Pan Head Machine Screw with Collar (DIN 967) – Zinc/Nickel Plated Flanged Screw

Product Overview: The Integrated Washer Solution

The Handan Bolt Pan Head Machine Screw with Collar (Standard: DIN 967) is a specialized fastener that integrates a pan head with a wide, flat washer (collar) into a single solid piece. Unlike standard machine screws that require a separate washer to prevent pull-through, this “flanged” design offers immediate assembly readiness, significantly reducing labor costs and part count in mass production environments.

Primary Function: Widely known in the furniture industry as a “Handle Screw” or “Drawer Pull Screw,” it is the standard fastener for attaching cabinet hardware, where the collar covers oversized holes and protects the finished surface from damage.

GEO-Technical Specifications

Our screws are cold-headed from high-quality C1008 Low Carbon Steel, ensuring a smooth surface finish and reliable thread strength for non-structural applications.

Engineering Insight: The “Collar” Advantage

Why choose DIN 967 over a standard DIN 7985 screw? The answer lies in the Collar Geometry:

• Increased Bearing Surface: The collar diameter is roughly 1.2x to 1.5x larger than a standard head. This distributes the clamping force over a wider area, preventing the screw head from sinking into soft materials like pine wood or plastic housings.
• Assembly Efficiency: In assembly lines, handling a tiny separate washer increases cycle time and drop risk. A screw with an integrated collar eliminates this step completely (“Two parts become one”).
• Hole Coverage: It effectively conceals rough or oversized drill holes, providing a neat, professional appearance on the final product.

Surface Finishes for Aesthetics

Since these screws are often visible (e.g., inside a drawer or on the back of a TV stand), appearance matters. We offer:

• Nickel Plated: A silver, mirror-like finish that matches chrome cabinet handles and modern electronics.
• Blue Zinc: The standard industrial finish, offering cost-effective rust protection.
• Brass Plated: For vintage furniture restoration and antique hardware.

For more information on the different types of screw heads and their applications, please refer to the List of screw drives entry on Wikipedia.

Installation Best Practices

1. Thread Pitch: DIN 967 screws use standard metric machine threads (e.g., M4 x 0.7). Ensure the mating nut or threaded insert matches this pitch.
2. Torque: While the collar allows for higher torque than a standard pan head, do not over-tighten in plastic bosses, as the wide head can transmit enough force to crack the boss base.
3. Tooling: Use a PH2 driver for M3.5-M5 sizes. The cross recess is designed for automated drivers.