Product Overview & Quick Specification Matrix
This interchangeable core deadbolt cylinder provides rapid core extraction and replacement via a control key, eliminating the need to disassemble deadbolt chassis or remove lock bodies during re-keying operations. Built for commercial, institutional, and multi-tenant access control infrastructure.
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Specification Parameter |
Engineering Detail |
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Core Type |
Small Format Interchangeable Core (SFIC) / Large Format (LFIC available upon request) |
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Pin Configuration |
6-Pin / 7-Pin Standard (A2, A4, or A8 pinning systems) |
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Housing Material |
Extruded solid brass shell; precision-broached solid brass plug |
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Pin Materials |
Nickel silver bottom pins; stainless steel top pins and springs |
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Standard Finishes |
US26D (Satin Chromium), US3 (Bright Brass), US10B (Dark Oil-Rubbed Bronze) |
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Compliance Standards |
Engineered to meet ANSI/BHMA A156.5 Grade 1 auxiliary lock criteria and UL 437 physical attack resistance benchmarks |
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Operating Torque |
<= 1.2 Nm operational torque under standard load |
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Cycle Durability |
Tested to exceed 1,000,000 operational cycles |
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Keying Options |
Keyed Alike (KA), Keyed Different (KD), Master Keyed (MK), Construction Keyed |
Product Selection & Technical Parameters
Proper selection requires matching core format, keyway profile, and pin count to existing hardware architecture.
Step 1: Select Core Format & Pin Count
• SFIC 6-Pin: Standard commercial footprint; accommodates standard facility master-key charts with up to 16,384 theoretical key changes per series.
• SFIC 7-Pin: High-security institutional tier; provides extended master-keying capacity for complex campus hierarchies.
Step 2: Select Keyway Compatibility
Standard keyways available off-the-shelf. Factory supports custom restricted profiles under authorized letter of authorization (LOA).
• Standard Open Keyways: A, B, C, D, E, F, G, H, J, K, L, M
• Restricted Keyways: Proprietary patent-protected side-bar and undercut profiles available for OEM and institutional distribution.
Step 3: Select Finish & Tailpiece Configuration
• Deadbolt Compatibility: Standard mortise cam / tailpiece configurations compatible with major deadbolt brands (Schlage, Corbin Russwin, Yale, Sargent housing formats).
Application & Operational Assessment
Designed for environments requiring high-frequency access adjustments and strict audit control.
Educational & Healthcare Facilities: Enables facilities teams to swap compromised or lost cores in under 10 seconds using a control key, bypassing external locksmith dispatch costs.
Property Management & Rental Portfolios: Facilitates instantaneous unit turnover re-keying without replacing mechanical deadbolt deadlatch assemblies.
Critical Infrastructure & Utility Enclosures: Secures remote telecom, power, and transit assets requiring master-keyed hierarchical access control.
Manufacturing Process & Quality Control
Material & Machining Standards
• Casting & Extrusion: Shells and plugs manufactured from CW614N / C38500 architectural extruded brass bars, eliminating porosity defects common in zinc die-cast equivalents.
• CNC Broaching: Plug shear lines broached on multi-axis CNC rotary transfer machines to maintain plug-to-shell clearance tolerances within 0.012 mm.
• Pin Machining: Nickel-silver bottom pins CNC-lathed and tumbled to eliminate burrs, ensuring smooth engagement with jagged key cuts.
Testing & Verification Protocols
• Plug Pull Testing: Withstands axial pulling forces exceeding 2,500 N before structural compromise of the control lug mechanism.
• Pick & Bump Resistance: Standard integration of mushroom and spool driver pins to resist manual picking and bump-key manipulation.
• Salt Spray Corrosion Testing: ASTM B117 neutral salt spray certified for 96 hours minimum without surface pitting or finish degradation on US26D finishes.
Supplier Verification & Commercial Terms
Production Capacity: 4 automated assembly lines yielding an output capacity of 80,000 cylinders monthly.
Minimum Order Quantity (MOQ):
• Standard Keyways / Stock Finishes: 500 units per batch.
• Custom Keyways / Restricted Profiles: 2,000 units initial run (includes tooling verification).
Packaging: Individual blister or industrial bulk compartmentalized trays (50 units/box) to prevent plug rotation during transit.
Lead Time: 25-30 business days for standard production orders; expedited emergency replenishment programs available for contracted distributors.
Frequently Asked Questions
Q: Are these cylinders compatible with existing third-party SFIC housings (e.g., Best or Arrow)?
A: Yes. Dimensions adhere strictly to standard SFIC dimensional envelopes and comply with ANSI/BHMA A156.5 Grade 1 geometric standards, ensuring drop-in compatibility with any housing designed to accept standard 6-pin or 7-pin SFIC cores.
Q: Can these cylinders be integrated into an existing master key system?
A: Yes. Cylinders can be unpinned (builder's pack), factory pinned to your specific bitting list, or supplied with master-key charts calculated to prevent key code overlapping.
Q: What is the exact difference between the operating key and the control key?
A: The operating key rotates the plug 360 degrees to retract or project the deadbolt bolt. The control key inserts into the core and rotates approximately 15 degrees in the opposite direction to release the control retaining lug, allowing the entire core to be extracted from the housing.
Q: What documentation is provided for batch shipments?
A: Each shipment includes dimensional inspection reports, material composition certificates (Mill Test Certificates for brass stock), and bitting lists (when factory-keyed orders are specified).