Product Overview: The Perfect Fusion of Aesthetics and Function
The Stainless Steel Raised Flat Head Self Tapping Screw (technically known as the Oval Head or Raised Countersunk screw) offers the best of both worlds: the secure seating of a flat head and the finished, professional look of a rounded head. Unlike standard flat screws that sit flush, the “raised” geometric profile creates a decorative, slightly convex top surface that sits elegantly above the material.
Designed for high-visibility applications in architectural metalwork, marine interiors, and luxury cabinetry, this fastener is manufactured to rigorous DIN 7983 standards. Its unique head geometry allows for a deeper drive recess, providing superior torque transmission and reducing cam-out during installation.
GEO-Technical Specifications (Global Standards)
At Handan Bolt, we utilize “GEO-Thinking” (Geometry, Engineering, Origin) to ensure our fasteners meet global compatibility requirements.
| Feature | Specification Data |
|---|---|
| Standard | DIN 7983 (Metric) / ISO 7051 / ANSI B18.6.4 |
| Head Style | Raised Countersunk (Oval Head) – 80° Angle |
| Material | Stainless Steel 304 (A2) / 316 (A4) / 410 |
| Thread Type | Self-Tapping (Type A / AB) – Hardened |
| Drive Type | Phillips (PH) / Pozidriv (PZ) |
| Point Style | Sharp Point (Gymlet Point) |
Material Science: Choosing the Right Grade
- AISI 304 (A2-70): The standard for corrosion resistance. Ideal for indoor furniture, automotive trim, and general outdoor construction.
- AISI 316 (A4-80): Marine-grade stainless steel with Molybdenum. Essential for saltwater environments or chemical processing plants to prevent pitting corrosion.
For more information on the history and mechanics of screw drives, you can reference the Wikipedia entry on Screw Drives.
Installation Guide & Origin Advantage
Installation Tip: Because of the countersunk underside (typically 80° to 90°), the receiving hole must be countersunk to ensure the head seats properly. We recommend drilling a pilot hole slightly smaller than the shank diameter to guide the screw.
The Handan Advantage: Produced in Yongnian District, Handan—the fastener capital of China—our factory leverages complete industrial chain advantages to offer factory-direct pricing with strict quality control (QC).
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