DIN 85 specifies slotted pan head screws, a common type of machine screw used in various fastening applications. These screws feature a low, rounded head with a slotted drive, allowing for easy installation and removal with a flathead screwdriver. The pan head design offers a low profile while still providing a good bearing surface.
Key Features of DIN 85 Screws
- Head Type: Pan head (low, rounded)
- Drive Type: Slotted (compatible with flathead screwdrivers)
- Thread Type: Metric coarse thread
- Material Options: Available in steel (plain, zinc-plated), stainless steel (A2, A4), brass, and other corrosion-resistant materials
- Sizes: M1.6 to M20 (and sometimes larger)
Applications of DIN 85 Screws
DIN 85 screws are widely used in:
- Electronics: Fastening components in electronic devices and equipment.
- General Assembly: Joining parts in various manufacturing and assembly processes.
- Woodworking: Securing components in woodworking projects (though other screw types are often preferred for primary wood-to-wood connections).
- DIY Projects: Used in home repairs and various DIY applications.
- Light Machinery: Suitable for lighter machinery and equipment where a low-profile head is desired.
Technical Specifications and Dimensions
Below is a standard size chart for DIN 85 slotted pan head screws. It’s crucial to consult the full DIN 85 standard document for the most accurate and up-to-date information, as these are typical values and variations can exist.
| Thread Size (M) | Head Diameter (d1) mm | Head Height (k) mm | Slot Width (n) mm | Slot Depth (t) mm |
|---|---|---|---|---|
| M1.6 | 3.0 | 1.0 | 0.6 | 0.4 |
| M2 | 3.8 | 1.2 | 0.8 | 0.5 |
| M2.5 | 4.5 | 1.6 | 1.0 | 0.6 |
| M3 | 5.5 | 2.0 | 1.2 | 0.7 |
| M4 | 7.0 | 2.8 | 1.6 | 0.9 |
| M5 | 8.5 | 3.5 | 2.0 | 1.2 |
| M6 | 10.0 | 4.0 | 2.5 | 1.4 |
| M8 | 13.0 | 5.5 | 3.0 | 1.8 |
| M10 | 16.0 | 7.0 | 3.5 | 2.2 |
| M12 | 18.0 | 8.0 | 4.0 | 2.5 |
| M16 | 24.0 | 10.0 | 5.0 | 3.2 |
| M20 | 30.0 | 12.0 | 6.0 | 4.0 |
Related Standards
For related information, consider these other fastener standards:
- DIN 84: Slotted Cheese Head Screws – A similar slotted drive screw with a cylindrical cheese head.
Conclusion
DIN 85 slotted pan head screws are versatile fasteners used in a wide range of applications. Their low-profile head and slotted drive make them suitable for general assembly and repair work. Always consult the official DIN 85 standard document for precise specifications before use.
Important Notice on Standards Validity
This information is for reference purposes only. Always consult official sources and the latest versions of standards to ensure compliance with current regulations. Standards can be updated or withdrawn, so verification is essential. Check with recognized engineering and standardization organizations (ISO, DIN, ANSI, ASME, etc.) for the most current and applicable standards. Regulations and industry requirements can vary by region and application.