
Socket Hex Head Screw
Socket hex head screw cap screws are a type of fastener that is characterized by a screw head that is rounded on the outside and has a concave hexagonal shape in the middle. This design makes hexagon socket head cap screws require the use of a hexagonal screwdriver for installation and removal, rather than the common use of a one-piece screwdriver or Phillips screwdriver. Hexagon socket head cap screws are widely used in the fixing of various mechanical and electronic equipment, providing better fastening effect and higher safety due to their unique structural design.
- Product Introduction
Why Choose Us
Diverse Applications
Products are used in various industries, including: Aerospace, petrochemical refining, oil and gas, chemical processing, power generation, pharmaceuticals, food and beverages, rail transit, ships, medical industry, semiconductors and water treatment products in special fields or with special usage environment requirements.
Rich Product Range
We specialize in fasteners and custom parts in nickel-based alloys, titanium, duplex steels, 6% molybdenum and specialty stainless steels. The company's main products: Bolts, nuts, screws, washers, studs, sleeve products, screws, U-bolts and flanges, and provides customers with non-calibrated parts processing services.
Fast Delivery
With millions of dollars of inventory in our product warehouse, we have enough inventory for each product, which allows us to quickly select, pack and ship products to fulfill your order efficiently and timely. Complete production lines also enable rapid production and delivery of customized products.
Strict Management
We strictly supervise each production link and strictly follow the company's production system and industry standards. Our products comply with applicable ASTM, ANSI, ASME, SAE, API, NAS, AN, MS and other standards to provide quality assurance for our products.
Socket hex head screw cap screws are a type of fastener that is characterized by a screw head that is rounded on the outside and has a concave hexagonal shape in the middle. This design makes hexagon socket head cap screws require the use of a hexagonal screwdriver for installation and removal, rather than the common use of a one-piece screwdriver or Phillips screwdriver. Hexagon socket head cap screws are widely used in the fixing of various mechanical and electronic equipment, providing better fastening effect and higher safety due to their unique structural design.
Our metric flat head screws are manufactured by the cold heading and hot forming technologies in nominal diameters ranging from 1/8"- 3" (M3 – M80). We offer fasteners in both USCS/Imperial and metric sizes.
Button Head Socket Head Cap Screw
Our Button Head Socket Cap Screws are manufactured by the cold heading and hot forming technologies in nominal diameters ranging from 1/8"- 3" (M3 – M80). We offer fasteners in both USCS/Imperial and metric sizes.
We are advanced and comprehensive range of capabilities include engineering, R&D, prototyping, custom manufacturing, precision processing and testing. Our all materials are sourced from the most reputable and exacting foundries in the world. We maintain a multi-million-dollar inventory of fasteners in our product warehouse, which enables us to select, package and expedite your button head socket cap screw order quickly.
Our Hex Socket Set Screws are manufactured in nominal diameters ranging from 1/8"- 3" (M3 – M80). We offer fasteners in both USCS/Imperial and metric sizes.
We are advanced and comprehensive range of capabilities include engineering, R&D, prototyping, custom manufacturing, precision processing and testing. Our all materials are sourced from the most reputable and exacting foundries in the world. We maintain a multi-million-dollar inventory of fasteners in our product warehouse, which enables us to select, package and expedite your hex socket set screw order quickly.
Slotted Truss Head Machine Screws
There are two major varieties of screws- machine screws and manual screws. The major difference between them is that machine screws are tightened by an electrical drill machine, whereas manual screws are fitted manually. Due to this, machine screws are better at fastening components than manual screws.
According to sizes, materials, models, and configurations, there are various kinds of machine screws available in the market, like stainless steel (SS) machine screws, brass machine screws, Phillips head machine screws, tamper-resistant machine screws, plated machine screws, Torx heads, slotted or flat-head machine screws, hex-head machine screws, Fillister machine screws, and Pan-head machine screws.
Machine screws are used in making modular kitchens, furniture, construction equipment, etc. They are designed to be inserted into a pre-cut or pre-threaded hole. Machine screws consist of a head and a fully threaded shank. The exterior of this shank allows the machine screw to be inserted in the tapped hole and join the two ends.
12-Point flange screws, also known as Ferry Bolts, are high-strength fasteners where the flange diameter and head thickness of the 12-Point Flange Screw are equivalent to the head dimensions of a socket head cap screw, thus permitting the 12-Point Flange Screw to be a replacement for any application that calls for a socket head cap screw. The 12-point head design means that this screw can be tightened with a 12-point socket wrench, which allows higher torques to be applied compared to a standard internal hex drive socket head cap screw. The head or wrench size is the same as the body size.
Our socket hex head screw is manufactured by the cold heading and hot forming technologies in nominal diameters ranging from 1/8"- 3" (M3 – M80). We offer fasteners in both USCS/Imperial and metric sizes.
Type II Cross Recessed Truss Head Screws
1. Truss Head design: Type II Cross Recessed Truss Head Screws feature a Truss Head design, providing a larger contact area and better fastening strength.
2. Cross recess design: The product is equipped with a cross recess, making it easy to use with a screwdriver or screwdriver bit for installation and removal.
3. Multiple sizes and specifications: The product offers a variety of sizes and specifications to accommodate different application scenarios and thread requirements.
4. High-strength material: These are typically made from high-strength steel or stainless steel, providing excellent tensile strength and corrosion resistance.
5. Easy to use: The product is designed for easy installation and tightening, improving work efficiency.
6. Suitable for thin sheets: These are suitable for fastening thin sheet materials, such as metal sheets or plastic sheets.
7. Wide range of applications: This type of screw is widely used in furniture manufacturing, mechanical engineering, electronics, and other fields for securing and connecting various components.
8. High-precision manufacturing: Undergo high-precision manufacturing, ensuring accurate dimensions and consistency.
Type I Cross Recessed Pan Head Screws
1. Pan Head design: Type I Cross Recessed Pan Head Screws feature a Pan Head design, providing a larger contact area and better fastening strength.
2. Cross recess design: The product is equipped with a cross recess, making it easy to use with a screwdriver or screwdriver bit for installation and removal.
3. Multiple sizes and specifications: The product offers a variety of sizes and specifications to accommodate different application scenarios and thread requirements.
4. High-strength material: Are typically made from high-strength steel or stainless steel, providing excellent tensile strength and corrosion resistance.
5. Easy to use: The product is designed for easy installation and tightening, improving work efficiency.
6. Flat top design: The Pan Head design ensures that the screw head is flat, suitable for applications where the screw head needs to be flush with the surface.
7. Wide range of applications: This type of screw is widely used in mechanical engineering, electronics, furniture manufacturing, and other fields for securing and connecting various components.
8. Reliable fastening performance: The product's design ensures reliable fastening performance, preventing screws from loosening or coming off.
9. High-precision manufacturing: Undergo high-precision manufacturing, ensuring accurate dimensions and consistency.
10. Compliance with standards: The product complies with international and industry standards, ensuring consistent quality and performance.
Advantages of Socket Hex Head Screw
Anti-loosening
Hexagon socket head cap screws are fasteners with hexagonal holes that can be tightened with a hexagonal wrench or wrench socket. Due to higher tightness, hexagon socket head screws are not easy to loosen after tightening, which can effectively prevent mechanical equipment from loosening under vibration, impact and other environments, and improve the reliability and stability of the equipment.
Withstand Heavy Loads
Hexagon socket head cap screws, due to the hexagonal shape, can be more evenly distributed torque, increasing the expansion pressure of the connection, thereby increasing the load-bearing capacity of the connection. Therefore, in mechanical equipment and structures that need to bear heavy loads, hexagon socket head cap screws are usually more ideal fasteners.
High Temperature
Hexagon socket head cap screws are usually made of high-strength alloy steel material, with high strength and hardness, especially suitable for use in high-pressure, high temperature, strong acid and other harsh environments. Compared with ordinary screws, hexagon socket head cap screws have higher heat resistance, corrosion resistance and tensile strength.
Installation Convenience
The hexagonal hole of the hexagonal socket head cap screws is in the shape of a column, and it is not easy for the wrench to slip out when the cross bar is used for loosening and tightening, which makes the hexagonal socket head cap screws more convenient to be installed and disassembled. In addition, hexagon socket head cap screws are suitable for more assembly occasions, especially narrow occasions, assembly and maintenance are very convenient, debugging is also simple and easy to operate.
Aesthetics
Hexagon socket head cap screws can be buried head treatment, that is, the entire nut sunk into the inner workpiece, you can keep the surface of the workpiece flat, aesthetic.
Safety
Due to the design of the hexagon socket head cap screws, it is not easy to be easily disassembled by the general public, which increases the safety to a certain extent. Usually commonly used tools such as a flared wrench, screwdriver and dull wrench, etc., while the disassembly of hexagon socket head cap screws must be used with a special wrench, which increases the difficulty of disassembly.
Uses of Socket Hex Head Screw
Assembly Of Machinery And Equipment
Socket hex head screw are often used in the assembly of machinery and equipment. By tightening the hexagonal bolts, you can ensure that the various components of the equipment are tightly fixed together, so as to maintain the structural stability and normal operation of the equipment.
Automobile Manufacturing
Socket hex head screw are widely used in automobile manufacturing. Various components of automobiles, such as the engine, chassis, braking system, etc., all need socket hex head screw for fastening. The high strength and stability of socket hex head screw make them an indispensable part of automobile manufacturing.
Aerospace Industry
Socket hex head screw play an important role in the aerospace industry. Aircraft and spacecraft structures must be able to withstand high pressures, temperatures and high-speed loads under extreme conditions. Through their high strength and reliability, socket hex head screw ensure that aircraft and spacecraft structures are tightly connected and safe during flight or space missions.
Construction And Civil Engineering
Socket hex head screw are widely used in construction and civil engineering. In the construction of structures such as high-rise buildings and bridges, socket hex head screw are used for connecting and fixing different structural parts such as steel bars, beams and columns. The strength and stability of hexagonal bolts enable the building structure to withstand various loads and maintain its stability and safety.
Electronic And Electrical Equipment
Socket hex head screw are also used in the manufacture and assembly of electronic and electrical equipment. socket hex head screw are used to fasten different components and connect wiring during the assembly of circuit boards and electrical equipment. Their high-precision design and fastening ability ensure the normal operation and stability of electronic and electrical equipment.
Furniture Manufacturing
Socket hex head screw are widely used in furniture manufacturing. Different parts of furniture, such as legs of chairs, trays of tables, etc., are usually fastened using socket hex head screw. By using socket hex head screw, furniture can be assembled more securely and with better structural stability.
Sports Equipment And Outdoor Appliances
Socket hex head screw are also used in the manufacture of sports equipment and outdoor appliances. For example, in products such as climbing equipment, bicycles and skateboards, socket hex head screw are widely used to connect different parts and provide additional support.
Difference Between Hex Head Screws and Socket Hex Head Screw?
Head Design
Hex Head Cap Screws are flat on the tip of the screw, while Socket Head Cap Screws have a cylindrical head with a hexagonal socket. The difference is not only functional but also aesthetic. The Socket Head Cap Screw generally has a more modern look compared to the traditional look of the Hex Head Cap Screw.
Installation Tools
Hex Head Cap Screws require a crescent wrench to tighten them, while Socket Head Cap Screws simply require an Allen wrench. The benefit of using an Allen wrench is that it can access tighter places.
Applications
Hex Head Cap Screws are used in heavy-duty structural applications while Socket Head Cap Screws are used in applications where tight spaces or aesthetics are an issue. Socket Head Cap Screws are often found in technical equipment and electronics.
Debris
The disadvantage of the Socket Head Cap Screw is that debris can accumulate in the socket, which results in premature wear. Hex Head Cap Screws do not have this problem as there is no socket into which debris can fall.
Wear
This is a toss-up. Some people think the Socket Head Cap Screws have the advantage of not stripping as much as the Hex Head Cap Screw, while others feel it is the Hex Head Cap Screw that has the advantage, as the Socket Head Cap Screws rounds more easily.
Material
Hexagon socket head cap screws generally use carbon steel, alloy steel, stainless steel and other materials. Different materials are suitable for different environments and working conditions. Generally speaking, carbon steel is suitable for general environment, while stainless steel is suitable for high corrosive environment.
Specifications
The specifications of hexagon socket head cap screws include diameter, length, thread specifications and so on. Selection should be based on the need to use the parts and equipment to choose the appropriate specifications.


Surface Treatment
Hexagon socket head cap screws will generally be surface treatment to prevent corrosion and improve the appearance of quality. Surface treatment methods include zinc plating, chrome plating, phosphating and so on. Different surface treatment for different use of the environment and working conditions.
Quality Certification
When selecting and purchasing hexagon socket head cap screws, pay attention to check whether the quality certification. Common quality certification standards include ISO, DIN, ANSI and so on.
Production Process of Socket Hex Head Screw
Material selection: Different materials are selected according to the strength level of the bolt, and carbon steel, stainless steel and copper are the three main materials available in the market. Carbon steel is widely used due to its excellent workability and cost-effectiveness. Stainless steel is suitable for specific environments due to its excellent corrosion and heat resistance. Copper is commonly used in specific application scenarios due to its good electrical conductivity and corrosion resistance.
Spheroidizing (softening) Annealing: For steels that are to be cold headed, spheroidizing annealing is performed to improve their plasticity and to ensure the formation of a uniform and fine spheroidized pearlitic body during the cold heading process, which improves formability.
Scaling: Remove the oxidized layer on the surface of steel to facilitate the subsequent processing.
Cold-drawing: Cold-drawing the steel to the required wire diameter, which is an important step in the manufacture of bolts.
Cold Forging: The steel is cold forged into the required shape, this step is essential to ensure the accuracy and strength of the bolt.
Threading: Specialized tools or machines are used to machine the required threads on the bolt.
Heat Treatment: The bolt is heat treated to improve its hardness and corrosion resistance to ensure that it performs to standard.
Hexagonal Holes And Molding: The bolts are stamped out with hexagonal holes by means of dies and molded.
Thread Rolling: Use the thread rolling machine to process the threads on the bolt stem.
Inspection And Packaging: Conduct quality inspection on the completed bolts to ensure that they meet the specifications, and then pack them for shipment.
Precautions for the Use of Socket Hex Head Screw
Tool Selection
Choose a wrench or screwdriver that matches the specifications of the screw. Avoid the use of unsuitable tools, which may lead to slippage or damage to the screw.
Direction Of Force
When tightening hexagon socket head cap screws, make sure that the direction of force matches the hexagonal shape of the head of the screw to avoid slipping or damaging the screw in the wrong direction.
Preventing Breakage
When tightening hexagon socket head cap screws, control the force to avoid over-exertion, resulting in screw breakage. If the screws are found to be too tight, they should be loosened appropriately and then tightened again.
Regular Inspection
For important connection parts, should regularly check the socket head cap screw fastening. If found loose, should be re-tightened in time to ensure the stability and reliability of the connection.
Replacement And Maintenance
When the socket head cap screws are found to be severely worn or loose, they should be replaced with new screws in time. During maintenance, attention should be paid to protect the head of the screw from damage in order to extend its service life.
Handle The Situation Of Unscrewing
If the socket head cap screws can not be unscrewed, you can try to use the appropriate screwdriver, spray a little lubricant, heating the screw head and other methods. If none of these methods work, consider using a hydraulic wrench or seek professional help.
Our Factory
Ningbo Decheng Industrial Equipment Co., Ltd. is a private company specializing in high performance high temperature, corrosion resistance, high strength and other special material fasteners, headquartered in Zhejiang Province, China.
Founded in July 2019, the company is located in Ningbo, Zhejiang Province, China, with a registered capital of 300,000 US dollars. It is a privately owned enterprise, specializing in providing fasteners and custom parts of nickel-based alloy, titanium, biphase steel, 6% molybdenum and special performance stainless steel. We provide small-batch and multi-variety business services. Bolts, nuts, screws, washers, studs, sleeve products, threaded rods and U-bolts and flanges.

FAQ
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