DIN EN 14399-4 BOLTS
1. What is DIN EN 14399-4?
DIN EN 14399-4, also known as EN 14399-4, is a European standard for high-strength structural bolts in the HV system. These bolts are designed for applications requiring high load capacity and durability. At Quang Thai, we manufacture DIN EN 14399-4 bolts with diameters ranging from M12 to M56, ensuring compliance with the international ISO standard for strength class 10.9.
2. Features of DIN EN 14399-4 Bolts
What is DIN EN 14399-3?
DIN EN 14399-3, also known as BS EN 14399-3, is a European standard for heavy-duty structural bolts in the HR system. These bolts are specifically designed for high-load connections requiring exceptional strength and durability.
Quang Thai manufactures EN 14399-3 bolts with diameters ranging from M12 to M56, meeting strength grades of 8.8 and 10.9 according to international standards.
Features of DIN EN 14399-3 Bolts
Standard Dimensions
EN 14399-3 bolts are produced according to the EN 14399 (-3 Bolt) - 2015 Part 3 standard, which specifies high-strength hexagonal structural bolts in the HR system.
Surface Treatments
At Quang Thai, DIN EN 14399-3 bolts can be treated with various surface finishes, including:
• Hot-dip galvanization
• Electro-galvanization (white-blue, gray, yellow 7-color coating)
• Dacromet or Geomet coating
• Black oxide coating
However, for 10.9-grade high-strength bolts, hot-dip or electro-galvanization is not recommended due to hydrogen embrittlement, which can compromise the bolt’s ductility and lead to cracking or failure.
Product Parameters
| System |
HR System |
HV System |
| Bolts and Nuts |
EN 14399-3 |
EN 14399-4 |
| Washers |
EN 14399-5 or EN 14399-6 |
EN 14399-6 |
| Component |
Bolt |
HR 8.8 |
| Nut |
HR8 or HR10 |
| Washer |
H or HR |
| General Requirements |
EN 14399-1 |
| Material |
Carbon steel, alloy steel
|
| Chemical Composition |
|
| Mechanical Properties |
|
3. Applications of DIN EN 14399-3 Bolts
Thanks to their high strength and load-bearing capacity, EN 14399-3 bolts are widely used in various structural and industrial projects, including:
• Steel structures: Industrial zones, factories
• Energy sector: Wind turbines, hydroelectric plants
• Oil & gas, ports, and marine structures
• Civil construction: Bridges, highways, high-rise buildings
• Heavy machinery installation and assembly
4. Pricing of DIN EN 14399-3 Bolts
The price of EN 14399-3 bolts depends on several factors:
• Type: The standard covers different types of fasteners, such as structural bolts and nuts, each with its own pricing.
• Material: Different raw materials influence the cost.
• Strength grade: Higher strength grades come at a higher price (e.g., 10.9-grade bolts cost more than 8.8-grade bolts).
• Size: Larger diameters and longer bolts generally cost more (e.g., M42 bolts cost more than M39, and M20x120 costs more than M20x100).
• Surface treatment: Coatings affect pricing for example, hot-dip galvanization is more expensive than electro-galvanization.
5. Why Choose DIN EN 14399-3 Bolts from Quang Thai?
At Quang Thai, we take pride in being a leading manufacturer of DIN EN 14399-3 standard bolts in Vietnam. Our factory produces high-quality structural bolts and fasteners at competitive prices while prioritizing product reliability and performance.
For the best-quality bolts, contact us at +84 933 220 468. Quang Thai is always ready to serve you!
