Product Details
DIN933 ISO4017 EN24017 Hexagon Head Bolts Full Thread Yellow Zinc Carbon Steel/Alloy Steel Class6.8 8.8 10.9
Name and purpose:
The head of the hexagonal external thread fastener is called the hexagonal head bolt, which is one of the most common types of fasteners, where fasteners are basically its figure, and it is very widely used.
Material:
Carbon steel, alloy steel, stainless steel, non-ferrous metal, nylon plastic and ect..
Class:
Bolt performance grade 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9 14.9 and other more than 10 grades, the meaning of bolt performance grade is an international standard, the same performance grade of bolts, regardless of the difference in material and origin, its performance is the same, the design can only choose the performance grade.
Features:
- Hexagonal Head Design: DIN 933 bolts feature a hexagonal head that perfectly matches with hexagonal nuts, ensuring secure and stable connections.
- High Strength: Manufactured from high-quality materials such as carbon steel or alloy steel, DIN 933 bolts possess high strength and toughness, capable of bearing loads and resisting the effects of the working environment.
- Corrosion Resistance: The bolts' surfaces undergo anti-corrosion treatments, such as zinc plating or anti-corrosion coatings, to enhance their corrosion resistance, making them suitable for harsh metallurgical environments.
- Standardization: DIN 933 is an international standard that specifies the material, dimensions, mechanical properties, and other important parameters of bolts, ensuring sufficient strength and reliability.
- Wide Applicability: DIN 933 bolts are suitable for various applications requiring high-strength fastening, such as the connection of key components in metallurgical equipment like coolers, heaters, and reactors.
Advantages:
- Safety and Reliability: DIN 933 bolts undergo strict quality control and testing to ensure sufficient strength and reliability during use, minimizing the risk of breakage or loosening, improving the safety and stability of equipment.
- Ease of Installation: The hexagonal head design allows DIN 933 bolts to conveniently mate with nuts, improving installation efficiency. Additionally, standardized dimensions and tolerances ensure good compatibility with nuts and threaded holes, guaranteeing accurate and secure installation.
- Corrosion Resistance: The bolts' corrosion-resistant surfaces resist the erosion of various corrosive media, extending their service life.
- Wide Applicability: DIN 933 bolts are suitable for a wide range of mechanical equipment and structural connections, offering excellent versatility and interchangeability, reducing inventory and maintenance costs.

Nominal Diameter | M2 | M2.5 | M3 | (M3.5) | M4 | M5 | M6 | (M7) | M8 | M10 | M12 | (M14) | M16 |
P | Pitch | 0.4 | 0.45 | 0.5 | 0.6 | 0.7 | 0.8 | 1 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 |
k | Nominal Size | 1.4 | 1.7 | 2 | 2.4 | 2.8 | 3.5 | 4 | 4.8 | 5.3 | 6.4 | 7.5 | 8.8 | 10 |
| Grade A min | 1.28 | 1.58 | 1.88 | 2.28 | 2.68 | 3.35 | 3.85 | 4.65 | 5.15 | 6.22 | 7.32 | 8.62 | 9.82 |
| Grade A max | 1.52 | 1.82 | 2.12 | 2.52 | 2.92 | 3.65 | 4.15 | 4.95 | 5.45 | 6.56 | 7.68 | 8.98 | 10.18 |
| Grade B min | / | / | / | / | 2.6 | 3.26 | 3.76 | 4.56 | 5.06 | 6.11 | 7.21 | 8.51 | 9.71 |
| Grade B max | / | / | / | / | 3 | 3.74 | 4.24 | 5.04 | 5.54 | 6.69 | 7.79 | 9.09 | 10.29 |
s | max=nominal size | 4 | 5 | 5.5 | 6 | 7 | 8 | 10 | 11 | 13 | 17 | 19 | 22 | 24 |
| Grade A min | 3.82 | 4.82 | 5.32 | 5.82 | 6.78 | 7.78 | 9.78 | 10.73 | 12.73 | 16.73 | 18.67 | 21.67 | 23.67 |
| Grade B min | / | / | / | / | 6.64 | 7.64 | 9.64 | 10.57 | 12.57 | 16.57 | 18.48 | 21.16 | 23.16 |
e | Grade A min | 4.32 | 5.45 | 6.01 | 6.58 | 7.66 | 8.79 | 11.05 | 12.12 | 14.38 | 18.9 | 21.1 | 24.49 | 26.75 |
| Grade B min | / | / | / | / | 7.5 | 8.63 | 10.89 | 11.94 | 14.2 | 18.72 | 20.88 | 23.91 | 26.17 |
Nominal Diameter | (M18) | M20 | (M22) | M24 | (M27) | M30 | (M33) | M36 | (M39) | M42 | (M45) | M48 | (M52) |
P | Pitch | 2.5 | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 | 4 | 4.5 | 4.5 | 5 | 5 |
k | Nominal Size | 11.5 | 12.5 | 14 | 15 | 17 | 18.7 | 21 | 22.5 | 25 | 26 | 28 | 30 | 33 |
| Grade A min | 11.28 | 12.28 | 13.78 | 14.78 | / | / | / | / | / | / | / | / | / |
| Grade A max | 11.72 | 12.72 | 14.22 | 15.22 | / | / | / | / | / | / | / | / | / |
| Grade B min | 11.15 | 12.15 | 13.65 | 14.65 | 16.65 | 18.28 | 20.58 | 22.08 | 24.58 | 25.58 | 27.58 | 29.58 | 32.5 |
| Grade B max | 11.85 | 12.85 | 14.35 | 15.35 | 17.35 | 19.12 | 21.42 | 22.92 | 25.42 | 26.42 | 28.42 | 30.42 | 33.5 |
s | max=nominal size | 27 | 30 | 32 | 36 | 41 | 46 | 50 | 55 | 60 | 65 | 70 | 75 | 80 |
| Grade A min | 26.67 | 29.67 | 31.61 | 35.38 | / | / | / | / | / | / | / | / | / |
| Grade B min | 26.15 | 29.16 | 31 | 35 | 40 | 45 | 49 | 53.8 | 58.8 | 63.1 | 68.1 | 73.1 | 78.1 |
e | Grade A min | 30.14 | 33.53 | 35.72 | 39.98 | / | / | / | / | / | / | / | / | / |
| Grade B min | 29.56 | 32.95 | 35.03 | 39.55 | 45.2 | 50.85 | 55.37 | 60.79 | 66.44 | 71.3 | 76.95 | 82.6 | 88.25 |
Company Profile
Jiangsu Ying Yan Fastening System Technology Co. Ltd was founded in
2002. It is located in Wujiang Fenhu High-tech Industrial
Development Zone, Suzhou City. It has a superior geographical
location and convenient transportation. It is a professional
fastener manufacturer integrating R&D, production and sales
manufacturer. The company has established a complete quality
management system, invested heavily in the establishment of R&D
technology centers, introduced high-tech talents, and used the ERP
system for efficient and orderly management. The company has been
adhering to the principle of mutual benefit and win-win cooperation
with customers from different industries for many years. The value
and significance of an enterprise do not lie in the so-called
success for a while, but in the ability to create more social value
and assume social responsibility while continuously creating
economic value.
In the 24 years of development, Jiangsu Ying Yan Fastening System
Technology Co. Ltd has always adhered to the development concept of
"creating excellent quality with the heart of a craftsman", and
also adhered to the operating principle of "innovation, quality,
service, gratitude" to absorb New ideas, strict quality control,
all-round service for the purpose. With the continuous development
and growth of the company, we will continue to pursue the above
concepts, principles and purposes, use the wisdom created by
ingenuity to create fastener products, provide competitive
industrial product solution services, and continue to create the
greatest value for customers. Value, become the ultimate choice for
end customers.
Persevere in building Yingyan fastening system technology into a
benchmark enterprise in the domestic and foreign fastener industry,
and write the industry legend of domestic fastener products!