Galvanized Hex Flange Bolt
The composition of flange bolts includes a hexagon head, a flange (a round washer placed under the hexagon head), and a screw with an external thread. To secure two parts with through holes, a matching nut is required. Flange bolts are commonly treated with zinc plating to enhance their surface. This unique design provides added safety when fastening soft and non-wear-resistant materials, preventing them from being punctured. Furthermore, flange bolts exhibit corrosion resistance and high durability. With the additional protection from the zinc coating, their service life is considerably extended. In summary, flange bolts are essential fasteners that offer enhanced safety and longer-lasting performance, especially when dealing with delicate materials.
Welcome to Jiangsu Jinrui Metal Products Co., Ltd., a renowned manufacturer and supplier of flange bolts in China. Our company stands out in the market due to our exceptional quality and reliable products. We take pride in our flange bolts, which have not only passed the rigorous ISO 9001 certification but also the IATF 16949 certification, ensuring their superior performance and durability.
We invite you to explore our factory and see for yourself the precision and expertise that goes into manufacturing our flange bolts. Our team of skilled professionals works diligently to produce bolts that meet international quality standards. With our advanced production techniques and strict quality control measures, we guarantee that our flange bolts will exceed your expectations.
Whether you are in need of flange bolts for industrial applications or any other purpose, we have a wide range of options to suit your specific requirements. You can rely on the strength and reliability of our bolts to ensure the safety and longevity of your projects.
At Jiangsu Jinrui, we prioritize customer satisfaction and provide excellent service throughout the buying process. Our knowledgeable staff is always ready to assist you and answer any queries you may have. We strive to build long-term relationships with our clients, offering competitive prices without compromising on quality.
If you are searching for high-quality flange bolts, look no further than Jiangsu Jinrui Metal Products Co., Ltd. Visit our factory, explore our extensive range, and experience the excellence that sets us apart. Trust us to deliver the reliable and durable flange bolts you need for your projects.
Production Process of Hex Flange Bolts
Specification of Hex Flange Bolts
d | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M20 | ||
P | Thread Pitch | Coarse Thread | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 |
Fine Thread 1 | / | / | 1 | 1.25 | 1.5 | 1.5 | 1.5 | 1.5 | ||
Fine Thread 2 | / | / | / | 1 | 1.25 | / | / | / | ||
b | L≤125 | 16 | 18 | 22 | 26 | 30 | 34 | 38 | 46 | |
125＜L≤200 | / | / | 28 | 32 | 36 | 40 | 44 | 52 | ||
L＞200 | / | / | / | / | / | / | 57 | 65 | ||
c | MIN | 1 | 1.1 | 1.2 | 1.5 | 1.8 | 2.1 | 2.4 | 3 | |
da | Max | 5.7 | 6.8 | 9.2 | 11.2 | 13.7 | 15.7 | 17.7 | 22.4 | |
dc | MAX | 11.8 | 14.2 | 18 | 22.3 | 26.6 | 30.5 | 35 | 43 | |
ds | MAX | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | |
MIN | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | 19.67 | ||
du | MAX | 5.5 | 6.6 | 9 | 11 | 13.5 | 15.5 | 17.5 | 22 | |
dw | MIN | 9.8 | 12.2 | 15.8 | 19.6 | 23.8 | 27.6 | 31.9 | 39.9 | |
e | MIN | 8.71 | 10.95 | 14.26 | 16.5 | 17.62 | 19.86 | 23.15 | 29.87 | |
f | MAX | 1.4 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | |
k | MAX | 5.4 | 6.6 | 8.1 | 9.2 | 11.5 | 12.8 | 14.4 | 17.1 | |
k1 | MIN | 2 | 2.5 | 3.2 | 3.6 | 4.6 | 5.1 | 5.8 | 6.8 | |
r1 | MIN | 0.25 | 0.4 | 0.4 | 0.4 | 0.6 | 0.6 | 0.6 | 0.8 | |
r2 | MAX | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.9 | 1 | 1.2 | |
r3 | MIN | 0.1 | 0.1 | 0.15 | 0.2 | 0.25 | 0.3 | 0.35 | 0.4 | |
r4 | ≈ | 3 | 3.4 | 4.3 | 4.3 | 6.4 | 6.4 | 6.4 | 8.5 | |
s | MAX=Nominal Size | 8 | 10 | 13 | 15 | 16 | 18 | 21 | 27 | |
MIN | 7.78 | 9.78 | 12.73 | 14.73 | 15.73 | 17.73 | 20.67 | 26.67 | ||
Common Grade and Coating
Standard | Material | Grade | Finish | Thread |
DIN933 | carbon steel | 4.6 | Plain | UNC |
Zinc plated | ||||
Alloy steel | Yellow zinc plated | |||
PTFE | ||||
Stainless steel | Black Oxide | UNF | ||
Dacromet | ||||
Other | HDG | |||
Other |
Application Area of Hex Flange Bolts
The application range of flange bolts is very wide, coupled with zinc finish, flange bolts occupy a large market in infrastructure fields such as petrochemical industry, automobile manufacturing, construction, household appliances, mechanical equipment, metallurgy and light industry. . Of course, in some specific locations in these areas, other products are also used together, such as rail bolts, oval neck fish bolts, carriage bolts, U-bolts, hexagon head cap bolts, T-bolts and round head hex socket bolts etc..
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