The DIN 7500 D screw is a versatile fastening element that combines the functions of a screw and a press-in washer. Its design includes a hexagonal head for tightening with a wrench, a threaded part for creating a connection, and a press-in washer that provides additional pressure on the part and prevents rotation.
Key Features:
- Hexagonal head: Ensures secure tightening with a hex key.
- Press-in washer: The built-in press-in washer, with or without threads, distributes the load over a larger area, preventing rotation and material deformation.
- Thread: Metric thread is typically used, but other types may be possible depending on specific requirements.
- Material: Usually made of steel, but can be made of stainless steel or other materials, depending on operating conditions.
- Coating: To protect against corrosion and improve appearance, various coatings such as zinc, cadmium or oxidation are often used.
DIN 7500 D Dimensions
The dimensions of DIN 7500 D screws are regulated by the international standard DIN 7500 D. They include thread diameter, thread length, smooth length, head dimensions, hexagon, and press-in washer. The specific dimensions depend on the purpose of the screw and are selected according to technical requirements.
Strength Class of DIN 7500 D
The strength class of DIN 7500 D screws is determined by its ability to withstand various types of loads. The most common strength classes are:
- 8.8: Used for general construction and in mechanical engineering.
- 10.9: Used for connections subjected to high loads, such as in structures operating under dynamic conditions.
- 12.9: Used for especially critical connections requiring maximum strength and reliability.
Fastener Group DIN 7500 D
DIN 7500 D screws belong to the group of fasteners that provide a non-separable connection of parts. They are used independently, without additional nuts, thanks to the presence of a press-in washer.
Materials for the Manufacture of DIN 7500 D
Carbon steel with alloying additives that increase strength and corrosion resistance is most often used for the manufacture of DIN 7500 D screws. Stainless steel and other special alloys can also be used for work in aggressive environments.
Scope of Application of DIN 7500 D
DIN 7500 D screws are widely used in various industries:
- Mechanical engineering: for connecting thin sheets of metal, plastic parts, and other materials.
- Automotive industry: for fastening interior elements, upholstery, and other parts.
- Furniture industry: for connecting wooden and metal elements of furniture.
- Electrical engineering: for fastening electrical components.
Advantages of using DIN 7500 D screws:
- Versatility: Can be used for various materials and types of connections.
- Reliability: Provides a strong and reliable connection of parts.
- Installation speed: Does not require the use of additional tools and nuts.
- Aesthetic appearance: Can be used for decorative purposes.
The use of DIN 7500 D screws allows creating strong, reliable, and durable connections, which is important for ensuring the safety and efficiency of various mechanisms and structures.
