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The ISO 7380-2 bolt with a semi-circular head and an internal hexagon with a flange is a special type of fastener that combines the convenience of using an Allen key with the reliability of a flange connection.
Characteristics:
- Head: The semi-circular head provides easy access for the tool, while the internal hexagon prevents wear on the key heads.
- Flange: The flange increases the bearing surface of the bolt, distributing the load over a larger area and preventing rotation in the hole.
- Thread: Metric threads are typically used, but other types may be possible depending on specific requirements.
- Coating: To protect against corrosion and improve appearance, various coatings such as zinc, cadmium, or oxidation are often used.
Dimensions of ISO 7380-2
The dimensions of ISO 7380-2 bolts are regulated by the international standard ISO 7380-2. They include the thread diameter, the length of the threaded part, the length of the smooth part, and the dimensions of the head, hexagon, and flange. The specific dimensions depend on the purpose of the bolt and are selected according to technical requirements.
Strength Class of ISO 7380-2
The strength class of ISO 7380-2 bolts 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 ISO 7380-2
ISO 7380-2 bolts belong to the group of fasteners that provide a non-separable connection of parts. They are used with a nut of the appropriate size and strength class.
Materials for the Manufacture of ISO 7380-2
Carbon steel with alloying additives that increase strength and corrosion resistance is most often used for the manufacture of ISO 7380-2 bolts. Stainless steel and other special alloys can also be used for work in aggressive environments.
Scope of Application of ISO 7380-2
ISO 7380-2 bolts are widely used in various industries:
- Mechanical engineering: for connecting parts of machines and mechanisms operating under high loads.
- Automotive industry: for fastening body elements, chassis, and engine.
- Construction: for the assembly of metal structures, bridges, and supports.
- Energy: for connecting elements of energy equipment.
Advantages of using ISO 7380-2 bolts:
- Reliability: Due to its design, the bolt provides a strong and reliable connection of parts.
- Vibration resistance: The flange increases the bearing surface and prevents self-loosening.
- Durability: High-quality materials and precise manufacturing ensure a long service life.
- Versatility: Used in various industries.
The use of ISO 7380-2 bolts allows creating strong, reliable, and durable connections, which is important for ensuring the safety and efficiency of various mechanisms and structures.
