Product Details
DIN961 EN ISO8676 Carbon Steel/Alloy Steel Hexagon Head Bolts With
Fine Pitch Thread Grade4.8,6.8,8.8 Zinc Plated
Advantages:
- High Strength: Due to the fine pitch design, the bolt can disperse the force
over a smaller contact area, thus increasing the strength per unit
area.
- High Precision: The fine pitch thread allows for a tighter fit between the bolt
and nut, providing higher assembly precision.
- Excellent Sealing Performance: The close fit of the fine pitch thread reduces gaps, resulting in
superior sealing capabilities, especially suitable for sealing
applications.
- Easy Assembly: The hexagon head design makes the bolt easier to manipulate with
tools such as wrenches or screwdrivers during assembly and
disassembly.
Characteristics:
- Fine Pitch Design: As mentioned, the fine pitch thread is the primary characteristic
of this bolt, providing the aforementioned advantages.
- Hexagon Head: The hexagon head design ensures stability during operation and
easy rotation with tools.
- Good Interchangeability: Following unified international standards, these bolts have good
interchangeability, making it convenient for users to select and
replace them.
Applications:
- High-Precision Equipment: Due to the high precision and excellent sealing performance of
fine pitch bolts, they are often used in equipment requiring
precise connections, such as precision instruments and aerospace
equipment.
- Vibration Environments: Fine pitch bolts' high strength and superior locking performance
make them suitable for applications subject to vibration and
impact, such as automobiles, motorcycles, and ships.
- Sealing Applications: The tight fit of fine pitch bolts makes them particularly
suitable for sealing applications, such as pipelines and fuel
tanks.
In summary, Hexagon head bolts with fine pitch thread, with their
high strength, high precision, excellent sealing performance, and
ease of assembly, have found widespread applications in various
scenarios requiring precise connections and sealing.
Screw Thread | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 |
d |
P | Pitch | Fine thread-1 | 1 | 1 | 1.5 | 1.5 | 1.5 | 2 | 1.5 | 2 | 2 |
Fine thread-2 | - | 1.25 | 1.25 | - | - | 1.5 | 2 | 1.5 | 1.5 |
a | max | 3 | 3.75 | 4.5 | 4.5 | 4.5 | 6 | 6 | 6 | 6 |
c | min | 0.15 | 0.15 | 0.15 | 0.15 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
max | 0.6 | 0.6 | 0.6 | 0.6 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
da | max | 9.2 | 11.2 | 13.7 | 15.7 | 17.7 | 20.2 | 22.4 | 24.4 | 26.4 |
dw | Grade A | min | 11.6 | 15.6 | 17.4 | 20.5 | 22.5 | 25.3 | 28.2 | 30 | 33.6 |
Grade B | min | 11.4 | 15.4 | 17.2 | 20.1 | 22 | 24.8 | 27.7 | 29.5 | 33.2 |
e | Grade A | min | 14.38 | 18.9 | 21.1 | 24.49 | 26.75 | 30.14 | 33.53 | 35.72 | 39.98 |
Grade B | min | 14.2 | 18.72 | 20.88 | 23.91 | 26.17 | 29.56 | 32.95 | 35.03 | 39.55 |
k | Nominal Size | 5.3 | 6.4 | 7.5 | 8.8 | 10 | 11.5 | 12.5 | 14 | 15 |
Grade A | min | 5.15 | 6.22 | 7.32 | 8.62 | 9.82 | 11.28 | 12.28 | 13.78 | 14.78 |
max | 5.45 | 6.58 | 7.68 | 8.98 | 10.18 | 11.72 | 12.72 | 14.22 | 15.22 |
Grade B | min | 5.06 | 6.11 | 7.21 | 8.51 | 9.71 | 11.15 | 12.15 | 13.65 | 14.65 |
max | 5.54 | 6.69 | 7.79 | 9.09 | 10.29 | 11.85 | 12.85 | 14.35 | 15.35 |
k1 | min | 3.54 | 4.28 | 5.05 | 5.96 | 6.8 | 7.8 | 8.5 | 9.6 | 10.3 |
r | min | 0.4 | 0.4 | 0.6 | 0.6 | 0.6 | 0.6 | 0.8 | 0.8 | 0.8 |
s | max=nominal size | 13 | 17 | 19 | 22 | 24 | 27 | 30 | 32 | 36 |
Grade A | min | 12.73 | 16.73 | 18.67 | 21.67 | 23.67 | 26.67 | 29.67 | 31.61 | 35.38 |
Grade B | min | 12.57 | 16.57 | 18.48 | 21.16 | 23.16 | 26.16 | 29.16 | 31 | 35 |
Weight of per 1000 steel products(≈kg) | | | | - | - | - | - | - | - | - | - | - |
Screw Thread | M27 | M30 | M33 | M36 | M39 | M42 | M45 | M48 | M52 |
d | | | | | | | | | |
P | Pitch | Fine thread-1 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 |
Fine thread-2 | - | - | - | - | - | - | - | - | - |
a | max | 6 | 6 | 6 | 9 | 9 | 9 | 9 | 9 | 9 |
c | min | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
max | 0.8 | 0.8 | 0.8 | 0.8 | 1 | 1 | 1 | 1 | 1 |
da | max | 30.4 | 33.4 | 36.4 | 39.4 | 42.4 | 45.6 | 48.6 | 52.6 | 56.6 |
dw | Grade A | min | - | - | - | - | - | - | - | - | - |
Grade B | min | 38 | 42.7 | 46.6 | 51.1 | 55.9 | 59.9 | 64.7 | 69.4 | 74.2 |
e | Grade A | min | - | - | - | - | - | - | - | - | - |
Grade B | min | 45.2 | 50.85 | 55.37 | 60.79 | 66.44 | 71.3 | 76.95 | 82.6 | 88.25 |
k | Nominal Size | 17 | 18.7 | 21 | 22.5 | 25 | 26 | 28 | 30 | 33 |
Grade A | min | - | - | - | - | - | - | - | - | - |
max | - | - | - | - | - | - | - | - | - |
Grade B | min | 16.65 | 18.28 | 20.58 | 22.08 | 24.58 | 25.58 | 27.58 | 29.58 | 32.5 |
max | 17.35 | 19.12 | 21.42 | 22.92 | 25.42 | 26.42 | 28.42 | 30.42 | 33.5 |
k1 | min | 11.7 | 12.8 | 14.4 | 15.5 | 17.2 | 17.9 | 19.3 | 20.9 | 22.8 |
r | min | 1 | 1 | 1 | 1 | 1 | 1.2 | 1.2 | 1.6 | 1.6 |
s | max=nominal size | 41 | 46 | 50 | 55 | 60 | 65 | 70 | 75 | 80 |
Grade A | min | - | - | - | - | - | - | - | - | - |
Grade B | min | 40 | 45 | 49 | 53.8 | 58.8 | 63.1 | 68.1 | 73.1 | 78.1 |
Weight of per 1000 steel products(≈kg) | | | | - | - | - | - | - | - | - | - | - |
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!