The Raised Countersunk Head Machine Screw (manufactured to DIN 966 / ISO 7047 standards) is the fastener of choice when aesthetics matter. Also known as an “Oval Head” screw, the Raised Countersunk Head Machine Screw features a classic countersunk bearing surface that sits inside the material, topped with a decorative domed head that protrudes slightly above the surface, providing a sophisticated, finished look compared to standard flat screws.
Product Overview: Our Raised Countersunk Head Machine Screw is precision-forged from polished Stainless Steel A2 (304) or A4 (316). It combines the flush-mounting strength of a countersunk screw with the visual appeal of a pan head, making it ideal for visible applications on switch plates, door hardware, and marine cabinetry.
Raised Countersunk Head Machine Screw Specifications
| Product Name | Raised Countersunk Head Machine Screw / Oval Head Screw |
| Standard | DIN 966 (Metric) / ISO 7047 |
| Material Grade | Stainless Steel A2 (304) / A4 (316) |
| Head Style | Raised Countersunk (90° Cone with Rounded Top) |
| Drive Type | Cross Recess (Phillips / Pozidriv) |
Engineering Insight: Why choose “Raised” over “Flat”?
Designers specify the Raised Countersunk Head Machine Screw for two main reasons:
- Aesthetics: A standard Flat Head screw (DIN 965) must be installed perfectly flush. If it is sunk too deep, it looks like a hole; if it sticks out, it feels sharp. The Raised Countersunk Head Machine Screw is designed to stick out, so slight variations in countersink depth are less noticeable, and the rounded top feels smooth to the touch.
- Washer Compatibility: These screws are frequently used with “Cup Washers” or “Finishing Washers.” The rounded head nests perfectly inside the concave washer, creating a professional, heavy-duty appearance often seen on boat decks and vintage electronics.
For more details on screw head styles, please refer to the Screw head shapes entry on Wikipedia.
Material Guide: A2 vs A4
- A2 (304): Standard for interior design, lighting fixtures, and architectural trim.
- A4 (316): Mandatory for exterior use and marine applications to prevent rust weeping that would ruin the decorative finish.
Frequently Asked Questions (FAQ)
Q: What is the countersink angle?
A: For metric DIN 966 screws, the angle is 90 degrees. This is compatible with standard metric countersink drill bits.
Q: Is this the same as a Truss Head?
A: No. A Truss Head is flat on the bottom (like a Pan Head). A Raised Countersunk Head Machine Screw is conical on the bottom and must sit in a countersunk hole.
Need Decorative Screws?
Handan Bolt specializes in high-polish Raised Countersunk Head Machine Screws. We ensure a mirror-like finish for your premium products.
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