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DIN913 Hexagon Socket Set screws Manufacturer In China

Ningbo Teng Qi Fasteners Co., Ltd specialize in producing high-quality screws designed to meet the exacting standards of the Din913 specification. DIN913 screws feature a hexagon socket for easy and precise tightening using an Allen wrench, and a flat point that ensures a flush and smooth connection. These screws find versatile applications across industries, providing a secure and reliable solution for various mechanical assemblies and machinery.

we take pride in producing high-quality screws crafted from a variety of materials, including high-strength steel SCM435, alloy steel ML40CR, medium to low-carbon steel, copper, aluminum, and stainless steel. Our products adhere to multiple standards such as GB, DIN, ANSI, BS, JIS, ISO, SP, showcasing versatility and compliance. Trust in our commitment to precision manufacturing and quality, delivering screws that meet diverse industry standards and material requirements.


din913 set screw
Stainless Steel DIN913 Set Screw


The DIN 913 set screw is a precision-engineered fastener adhering to the German DIN standard. Notable for its flat point, this set screw provides a flush installation and is commonly crafted from materials like steel or stainless steel. Featuring a hexagon socket drive for ease of use, it conforms to metric threads with various surface finish options. Available in diverse sizes, the DIN 913 set screw is a versatile solution widely applied in machinery, automotive, and electronics, offering secure fastening with a focus on precision and reliability. Here are some common specifications for set screws:

Product Name:DIN913 Set Screw
The diameter of a Din913 set screw refers to the measurement across the screw, typically at the widest point. This is often specified using the metric system, such as M3, M4, M6, etc. These values represent the nominal diameter of the screw and help in choosing the appropriate size for a particular application.
LengthThe length of a Din913 set screw is the measurement from one end (usually the bottom of the head or the point, depending on the design) to the other end. It represents how far the screw extends into the material it's securing.
ClassSteel: 45H
Stainless Steel;A2-70,A4,C3,A2-50
TypeHexagon socket set screw with a flat point.
Material High-strength steel (e.g., SCM435)
Alloy steel (e.g., ML40CR)
Medium to low-carbon steel
Stainless steel
Manufacturing Processwire drawing, cold heading, thread rolling, heat treatment, surface treatment
Surface treatmentBlack Oxide Coating/Zinc Plating (Electroplating)/Hot-Dip Galvanizing/Mechanical Galvanizing/Dacromet Coating/Painting or Powder Coating

When specifying set screws, it’s important to consider the requirements of your application to ensure that the chosen set screw is compatible with the materials, forces, and conditions it will encounter.

Dimension Chart of DIN913:

1. Thread Diameter (d): The thread diameter of a DIN 913 set screw refers to the main diameter of its threads, typically measured in millimeters.

2. Thread Pitch (p): Thread pitch indicates the distance between threads on the screw and is measured in millimeters. It is a crucial dimension for DIN 913 set screws.

3. Hex Key Size (Across Flats) (s): The set screw features an internal hexagon socket for tightening with a hex key or wrench. Hex key size (across flats) is the distance between two parallel hexagonal sides of this socket.

4. Hex Key Depth (t): Hex key depth refers to the depth of the internal hexagon socket, representing the maximum depth a hex key can be inserted into the set screw.

5. Set Screw Length: This is the measurement from the bottom of the set screw (or from the end of the threads, in the case of headless set screws) to the end of the threads. It determines how deeply the screw can be threaded into a tapped hole or onto a shaft.

Thread Diameter(d)Thread Pitch(P)Hex Key Size (s) Hex Key Depth (t) min

Application of  DIN913 Set Screw:

The DIN 913 set screw is characterized by its flat point, allowing for a flush or nearly flush installation when tightened. Here are more detailed explanations of its applications in specific industries:

Machinery and Manufacturing:These set screws are commonly used to secure gears, adjusting mechanisms, and other components in machinery, providing stability and alignment.
Automotive:In the automotive industry, DIN 913 set screws may be utilized to secure specific components where a protruding screw head is undesirable, contributing to a streamlined and efficient design.
Aerospace:Due to their precision and reliability, these set screws find application in the assembly of aerospace components, ensuring secure fastening without compromising aerodynamics.
Electronics:In electronic devices and equipment, these screws are used to secure internal components, maintaining a low-profile design often crucial in compact electronic assemblies.
Medical Equipment:The screws play a role in medical device assembly, contributing to the secure fastening of components in equipment used in healthcare settings.
Construction:In construction, DIN 913 set screws might be employed for specific applications where a flush installation is required, contributing to a clean and finished appearance.
Instrumentation:These screws are used in precision instruments where maintaining a flush surface is essential for accuracy and proper functioning.
Furniture:Commonly used in furniture assembly, DIN 913 set screws contribute to the structural integrity of furniture while maintaining a clean and polished look.
Railway Industry:In the assembly of railway equipment, these screws may be used for specific applications, providing a secure and flush fit in rail-related components.

Manufacturing Quality Control of Set Screw:

As a leading set screw manufacturer, our commitment to excellence is reflected in our rigorous manufacturing quality control processes. We meticulously inspect each set screw, ensuring precise dimensions, accurate threading, optimal material composition, and impeccable surface finish. Our quality control measures extend to torque resistance and hardness testing, guaranteeing that every product meets or exceeds industry standards. With a relentless dedication to quality assurance, we take pride in delivering reliable and top-notch set screws to meet the diverse needs of our valued customers.

Control MethodDetail
Material Inspection:Verify the material's composition, heat treatment, and quality upon receipt. Conduct metallurgical analysis to ensure the material properties meet the standards.
Process Control:Implement strict process control measures for heat treatment, machining, threading, and any other manufacturing steps. Maintain consistent process parameters to ensure uniform quality.
Inspection Points:Introduce inspection points at various stages of manufacturing to check for defects, dimensions, and quality. Inspect threading, dimensions, surface finish, and other critical parameters.
Sampling and Testing:Regularly sample products for testing, such as tensile testing, hardness testing, and metallurgical analysis, to ensure they meet the required specifications.
Thread Inspection:Thoroughly inspect threading using proper thread gauges to ensure accurate dimensions and fit with mating components.
Traceability:Implement a traceability system to track each fasteners journey from raw material to final product. This aids in accountability and recalls if necessary.