Typical Materials Used in Flange Bolt Manufacturing - Wholesale High Strength Flange Bolts Factory Manufacturer

Flange bolts are fasteners comprising a hexagonal head and a flange plate, with a screw (a cylinder featuring an external thread) that requires matching with a nut. They are utilized to connect two parts through holes securely. In this discussion, our focus will primarily be on their classification and the common materials used. Let's delve into it!

Classification of flange bolts:

50. Hexagon flange variation: Hexagonal heads come in flat and concave styles.
50. Surface finish options: Tailored to various requirements, surfaces can be coated in white, military green, vibrant yellow, or Dacromet, renowned for its rust-resistant properties.
50. Flange classification: The disk size varies based on the application of flange bolts. There are flat-bottom and serrated disks, with serrated ones offering anti-slip functionality.
50. Flange bolts can be categorized into standard and articulated types based on the connection force. Bolts used for reaming holes must correspond to the hole size and are suitable for lateral force applications. Additionally, holes in the rod section aid in post-installation locking, preventing loosening during vibration. Some flange bolts feature unthreaded polished rods, making them thin and termed as thin rod flange bolts. These bolts are advantageous for connections under variable force. High-strength bolts, particularly used in steel structures, have larger heads, with size variations.

Common materials for flange bolts:

50. High-carbon steel with a carbon content greater than 0.45% is not currently utilized as a material for hexagon flange bolt production.
50. Medium carbon steel, typically with a 0.25% carbon content, is often referred to as No. 35 and No. 45 steel in China, while internationally known as 1035, CH38F, 1039, and 40ACR, among others. These materials are primarily employed in grade 8 nuts, grade 8.8 bolts, and grade 8.8 hexagon socket products.

50. Low-carbon steel, with a carbon content of ≤0.25%, is commonly known as A3 steel in China. In foreign countries, it is typically labeled as 1008, 1015, 1018, 1022, etc. This type of steel is primarily utilized in grade 4.8 bolts, grade 4 nuts, small screws, and other products that do not require high hardness. (Note: Drill tail screws are predominantly crafted from 1022 material.)
50. Alloy steel incorporates alloying elements into standard carbon steel to enhance specific properties. This may include 35, 40 chromium molybdenum, SCM435, and 10B38. Hexagon flange bolts predominantly employ SCM435 chromium molybdenum alloy steel, consisting primarily of carbon, silicon, manganese, phosphorus, sulfur, chromium, and molybdenum.

Application of flange bolts

Hexagon flange bolts are widely used as industrial equipment and appliances because they have the characteristics of accurate decoration and strong endurance. They are widely used on highways, railway bridges, and industrial and civil applications. Construction, cranes, excavators, and other heavy machinery. Various new types of hexagon flange bolts have also been derived with the change in market demand. For example, cross groove concave and convex hexagon head bolts supplement hexagon flange bolts, which fully meet your different needs.

Conclusion

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