High-Strength M45 Hex Nut for Critical Applications

Description

This is a high-tensile hexagonal nut with an M45 thread, engineered according to the DIN 2510 Form NF standard. Manufactured from 40CrMoV4-6 chromium-molybdenum-vanadium alloy steel, this nut provides exceptional performance in high-temperature and high-pressure environments, ensuring reliable and secure fastening for critical connections.

Specifications

• Type: Hexagonal Nut
• Standard: DIN 2510 Form NF
• Thread Size: M45
• Material: 40CrMoV4-6 (Material No. 1.7742)
• Finish: Protective coating, likely yellow zinc-chromate plated

Label Info

• Internal Part No: 100882
• Markings on Nut: 40Cr, 7L, J8

Application

Specifically designed for use with studs in flanged connections, pressure vessels, turbines, and other heavy machinery where resistance to high temperatures and mechanical stress is paramount.

Country of Origin

Not specified on the product. Typically manufactured in industrial regions like Germany, the USA, or Japan.

CO2 Impact

Opting for this pre-owned component avoids the production of a new one, saving an estimated 1.0 kg of CO2. This is a responsible choice for both your budget and the environment.

Availability

This item is in stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

Question?

What is the significance of the DIN 2510 NF standard for this nut?

Answer:
The DIN 2510 standard is specifically for bolted connections in high-stress applications, particularly for pressure vessels and flanged joints. A nut conforming to this standard has specific dimensions and material properties to safely handle high tensile loads and temperatures, ensuring a secure, leak-proof connection.

What are the key properties of the 40CrMoV4-6 steel?

Answer:
40CrMoV4-6 (1.7742) is a heat-resistant CrMoV alloy steel known for its high strength, toughness, and excellent creep resistance at elevated temperatures (up to approx. 540 deg C). This makes it ideal for fasteners used in power generation, chemical plants, and refineries.

Can I use a standard M45 nut of property class 8.8 or 10.9 as a replacement?

Answer:
No, it is not recommended. While the thread size is the same, a standard nut does not meet the specific material requirements for high-temperature service defined by DIN 2510. Using an incorrect nut could lead to premature failure, especially under thermal cycling and high pressure, posing a significant safety risk.

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Last Update: Friday, March 13, 2026