Nonferrous Metals DIN 7990-1989 Big hexagon head bolts with hexagon nut for steel structures

Big hexagon head bolts with hexagon nut for steel structures are available in two thread specifications: M12 and M22, with pitches of 1.75mm and 2.5mm respectively. The material is nonferrous metals. Common surface treatments include blackening, galvanizing, and hot-dip galvanizing. Blackening treatment can improve the corrosion resistance of bolts, while galvanizing and hot-dip galvanizing treatments further enhance their anti-corrosive properties and extend their service life.
 
Product Characteristics

• Unique design: The large hexagonal head design allows the bolt to distribute the stress more effectively when tightened, thus improving the stability of the connection.
• High strength: Usually made of carbon steel or alloy steel, it has high strength and hardness after heat treatment, and can withstand large tensile and shear forces.
• Corrosion resistance: The surface can be blackened, dacromet, hot dip galvanized and other treatment to improve the corrosion resistance of bolts, suitable for a variety of harsh environments.
• High accuracy: Strict tolerances are followed during the manufacturing process to ensure that the bolts are precisely dimensioned and fit closely with the nuts, reducing the risk of loosening and failure.
• Easy to install: The hexagonal head design is easy to use tools such as wrenches to tighten and disassemble, improving work efficiency.

 
Application

• Steel structure engineering: It is suitable for the connection and fixing of various steel structure projects, such as Bridges, buildings, towers, mechanical equipment, etc. Large hexagon head bolts are better suited to the greater fastening forces and more stable connections required in these structures.
• Heavy-duty applications: Due to its high strength characteristics, it is especially suitable for connections in heavy load environments, such as the connection parts of heavy machinery equipment, lifting equipment, ships, etc.
• Outdoor environment: Corrosion-resistant bolts are suitable for outdoor environments and can resist the erosion of wind and rain, moisture and corrosive substances to maintain the stability of the connection.