Bolt DIN 7991 M4x30 8,8 zinc
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Specifications |
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| Article no. |
7991-4-30-8,8ц |
| Fastening group | High-strength fastening |
| Standard | DIN 7991, ISO 10642 |
| Material | Stal |
| Strength class | 8.8 |
| Coating | Zinc |
| Diameter, mm | 4 |
| Length, mm | 30 |
| Packaging, pcs. | 500 |
| Head | Hidden |
| Type of carving | Full, Partially |
| Slot | Hexagonal (INBUS) |
| Thread type | Metric |
| Threading step, mm | 0.7 |
| Turnkey size, mm | 2.5 |
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Overview
DIN 7991 countersunk head bolt with internal hexagon is an excellent solution for applications where it is important that the bolt head is flush with the surface or below it. Due to its flat shape, this bolt provides not only a secure connection, but also an aesthetic appearance of the finished product. It is used in various fields, including mechanical engineering, furniture industry, as well as in the production of appliances and metal structures. It has a strength class of 8.8, which makes it suitable for use in conditions of increased loads. The internal hexagon drive ensures ease of installation even in hard-to-reach places, making this bolt a versatile and practical choice for professionals.
Areas of application
DIN 7991 countersunk head bolts with internal hexagon are the ideal solution for applications where it is important to ensure a smooth surface after installation. These bolts are widely used in industries such as furniture manufacturing, mechanical engineering, automotive and instrument making. Due to their design, which includes a countersunk head, they fit securely into the base, which prevents possible protrusions and snags.
The DIN 7991 model is made of grade 8.8 steel, which provides high strength and reliability in operation.
DIN 7991 bolts are ideal for applications in confined spaces, where not only technical characteristics are important, but also the aesthetic appearance of the structures. They meet the highest requirements for safety and ergonomics, which makes them indispensable in modern production.
Technical specifications
Technical characteristics of the DIN 7991 8.8 zinc countersunk head hexagon socket bolt
| Fastening group | High-strength fastening |
| Material | Stal |
| Strength class | 8.8 |
| Coating | Zinc |
| Diameter, mm | 3 - 24 |
| Length, mm | 5 - 200 |
| Head | Hidden |
| Type of carving | Full , Partially |
| Slot | Hexagonal (INBUS) |
| Thread type | Metric |
Questions and answers
Is it profitable to buy
Buying DIN 7991 countersunk head bolts with internal hexagon is a smart choice for those who value efficiency and aesthetics in assembly. These bolts provide a perfect fit without protrusions, which makes them ideal for use in situations where both appearance and technological accuracy of connections are important. Reliability, quality and a favorable price are what you get when choosing DIN 7991 bolts in our store.
Where it is used
The DIN 7991 A4 countersunk head bolt with internal hexagon is ideal for applications where it is important to maintain the aesthetic appearance of the surface. It is often used in structures where protruding parts must be avoided, such as furniture, electronics, and in the mechanical and construction industries. Due to its design, this bolt sinks into the material, providing a smooth surface without the risk of damage or snags.
Particularly useful in areas with limited access, it allows for convenient fastening of parts such as panels or housings. The DIN 7991 A4 bolt is designed to work under high loads, as well as in conditions where dynamic influences are possible. Made of A4 steel, it provides excellent corrosion resistance, making it an ideal choice for outdoor or wet conditions.
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