Hex Flange Bolts

A flange bolt is a standard component that comprises a hexagon head and a flange that attaches to a gasket underneath the hexagon. It also includes a screw with external threads. These bolts are typically used to fasten two parts connected by through holes and need the cooperation of nuts. The unique design of the flange eliminates the need for washers and allows for even distribution of pressure across a greater surface area. It also eliminates the need for additional spare parts, making it an efficient and cost-effective option for various applications.

As a reputable manufacturer and supplier of hex flange bolts for over 23 years, Jinrui is dedicated to providing top-quality flange bolts in various standard options, including metric and imperial flange bolts. We also offer personalized services based on your specific needs. Our company has been certified with both ISO9001:2015 and IATF16949:2016 automotive quality management system certifications, giving you peace of mind when purchasing from us.
In addition, to further ensure your trust in our products, we have taken out Global Product Liability Insurance policy with the People's Insurance Company of China. Our extensive range of products includes bolts, nuts, studs, screws, washers, and many other non-standard items, with an annual output of more than 30,000 tons, catering to meet our customer's unique needs. Choose Jinrui for high-quality hex flange bolts, and experience exceptional service and satisfaction.

Flange bolts (flat head)

The flat-brain flange bolt is a type of bolt that comprises of a hexagonal head, flange, and screw. Similar to the concave-brain flange bolt, the only noticeable difference is in the head design. Depending on the usage scenario, the screw can come with a full or half-threaded feature. Additionally, the flange comes in two different types, which are the flat bottom and the toothed flange. The toothed flange possesses an anti-skid effect that promotes better stability during use.

Flange bolts (concave brain)

The composition of the concave-brain flange bolt includes a screw, a hexagonal head, and a flange. Its counterpart, the flat-brain flange bolt, shares the same structure except for the head. The screw can either be fully threaded or half-threaded depending on the intended use. Additionally, the flange can have a flat bottom or be toothed, serving the purpose of preventing skidding. By modifying the arrangement of the original information, I will now generate a highly similar content that adheres to the given instructions.

Cross recessed flange bolts

The cross-recessed flange bolts operate similarly to standard flange bolts, but with the added benefit of a cross-recessed head for alternate loading and unloading methods. This feature can enhance the overall efficiency of usage, especially in certain scenarios where other methods may not be as effective.

What are the characteristics of flange bolts?

The flange bolt stands out among other bolt connection methods due to its unique structure. When compared with other connection methods, it offers several advantages. First, it allows for convenient disassembly and easy maintenance, making it a preferred choice in various industries. Additionally, it enables the increase of pre-tightening force, effectively preventing loosening and ensuring a secure connection. Furthermore, flange bolts do not cause any phase change in the composition of the connection material, making them ideal for certain applications.
Carbon steel flange bolts, produced from carbon steel raw materials, possess remarkable strength capabilities. They can withstand high levels of stretching, compression, reversing, and shear forces. On the other hand, stainless steel flange bolts, which are made from stainless steel, exhibit exceptional corrosion resistance. This corrosion-resistant property makes them an excellent choice for environments where corrosion is a concern.
To summarize, the distinctive features of the flange bolt, such as its convenient disassembly, maintenance benefits, ability to increase pre-tightening force, and absence of phase change in the connection material, make it a preferred option. Moreover, carbon steel flange bolts offer high strength capabilities, while stainless steel flange bolts excel in corrosion resistance. These qualities make flange bolts suitable for a wide range of applications in various industries.

As an excellent Chinese flange bolt factory, Jinrui produced the flange bolts all use raw materials of well-known steel mills. In this regard, we can provide corresponding material reports. We can produce a wide range of flanges. , 10mm-3000mm Jinrui can be customized. For example, our common M6 flange bolts, M8 flange bolts, M10 flange bolts, 12mm flange snails, 13mm flange bolts, 14mm flange bolts, etc.

In addition, Jinrui has a reliable and stable surface treatment process, which can provide you with galvanized flange bolts and chrome flange bolts. High -quality surface treatment can provide good corrosion resistance, and at the same time, the toughness of the coating product will also be strengthened to make it more durable.

Flange bolts are composed of hexagonal head and flange plate, and the ratio of the supporting area to the stress area is larger than that of ordinary bolts, so this kind of bolts can bear higher pre-tightening force and have better anti-loosening performance, so they are widely used in Automotive engines, heavy machinery and other products. As a professional flange bolts manufacturer, if you have any questions about the application field, you are welcome to consult at any time.

Jiangsu Jinrui Metal Products Co., Ltd. was established in 2018 and is located in Haian High-tech Zone, Jiangsu Province, China. The factory covers an area of 30,000 square meters, with a total investment of over 100 million yuan, an annual output of 20,000 tons, and business contacts in more than 40 countries around the world. and region. Jinrui is currently equipped with advanced multifunctional cold heading equipment, threading machine, nut machine and large hot heading equipment, through our research and development department can manufacture various high-quality fasteners that meet GB, DIN, ANSI, JIS and ISO standards and non-standard products. Moreover, Jinrui has passed the ISO9001:2015 quality system certification and IATF16949:2016 automobile quality management system certification. We have also insured the "Global Product Liability Insurance" in the People's Insurance Company of China to relieve all concerns for customers. As a professional flange bolt manufacturing supplier, Jinrui has been looking forward to cooperating with you.

Q1: Are you a factory or trading company?

A: We are manufacturer of hex bolts and nut for more than 20 years . We have two factories, one in Shanghai and the other in Jiangsu. Our production capacity can be 20000 + tons per year. We can customize our products according to customers' requirements, drawings and samples.

Q2: How many years you do foreign trade?

A: We have more than 20 years experience in exporting products to worldwide countries with our best quality. Now we have exported more than 40 countries, such as Spain, Germany, Italy, Belgium, United Kingdom, Lithuania, USA, Canada, Australia, Singapore,Japan, Thailand, Malaysia, South Korea,Indonesia, Egypt, Philippines and so on.

Q3: Do you have enough outputs?

A: We have enough stock in warehouses with abundant capital. We offer 24-hour services. For most common standards, we have them on stock, such as hex bolts, hex nuts, etc. 

Q4: How to ensure that every process's quality?

A: First, we have technical drawings for each product when producing.

Second, our workers most have more than 10-years experience of doing hex bolts.

Third, our QC people will do inspection every 2 hours. If finding the bad parts, they will stop the porduction immediately.

Then,the finished parts will be checked again before shipment which insures every product's quality.

Q5: How to ensure the safety of long-distance transportation?

A: We pack into cartons first, and then pack cartons on pallets. The pallet is very easy to lift by Forklift wihch will protect the cartons from damage. Professional packing teams which keep every packing safely.

Q6: What products can you customize?

A:One is standard parts, such as DIN933, hex bolts. The other is Non-standard parts. If you want standard parts, you can tell the standard, size, grade(material) ,coating and quantity. For example, you want to buy DIN933, M12X60,grade 8.8, zinc plated and 20000pcs.

If you want non-standard parts, you can show us samples, drawings or detail descriptions. Then our engineer will do the technical drawings for you.

Q7: Can you provide some sample?

A: Samples can be provided as your requirements.

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