Carbon Steel ASME/ANSI B18.6.3-29-2013 Large hex head screws

Technical Specifications

• Materials: High-strength carbon steel
• Thread Size: 4# inch-1/4inch
• Surface Treatment: Optional galvanized, black oxide, Dacromet (enhance corrosion resistance and service life)

Product Overview

Our Carbon Steel Large Hex Head Screws are engineered to withstand extreme loads and harsh environments, making them an indispensable heavy-duty fastener for heavy construction and manufacturing. Their distinctive feature is a larger and thicker head than conventional screws—this design of carbon steel hex head fasteners not only increases the contact area with tools, but also ensures more uniform pressure distribution, reduces the risk of damage, and delivers superior performance in high-strength applications.
Crafted from high-quality high-strength carbon steel, these heavy-duty carbon steel screws combine reinforced construction, fine processing and excellent weather resistance, providing reliable fastening solutions for scenarios requiring extreme durability and stability.

Functional Characteristics

• Reinforced Large Hex Head Construction: The large, thickened head design of our Carbon Steel Large Hex Head Screws provides additional torque and shear resistance, making them ideal for heavy-duty use in high-load industrial scenarios.
• High Pressure Capacity: These carbon steel hex head fasteners can effectively disperse pressure, avoid excessive local stress on connection parts, and significantly improve the safety factor of the overall structure, ensuring stable performance under extreme loads.
• Fine Precision Processing: Equipped with exquisite surface treatment technology and high thread precision, our heavy-duty carbon steel screws ensure a smooth fastening process, prevent thread biting, and extend the service life of both the screws and assembled components.
• High-Quality Carbon Steel Material: Made of high-strength carbon steel and optional weather-resistant materials, these Carbon Steel Large Hex Head Screws have excellent tensile strength and corrosion resistance, adapting to harsh environments such as high humidity, high temperature and chemical exposure.

Applications

• Infrastructure Construction: Carbon Steel Large Hex Head Screws are widely used in the construction of bridges, tunnels, roads and other public facilities, effectively strengthening structural stability and withstanding heavy loads.
• Energy Industry: Ideal for wind turbines, oil rigs, nuclear power plants and other places with high safety requirements, these carbon steel hex head fasteners provide reliable fastening to ensure equipment operation safety.
• Heavy Machinery: Used for the assembly and maintenance of construction machinery equipment such as cranes, excavators and trucks, our heavy-duty carbon steel screws meet the high-strength requirements of heavy machinery operation.
• Aerospace: Suitable for aircraft fuselages and rocket launchers subjected to severe vibration and temperature changes, these Carbon Steel Large Hex Head Screws deliver stable performance in extreme aerospace environments.
• Railway Transport: Applied in high-speed trains and track laying, these carbon steel hex head fasteners ensure passenger safety and smooth travel, withstanding long-term vibration and load pressure.