Introduction:

DIN 85 is a standard that specifies the technical requirements for pan head screws. It is one of the many standards created by the Deutsches Institut für Normung (DIN), a German organization that develops standards for various industries. The DIN 85 standard provides a set of specifications for the design, dimensions, and materials of pan head screws, which are commonly used in various industries for different applications.

In this blog post, we will explore the DIN 85 standard in detail, including its history, the technical specifications, and its applications in various industries.

History of DIN 85:

The DIN 85 standard was first introduced in 1927 by the DIN organization, which was founded in 1917. The DIN 85 standard was initially created to standardize the design and dimensions of pan head screws for use in various industries. The standard has since been updated several times to reflect changes in technology, materials, and industry requirements.

Technical Specifications of DIN 85: The DIN 85 standard specifies the technical requirements for pan head screws, including their design, dimensions, and materials. Here are some of the key technical specifications of DIN 85:

  1. Design: The pan head screw has a cylindrical shank with a flat, circular head that has a slight dome shape. The head of the screw is slightly larger than the shank and has a flat bearing surface with a low profile. The underside of the head is curved to provide a more significant contact area between the screw head and the workpiece.

  2. Dimensions: The DIN 85 standard specifies the dimensions of pan head screws in terms of thread size, thread pitch, length, and head diameter. The standard covers screw sizes ranging from M1.6 to M24, with lengths from 3mm to 300mm.

  3. Materials: The DIN 85 standard allows for pan head screws to be made from a range of materials, including steel, stainless steel, brass, and nylon. The standard specifies the minimum strength requirements for screws made from each material, ensuring that they are strong enough to withstand the stresses of the intended application.

Applications of DIN 85:

Pan head screws are used in a wide range of applications across various industries. Here are some of the most common applications of DIN 85 pan head screws:

  1. Automotive Industry: Pan head screws are commonly used in the automotive industry to attach various components such as engine parts, door hinges, and interior trim. The low profile head of the screw allows for a flush fit, reducing the risk of snagging or catching on other components.

  2. Electronics Industry: Pan head screws are used in the electronics industry to secure circuit boards, components, and other parts. The low profile head of the screw allows for a compact and neat design, which is essential in electronics applications.

  3. Construction Industry: Pan head screws are used in the construction industry for various applications, including attaching drywall to studs, securing roof panels, and fixing metal frames. The screws' strength and low profile head make them ideal for these applications, providing a secure and neat finish.

  4. Furniture Industry: Pan head screws are commonly used in the furniture industry to attach various components such as hinges, drawer slides, and handles. The low profile head of the screw provides a neat finish and reduces the risk of snagging or catching on other components.

Advantages of DIN 85:

The DIN 85 standard offers several advantages, including:

  1. Standardization: The DIN 85 standard ensures that pan head screws are designed and manufactured to the same technical specifications, regardless of the manufacturer. This standardization ensures that the screws are compatible with other components and materials, reducing the risk of compatibility issues.

  1. Durability: The DIN 85 standard specifies the minimum strength requirements for screws made from different materials, ensuring that they are durable enough to withstand the stresses of the intended application. This improves the overall reliability and safety of the application.

  2. Low Profile Head: The low profile head of pan head screws provides a neat and flush finish, reducing the risk of snagging or catching on other components. This feature is particularly important in applications where aesthetics are important, such as in the furniture and electronics industries.

  3. Compatibility: The DIN 85 standard ensures that pan head screws are compatible with other components and materials, reducing the risk of compatibility issues. This improves the overall efficiency and effectiveness of the application.

  4. Easy Installation: Pan head screws are easy to install and remove, reducing the time and effort required to complete a task. This improves the overall productivity and efficiency of the application.

Disadvantages of DIN 85:

While the DIN 85 standard offers several advantages, it also has some disadvantages, including:

  1. Limited Applications: The DIN 85 standard is limited to the design, dimensions, and materials of pan head screws, which may not be suitable for all applications. For example, applications that require a countersunk screw or a different head shape may require a different standard.

  2. Regional Differences: The DIN 85 standard is a German standard, which may not be widely recognized or used in other regions. This may lead to compatibility issues or difficulties in sourcing the required screws.

  3. Cost: The DIN 85 standard may result in higher costs for manufacturers and users, as the screws must meet specific technical specifications and undergo testing to ensure compliance with the standard

Here is a dimension and weight chart for DIN 85 pan head screws:

Nominal Diameter Pitch Head Diameter (d) Head Height (k) Length (l) Weight per 1000 pieces (kg)
2 0.4 4 1.5 4-25 0.007 - 0.03
2.5 0.45 5 2 4-30 0.012 - 0.048
3 0.5 6 2.5 4-35 0.02 - 0.069
4 0.7 8 3 5-50 0.039 - 0.138
5 0.8 10 3.5 6-60 0.077 - 0.256
6 1 12 4 6-80 0.14 - 0.446
8 1.25 16 5 8-100 0.332 - 0.928
10 1.5 20 6 10-120 0.65 - 1.61
12 1.75 24 7 12-140 1.12 - 2.44

Note: The dimensions and weights provided in this chart are for reference purposes only and may vary depending on the manufacturer and the specific requirements of the application. It is always recommended to consult the manufacturer's specifications before selecting and using any fastener.

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