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Hex Socket Head SEMS Screws with Flat

Hex Socket Head SEMS Screws With Flat are mechanical screws with pre-installed spring lock washers and flat washers, which can effectively save installation time and improve work efficiency.

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As a manufacturer in China, we aim to provide high-quality products that cater to the needs of merchants outside of China. Our Hex Socket Head SEMS Screws with Flat are an excellent example of our commitment to excellence, engineering, and innovation. Our screws are designed to provide outstanding functionality and value for our clients, creating an optimal and stress-free user experience.


Our Hex Socket Head SEMS Screws with Flat are specifically designed to provide a solid and dependable solution for complex projects. Made with precision engineering in mind, the screws are built with premium materials that meet or exceed industry standards. Our "SEMS" design, which incorporates a washer that is pre-assembled onto the screw, allows for quick and easy installation without the need for additional hardware.


The Hex Socket Head design of our screws offers excellent torque capabilities, making them ideal for applications where joint strength and security are a priority. Our screws are designed to offer reliable and repeatable performance, ensuring that you can trust them in the most challenging environments.


Our Hex Socket Head SEMS Screws with Flat have several significant advantages over the competition. First, our screws are made with precision engineering and premium materials, ensuring that they will perform reliably even under the harshest conditions. Second, our SEMS design eliminates the need for additional hardware, making installation fast and easy. Thirdly, our hex socket head design offers increased torque capabilities, providing additional strength and security for your projects.


Our screws are perfect for a wide range of applications across a variety of industries, including automotive, aerospace, construction, industrial, and more. They are ideal for fixtures, assemblies, panels, and other critical components that require secure and reliable fasteners. Our screws are available in a range of sizes and finishes to meet the specific requirements of our clients.


Product Specifications:


Fastener Type: Hex Socket Head SEMS Screws with Flat


Material: Steel, Stainless Steel, Brass, Copper or other materials upon request


Finish: Zinc, Black Oxide, Nickel, Chrome, Phosphate or other finishes upon request


Head Type: Hex, Countersunk, Pan, Button, Mushroom, Truss, or other head types upon request


Thread: Metric, UNC, or UNF


Size: M2-M16, #6-3/4


Length: 3mm-200mm, 1/8"-6"


Product Advantages:


1. Precise engineering and premium materials ensure reliable and repeatable performance.


2. SEMS design eliminates the need for additional hardware, making installation fast and easy.


3. Hex socket head design offers excellent torque capabilities, providing additional strength and security for your projects.


4. Multiple sizes and finishes offer versatility and adaptability for a wide range of applications.




We are committed to providing our clients with high-quality products that meet or exceed industry standards. Our Hex Socket Head SEMS Screws with Flat are a testament to our dedication to excellence, innovation, and customer satisfaction. We invite you to contact us today to learn more about our products and how we can help your business succeed.



There are two main features of Hex Socket Head SEMS Screws with Flat, one is a hexagon socket and the other is a flat head. Hexagon socket screws, as the name suggests, have six surfaces, which also means that they have more surface area and therefore they can withstand more load forces.The design of the flat head is similar to the countersunk head screws, which can embed the nail head in the machine part, which increases the connection strength and ensures the aesthetics of the surface of the machine part. Our products have various specifications and surface treatment, you can choose the one you need or contact us for customization.


1. The products are galvanized to improve the corrosion resistance, making their appearance more beautiful and the colour more uniform.

2. The head of the screws can sink completely without affecting the appearance of the parts or scratching the hands.

3. The rotating threads make connection firmer. And the threads are neat and clear without defect.

Product Details

● Product Type: Screws/Bolts

● Product Name: Hex Socket Head SEMS Screws With Flat

● Size: M3-M14; #0-#12;1/4-9/16;ST2.9-ST9.5; Special size can be enquired and supported

● Product Executive Standards: ANSI, DIN, ISO, GB;or Per customer's drawing

● System of Measurement: Metric/Inch

● Head type: Hex Socket Head

● Material: Low carbon steel / medium carbon steel / alloy steel

● Grade: Quenching and tempering heat treatment--4.6/4.8/5.6/5.8/6.8/8.8/9.8/10.9/12.9/Grade 5/ Grade 8;

Case harden-- Surface hardness min450HV

core hardness 270 ~ 390HV/290~370HV

● Support non-standard customization

● Country of Origin: China



Our advantage

Customized--We are the manufacturer! sample &OEM&ODM are available!

Safety--We have own test chart, all of our products have been rigorously tested in the factory.

Certification--We have CE and quality management system certification.

High Quality --Our company uses the most advanced equipment to make the best quality products.



Why choose us?

  • We use the latest technology and production techniques to produce Non-standard Customization products that are durable, efficient, and highly effective.
  • We always regard innovation as our life, and advocate innovation by all staff and in all aspects, and focus on creating the most advanced and high-quality Hex Socket Head SEMS Screws with Flat.
  • We are dedicated to delivering Non-standard products that are tailored to meet the specific requirements of our clients.
  • We will deeply implement the brand strategy, and aim to become a large modern and excellent enterprise group with satisfied customers, satisfied employees.
  • As a leading supplier and manufacturer of Non-standard Customization products, we are committed to quality, precision, and customer satisfaction.
  • Our company has set up key laboratory test bases and key practice bases, further realizing the combination of front-end theoretical knowledge and application practice in the industry.
  • Our company specializes in producing Non-standard products that are durable, reliable, and built to last.
  • Our company is based on the principle of honesty, equality and reciprocity, and creating a sense of achievement for customers.
  • Our team of professionals is committed to providing customized solutions and innovative products that meet the evolving needs of our clients.
  • Our company has always been committed to the improvement of service quality, and constantly meets new challenges based on the concept of 'quality-oriented, honesty and the world'.

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