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Pin-in-Pin Double Cylinder Lock with Dimple Key

The pin-in-pin double cylinder features a solid brass construction and a 5×2 telescopic pin tumbler mechanism (Φ4.0 mm outer and Φ2.0 mm inner pins). Operating with dimple keys, it incorporates standard physical anti-drilling pins in the housing and plug, with specialized anti-picking structures integrated on driver pins 3 and 4. Available for commercial B2B procurement with optional master key and construction key configurations.

Pin-in-Pin-Double-Cylinder-Lock-with-Dimple-Key-2

Technical Specifications

ParameterSpecification Details
Model TypePin-in-Pin Double Cylinder
Profile DimensionsStandard Profile: 32.85 x 16.85 x 9.85 mm (Length configurations available)
Housing / Plug MaterialSolid Brass / Solid Brass
Pin Mechanism5×2 Telescopic Key Pins + 5 Driver Pins
Key Pin DiametersOuter Pin: Φ4.0 mm / Inner Pin: Φ2.0 mm
Key Pin Lengths5.2 / 5.65 / 6.15 / 6.65 mm
Key Pin Step0.5 mm
Hole DiametersKey Pin Hole: Φ4.1 mm / Driver Pin Hole: Φ4.2 mm
Driver Pin Specifications5 Pins (Diameter: Φ4.0 mm; Pins #3 and #4 with anti-picking structures)
Anti-Picking ProtectionCombination spool key pins; Driver pins #3 and #4 anti-pick design
Standard FinishPearl Nickel
Key TypeDimple Key / Computer Key
Key Quantity & Style5 Keys, H11 Plastic Head
Key MaterialNickel Silver or Full Brass (Selectable)
Cam / Clutch MaterialPowder Metallurgy Iron-based
Cam Style10-Teeth Gear (Selectable)
Mounting HardwareM5x80 Installation Screw

Core Configurations & Applications

Hardware Specifications

  • 5×2 Telescopic Pin Architecture: Features 5 external key pins (Φ4.0 mm) paired with 5 internal key pins (Φ2.0 mm) operating against 5 driver pins (Φ4.0 mm). The pin step is 0.5 mm, with pin lengths of 5.2, 5.65, 6.15, and 6.65 mm. The driver pin hole diameter is calibrated to Φ4.2 mm.
  • Multi-Point Anti-Picking Protection: Incorporates combination spool key pins, complemented by driver pins #3 and #4 engineered with dedicated anti-picking structures.
  • Anti-Drilling Components: Standard physical anti-drilling pins installed in the housing (1 pin per side, Φ1.5 x 15 mm) and in the brass plug (1 pin per side, Φ1.5 x 4 mm).
  • Clutch and Gear Mechanism: Features a powder metallurgy iron-based clutch and an optional 10-teeth gear.
  • Dimple Keys: Supplied with 5 dimple keys with H11 plastic heads, selectable in nickel silver or full brass.

Primary Application Environments

  • Commercial & Medium-to-Large Scale Projects: Designed for commercial access points requiring dual telescopic shear-line pin configurations.
  • Institutional Facilities: Suitable for facility access control requiring integration into Master Key Systems or staged construction key setups.
  • Residential Perimeter Doors: Applicable for exterior doors requiring double-sided key operation within standard Euro profile mortise lockcases.

Optional Configurations & Key Systems

Optional Hardware Features

Based on project specifications, the following options can be added:

  • Construction Key Option: Keying configuration enabling temporary contractor access during construction, disabled upon first use of the master/owner key.
  • Anti-Bumping: Optional internal pin configuration.
  • Anti-Snap (Sacrificial Cut): Optional grooved design specifying breaking points.
  • Anti-Breaking: Optional reinforced structural additions.
  • Double-Entry Function: Optional mechanism allowing external key operation while a key is engaged on the inside.

Keying Platforms

  • Keyed Different (KD): Each lock cylinder operates with an independent set of keys.
  • Keyed Alike (KA): Multiple cylinders operate with a single key.
  • Master Key System (MKS): Multi-tier master key configurations for facility management.

B2B Procurement & Export Terms

  • Minimum Order Quantity (MOQ): Please consult our commercial department for specific finish, length, and upgrade combinations.
  • Production Lead Time: Dependent on order volume and master keying specifications (typically 30 to 45 days).
  • Samples: Physical cylinder prototypes are available for fitment testing and evaluation.
  • Incoterms & Shipping: FOB Ningbo, Shanghai, or Tianjin. Packaged in standard industrial cartons.
  • Technical Data: 2D and 3D CAD files are available for OEM partners to assist with lockcase integration.

Manufacturing Information

Beijing Oupuoptic Instrument Co., Ltd. was founded in Tongzhou District, Beijing, in 2001. In 2019, the company expanded operations by establishing Zhejiang Guocheng Technology Co., Ltd. in Zhejiang province, which includes a dedicated lock cylinder manufacturing facility.

  • Manufacturing Facility: A 5,000-square-meter facility equipped for lock cylinder and hardware production.
  • Workforce: Supported by a dedicated team of over 100 professionals.
  • Quality System: Operations are conducted under the ISO9001 international quality system certification.
  • Product Focus: The lock factory specializes in independent research, product design, and the precision manufacturing of European and American standard lock cylinders.

Frequently Asked Questions

A pin-in-pin mechanism utilizes concentric internal and external pins (in this model, Φ4.0 mm outer and Φ2.0 mm inner). Both the inner and outer pins must be aligned simultaneously at the cylinder plug shear line by the dimple key to allow operation.

Standard anti-picking configurations include combination spool key pins, as well as driver pins #3 and #4, which are engineered with specific anti-picking mechanical profiles.

No. Physical anti-drilling pins and the designated anti-picking pin configurations are standard. Anti-snap (sacrificial cut), anti-bumping, anti-breaking, and construction key systems are available as optional configurations upon request.

Yes, the 5×2 telescopic pin configuration supports Master Key Systems. Contact our engineering department with your keying matrix for specifications.

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