DIN 931 10,9 zinc-nickel black hex head bolt with partial thread

Overview

The DIN 931 bolt is manufactured with a hex head and partial thread, making it suitable for use in a variety of structures. This bolt has a strength class of 10.9, indicating high resistance to mechanical loads, which allows it to be used under heavy-duty conditions. The partial thread covers only part of the shank, leaving a smooth surface that is ideal for creating support axes or reducing friction in joints. The zinc coating provides additional protection against corrosion, making these bolts particularly suitable for outdoor or damp conditions. DIN 931 bolts with a strength class of 10.9 are a reliable choice for critical structures where not only strength but also durability is essential.

Coating: Zinc-nickel plating is an innovative anti-corrosion solution for fasteners that combines high protective performance, mechanical strength, and environmental safety.

The key advantages of zinc-nickel plating are:

• Excellent corrosion resistance - more than three times higher than that of conventional zinc;
• Low risk of hydrogen embrittlement;
• Compatibility with aluminum - does not form galvanic couples and does not cause corrosion when combined with aluminum parts;
• Enhanced heat resistance - retains its protective properties under temperature fluctuations and during prolonged operation in high-temperature conditions;
• Mechanical strength - harder than pure zinc, with better resistance to scratches and wear;
• Environmental friendliness - less formation of oxidation products, resulting in lower zinc emissions into the environment throughout the product’s entire life cycle.
• Aesthetics and discreet appearance - the coating has a deep black color, making it virtually invisible.

Technical Specifications

Technical specifications for DIN 931 hex head bolts with partial threads, strength class 10.9, with a zinc-nickel plating:

• Nominal diameters: M10.
• Thread pitch: metric standards, including M8-1.25; M10-1.5; M12-1.75; M16-2.0; M20-2.5, and others.
• Thread length: for bolts with a length L ≤ 150 mm - approximately 20–35 mm; for L between 150–300 mm - correspondingly longer, in accordance with standard requirements.
• Strength class: 10.9, ensuring high reliability and resistance to loads under various operating conditions.
• Coating: black zinc-nickel

Equivalents

The DIN 931 10.9 black zinc-nickel hex head partial-thread bolt is one of the most common fasteners used across various industries. This bolt is made of high-quality steel, providing a strength class of 10.9, which makes it an ideal choice for applications requiring high load-bearing capacity.

Key features of DIN 931 10.9:

• The hex head ensures ease of use and simple installation using standard tools.
• The partial thread allows for an optimal connection with materials that require a strong clamping force.
• The zinc-nickel coating provides additional protection against corrosion, which is important for use in high-humidity conditions or in corrosive environments.

Equivalents to DIN 931:

• GOST 7798-70 - an equivalent to DIN 931, which also features a hex head and partial metric thread.
• GOST 7805-70 - complies with the DIN 931 / ISO 4014 standard, offering similar characteristics.
• ISO 4014 - an international standard that fully complies with DIN 931 in terms of shape, thread, diameters, and lengths.

Applications

The DIN 931 10.9 bolt with a hex head and partial thread is a reliable solution for a range of industrial applications, thanks to its high mechanical properties.

Applications:

In construction - ideal for assembling structures where joint stability is critical, particularly in metal frames, supports, and truss systems. Available in diameters M12–M30 and lengths of 50–250 mm.

In mechanical engineering - used to join components such as brackets, frames, and housings that are subjected to significant loads and vibrations.

In harsh operating conditions - thanks to their high strength rating of 10.9 - these bolts are ideal for use in corrosive environments where reliability and corrosion resistance are required, combined with a zinc-nickel coating for additional protection.

This bolt will be a reliable component in your fastening system, ensuring long-term service life and safety.

Questions and Answers

Is it worth buying?

The DIN 931 hex head partial-thread bolt is a reliable fastener featuring a high strength class of 10.9. Its zinc-plated steel construction provides additional corrosion protection, making it an ideal choice for outdoor applications. Thanks to its partial thread, it provides a stable connection in structures that require high reliability. When you purchase DIN 931 bolts, you get a high-quality, durable product that meets modern standards.

Applications
The DIN 931 hex head bolt with partial thread is manufactured from high-quality steel with a strength class of 10.9, making it an ideal choice for use under high loads. This type of bolt is often used in construction projects where reliable fasteners are required, as well as in mechanical engineering to secure components subjected to significant mechanical stress. Thanks to its zinc-nickel coating, the DIN 931 offers enhanced corrosion resistance, making it suitable for outdoor applications and in humid environments.