Square head bolt specifications
Customized specifications for square head bolts mainly include the diameter and length of the bolt, as well as the specific dimensions of the head and threads.
The diameter range of square head bolts is usually between M8 and M18. Common specifications include M8, M10, M12, M14, M16, M18, etc. The length can be customized according to specific needs, usually ranging from a few centimeters to dozens of centimeters.
Almost all sizes are in stock. Fast delivery and shipped in bulk.
Custom fasteners can be produced overnight if needed.
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The main features of square head bolts include the following aspects
Easy installation: The head of the square head bolt is designed to be square and closely matches the screw, making the installation and disassembly process more convenient and faster.
Strong load-bearing capacity: The head of the square head bolt is squeezed together with the screw, which can withstand large torque and tension, ensuring the stability and safety of the component.
Anti-loosening fixation: The head of the square head bolt fits closely with the plane of the screw, which can effectively prevent loosening during use and ensure the quality and stability of the product.
Corrosion Resistance: Made of high-quality materials, it has strong corrosion resistance and is suitable for harsh environments.
The production process of square head bolts mainly includes the following steps
Material selection: The main materials of square bolts are carbon steel, stainless steel and copper. Carbon steel is widely used because of its good workability and lower cost; stainless steel is used in specific environments because of its corrosion resistance and heat resistance; copper is used in certain applications because of its electrical conductivity and corrosion resistance. Excellent performance.
Wire processing: Choose wires with a diameter of 5-19 mm as raw materials, which are mainly made of carbon steel, stainless steel and copper. The wire needs to be rough-drawn and fine-drawn to remove the oxidized skin and adjust the diameter of the wire to make it suitable for subsequent processing
Rough drawing processing: including annealing and pickling and phosphating. Annealing is to adjust the crystal structure, reduce hardness and eliminate particles by heating the wire and cooling it slowly; pickling and phosphating is to remove the oxide film on the surface of the wire through pickling to form a phosphate film to facilitate subsequent processing.
Precision drawing processing: According to product requirements and specifications, the wire is drawn to the corresponding wire diameter thickness to facilitate further processing and shaping2.
Forming process: including cold heading, tail clamping and thread rolling. Cold heading is to cut the wire into the required length, and punch out the nut and logo; tail clamping is to make the wire into a dovetail shape; thread rolling is to roll out the thread of the semi-finished product through the interaction of the movable die plate and the fixed die plate. Complete the basic shaping of the screw.
Heat treatment processing: including cleaning, high-temperature carburizing, quenching, cleaning quenching oil and low-temperature tempering. This series of steps is designed to increase the hardness of the screw and ensure its final performance requirements.
Square head bolt customization process
1. Determine the specific requirements such as the specifications, size, material and quantity of the screws that need to be customized.
2. Design drawings of square head bolts, detailing key parameters such as thread shape, angle, depth, diameter, etc.
3. Make samples for testing and evaluation.
4. After passing the sample test, enter the production stage. This includes material procurement, processing, heat treatment, surface treatment and other aspects.
5. After production is completed, strict inspection and packaging are carried out. Inspection ensures that the quality of the screws is up to standard, and packaging ensures safe transportation and storage of the product.
Square head bolts are widely used in many fields
Machinery Manufacturing: Commonly used in the assembly of vehicles, aircraft, construction machinery and other fields.
Construction Engineering: Used for connecting and fixing various building components, such as steel structures, bridges, large machinery and equipment, etc.
Other fields: also used in stage lighting and audio equipment, exhibition display equipment, etc.