Wholesale 4-Inch Bridge Type Iron Frog Hinge

Wholesale 4-Inch Iron Frog Hinge (Bridge Hinge)

Durable 4-inch iron frog hinge for easy, no-drill installation. Available in normal and soft-close versions. 50,000+ cycle tested. Ideal for small-scale projects.

Product Overview

The 4-Inch Iron Frog Hinge (also known as a Bridge Hinge) is a specialized hardware solution designed for simplicity and versatility.

Unlike traditional European hinges, the frog hinge requires no hole drilling (boring), making it exceptionally easy to install on any flat surface. Its unique “bridge” structure provides a stable pivot point, ensuring consistent performance across multiple doors.

Whether used in compact residential spaces or light commercial applications, this hinge offers a low-profile, high-efficiency mounting solution.

Key Features

• No-Drill Installation
  A 100% “hole-free” design that mounts directly to the surface. Eliminates the need for 35mm cup-boring, saving equipment costs and labor time.

• Perfect for Thin Panels
  With 0mm boring depth required, it is the ideal solution for thin door panels (10-15mm) where standard cup hinges cannot be used.

• Bridge-Type Stability
  The heavy-duty iron bridge structure ensures even weight distribution and consistent door alignment without the need for a recessed cup.

• Flexible Functional Variants
  Available in Normal, Soft-close, and Without Spring configurations to match different project budgets and closing requirements.

• On-site Efficiency
  Simplifies assembly and retrofitting, making it perfect for custom furniture and projects requiring precise door gaps without heavy machinery.

Applications

• Compact Residential Projects: Ideal for small cabinets, medicine chests, and built-in storage where door thickness is limited.

• Commercial Displays: Frequently used in retail kiosks and lightweight display cases that require quick assembly.

• Custom Furniture & Renovations: The perfect “troubleshooter” hinge for unique door shapes or projects requiring precise door gap and panel alignment without heavy machinery.

• RV & Marine Cabinetry: Its surface-mount design is highly effective in space-constrained mobile environments.

Customization & Configuration Options

This product is manufactured based on standardized models to ensure stable quality and reliable lead times. We offer clearly defined configuration options, including:

• Functionality Selection: Choose between Normal, Soft-close, or Without Spring based on your target price point and end-user needs.

• Packaging: Options include Bulk industrial packing for high-volume factories or individual retail polybags.

• Branding: OEM logo stamping on the hinge arm is available for qualifying wholesale orders.

Quality & Testing

• Batch inspection during production

• Performance and durability testing available

Reference standards:

• Salt Spray testing: Passes a 24-hour neutral salt spray test, providing reliable oxidation resistance for standard indoor environments.

• Cycle Testing: Certified for over 50,000+ cycles, ensuring the internal pivot points withstand years of daily operation.

For detailed specifications, available configurations, or OEM project references, please contact us for more information or sample support.