier Capability & Manufacturing Infrastructure
Production Capacity: 120,000 units per month across 6 automated assembly lines.
OEM/ODM Support: Custom laser-etched branding, bespoke keyway profiling, and custom master-key charting.
Packaging Options: Individual master box packaging with installation templates, strike plates, mounting screws, and 3 matching brass keys per lock.
Export Compliance: Full documentation provided, including mill test certificates, salt spray reports, and material safety compliance sheets.
Frequently Asked Questions
Q: What is the standard lead time for bulk wholesale orders?
A: Standard production lead time is 25 to 30 days upon order confirmation and deposit receipt. Stock items in standard finishes (US26D, Matte Black) are available for expedited dispatch within 10 business days.
Q: Can these deadbolts be keyed alike for multi-unit projects?
A: Yes. We support Keyed Alike (KA) production runs, as well as complex Master Key (MK) and Construction Keying systems configured to project specifications. All keying charts are archived securely to prevent unauthorized duplication.
Q: Are replacement cylinders available separately for maintenance contracts?
A: Yes. Interchangeable core cylinders and individual replacement tailpieces can be ordered as separate SKU items for facility maintenance and distribution inventory replenishment.
Q: What is the minimum order quantity (MOQ) for custom finishes or branding?
A: The MOQ for custom packaging and laser-etched logo branding is 500 units per order. For non-standard PVD surface finishes, the MOQ is 1,000 units.
Request a Quote & Technical Data Sheet
To receive bulk pricing tiers, CAD drawings, or certified test reports for your project requirements, submit your specifications below:
Required Information: Model Series, Finish Type, Order Quantity, Keying Requirement (KA/KD/MK), Destination Port.
Contact Engineering & Sales: [Insert RFQ Submission Form / Direct Email]