Technical Specifications
| Parameter | Specification Details |
| Model Type | Euro Profile Cylinder with Knob (Thumbturn Cylinder) |
| Profile Dimensions | 32.8 x 16.8 x 9.8 mm (Standard Euro Profile) |
| Standard Overall Length (L) | 60 mm (Scalable / Optional) |
| Dimension A / B | 30 mm / 30 mm (30–60 mm Optional per side) |
| Housing Material | Die-Cast Zinc Alloy |
| Plug Material | Zinc Alloy / Solid Brass (Selectable) |
| Knob Specification | K7 Style (Optional) |
| Pin Tumbler Count | 5 / 6 Pins (Single side, Optional) |
| Pin Material | Solid Brass |
| Key Platform | Vertical Key (Edge-cut) / Dimple Key (Reversible) |
| Key Material | Solid Brass (Optional) |
| Standard Key Supply | 3 Keys (Optional) |
| Key Head Styles | H4, H7, or OEM Custom Head (Selectable) |
| Cam Specification | Sintered Steel Cam (Powder metallurgy, Optional) |
| Fixing Screw | M5 x 55 mm (40–80 mm Optional) |
| Available Finishes | Satin Nickel, Polished Chrome, Matt Chrome, Gold, Matt Black, Antique Brass |
Core Configurations & Applications
Hardware Specifications
- Zinc Alloy Housing with K7 Knob: Precision die-cast zinc alloy housing conforming to standard Euro profile DIN dimensions (32.8 x 16.8 x 9.8 mm), paired with an interior K7 cylindrical thumbturn knob featuring a sculpted thumb scoop for comfortable manual operation.
- Brass Pinning Architecture: Features solid brass pin tumblers (available in 5-pin or 6-pin configurations) to provide reliable key engagement and smooth rotation, operating with either an economical zinc alloy plug or an upgraded solid brass plug.
- Symmetrical & Asymmetrical Dimensions: Standard symmetrical 60 mm length (30/30 mm), with barrel dimensions A (exterior keyed side) and B (interior thumbturn side) individually scalable from 30 mm to 60 mm to match varying door thicknesses and escutcheon projections.
- Dual Key Platform Compatibility: Accommodates traditional vertical edge-cut keys or modern flat dimple keys, supplied with 3 keys standard. Key bows are available in H4 (asymmetric flared), H7 (square with rounded corners), or customized OEM profiles.
- Sintered Steel Cam: Driven by a wear-resistant sintered steel cam (powder metallurgy) designed for reliable latch and deadbolt actuation, secured via an M5 fixing screw (lengths available from 40 mm to 80 mm).
Primary Application Environments
- Residential Entry Doors: Provides secure keyed exterior entry combined with convenient interior thumbturn egress without requiring a key to exit.
- Multi-Family & Rental Housing: Practical, budget-conscious hardware solution for apartment doors, private suites, and interior partitions requiring interior privacy locking.
- Pre-Hung Door Manufacturing Facilities: Ideal for door fabricators and modular building factories requiring standardized Euro profile hardware with reliable batch consistency.
Optional Configurations & Customization
Modular Component & Material Selections
Based on specific project specifications, the following options can be customized:
- Plug Material: Standard zinc alloy for competitive pricing, or solid brass for enhanced cycle durability.
- Knob Integration: Fitted with the ergonomic K7 cylindrical scooped knob as an option, matching the cylinder finish.
- Pin Count: 5-pin setup for standard lock programs, or 6-pin setup for higher combination capacity.
- Key Customization: Supplied with 3 keys standard; optional brass key materials and custom-stamped OEM key heads (H4, H7).
- Dimensional Offsets: Configurable overall lengths ranging from 60 mm (30/30 mm) up to 120 mm (60/60 mm), including asymmetrical offsets (e.g., 30/40 mm, 35/45 mm, 40/50 mm).
- Architectural Surface Finishes: Electroplated and coated finishes available in Satin Nickel, Polished Chrome, Matt Chrome, Gold, Matt Black, and Antique Brass to coordinate with exterior and interior door handles.
B2B Procurement & Export Terms
- Minimum Order Quantity (MOQ): Please consult our commercial department for specific finish, length, and plug material combinations.
- Production Lead Time: Typically 30 to 45 days depending on batch volume and custom dimensional requirements.
- Samples: Physical cylinder samples are available for hardware integration and dimensional verification by trade buyers.
- Incoterms & Shipping: FOB Ningbo, Shanghai, or Tianjin. Packaged in standard export cartons with protective individual wrapping.
- Technical Data: 2D CAD engineering drawings available for door fabricators and lock manufacturers.
Manufacturing Information
Beijing Oupuoptic Instrument Co., Ltd. began operations in Tongzhou District, Beijing, in 2001, and established Zhejiang Guocheng Technology Co., Ltd. in Zhejiang province in 2019 to handle high-volume lock and hardware exports.
- Manufacturing Facility: A 5,000-square-meter modern facility equipped with precision tooling and automated machining centers.
- Workforce: A dedicated workforce of over 100 professionals focusing on exacting tolerances and hardware consistency.
- Quality System: Certified under the ISO9001 quality management system, ensuring rigorous material verification and batch-to-batch alignment.
Frequently Asked Questions
The K7 knob features a solid cylindrical barrel body with a deeply sculpted circular concave thumb scoop, engineered to provide comfortable, non-slip finger traction during daily manual locking and unlocking.
Yes. Both the exterior keyed side (A) and the interior thumbturn side (B) can be independently ordered from 30 mm to 60 mm (e.g., 30/40 mm, 35/45 mm, 30/50 mm) to suit non-centered mortise lockcases and varying door panel depths.
The cylinder body and matching K7 knob can be supplied in six surface treatments: Satin Nickel, Polished Chrome, Matt Chrome, Gold, Matt Black, and Antique Brass to match diverse architectural door handle suites.
