DIN 7991 10,9 zinc plated black countersunk head Bolt under torx

Overview

DIN 7991 10.9 black zinc flake countersunk head bolt with Torx drive is a high-quality fastening element that combines reliability with an aesthetic appearance. Its countersunk head provides maximum concealment, allowing a smooth surface without protruding parts. Made of high-strength steel with strength class 10.9, this bolt offers excellent resistance to loads and mechanical impact. The zinc coating provides additional corrosion protection, while the black color makes it ideal for use in visually demanding structures.

The internal Torx drive allows power tools to be used easily for fast and efficient installation, ensuring secure tightening without the risk of damaging the head. Various diameters are available, making this bolt a versatile solution for different applications. It is used together with nuts and washers to create reliable connections that meet modern requirements for quality and design.

Coating: black zinc flake.

Main characteristics of this coating:

• Organic black top coating;
• Excellent anti-corrosion protection;
• High coverage ability on silver and black base coatings;
• Attractive uniform black appearance;
• Very good chemical resistance; increased UV resistance;
• Excellent adhesion, meaning the coating does not peel, crack, or flake even under mechanical loads or chemical exposure;
• Integrated lubricating component for controlled friction characteristics;
• No hydrogen embrittlement;
• Excellent corrosion resistance in NSST and cyclic corrosion tests.

Application Areas

DIN 7991 10.9 countersunk head bolt with Torx drive is an ideal solution for many industrial applications. Its design provides an aesthetic appearance of the connection, as the head is recessed into the material and eliminates protruding elements. This type of bolt is widely used in automotive manufacturing, where reliable connections capable of withstanding significant loads are required, as well as in furniture production, where appearance is important.

Strength class 10.9 bolts are made of high-strength steel, which guarantees durability under static and dynamic loads. The zinc coating provides additional corrosion protection, making them ideal for use in aggressive environments. Various diameters are available, allowing the optimal option to be selected for specific needs.

Thanks to the countersunk head, these Torx bolts are convenient to install with power tools, significantly improving work efficiency. They are also ideal for applications where safety and connection reliability are important. DIN 7991 10.9 bolts are an excellent choice for those who value quality and durability in their projects.

Technical Specifications

Is It Worth Buying?

Purchasing a DIN 7991 10.9 black zinc-coated countersunk head bolt with Torx drive is a smart choice for those who value quality and reliability. The specially designed internal Torx drive provides maximum contact with the tool, helping prevent stripping and ensuring high tightening efficiency. This is especially important when using electric or pneumatic tools, which can speed up the installation process by up to 70%, saving significant time.

The cone-shaped countersunk head is ideal for creating a smooth surface, which is important for furniture and design solutions where appearance matters. Strength class 10.9 bolts can withstand significant loads, making them ideal for critical structures.

A wide size range allows these bolts to be used in various areas, from industrial production to household applications. Thanks to the zinc coating, these bolts are corrosion-resistant, increasing their service life in high-humidity and aggressive environments. This not only improves reliability but also reduces maintenance costs.

Where It Is Used

DIN 7991 is a modern countersunk head bolt known for its high strength class 10.9 and black zinc-coated finish. This bolt is ideal for applications where appearance and functionality are highly important. Thanks to its design, it allows flush installation, ensuring a flat surface and preventing protrusions, which is especially important in furniture production and technical device manufacturing.

It is also widely used in mechanical engineering, where reliable connections are required for highly loaded components, as well as in construction for installation in countersunk holes, increasing structural strength. DIN 7991 bolt can be tightened with a Torx key, providing convenience and installation efficiency, especially when using pneumatic tools.

Galvanized steel provides corrosion protection under standard conditions, while A2/A4 stainless steel versions are ideal for aggressive environments, making it a versatile solution for various industrial applications.