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M3 x 20mm Socket Head Cap Screws Bolts 12.9 Grade Alloy Steel Metric Machine Hex Socket Screw, Black Oxide Finish, Fully Threaded, 50PCS
High quality: It is made of high quality 12.9 grade alloy steel, and the surface is treated with black oxide.
M3 x 20mm Socket Head Cap Screws Bolts 12.9 Grade Alloy Steel Metric Machine Hex Socket Screw, Black Oxide Finish, Fully Threaded, 50PCS
Item #: 173738683

M3 x 20mm Socket Head Cap Screws Bolts 12.9 Grade Alloy Steel Metric Machine Hex Socket Screw, Black Oxide Finish, Fully Threaded, 50PCS

Item #: 173738683

XAF 10221

Price Details

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*All items will import from US

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High quality: It is made of high quality 12.9 grade alloy steel, and the surface is treated with black oxide.
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What Stands Out

High-Grade Material
Manufactured from 12.9 grade alloy steel, ensuring exceptional strength and durability for demanding applications, outperforming standard screws in stress resistance and longevity.
Corrosion Resistance
Black oxide finish provides excellent protection against corrosion, making these screws ideal for use in various environments, enhancing their lifespan and reliability in diverse applications.
Versatile Sizing
Fully threaded M3 x 20mm size meets a wide range of fastening needs across multiple projects, offering flexibility and convenience for both professional and DIY uses.

Product Details

Shop M3 x 20mm Socket Head Cap Screws Bolts 12.9 Grade Alloy Steel Metric Machine Hex Socket Screw, Black Oxide Finish, Fully Threaded, 50PCS online at a best price in Equatorial Guinea. B0967ZK22Q
MaterialAlloy Steel
Thread SizeM3
Exterior FinishBlack Oxide
Manufacturer GradeGrade Alloy
Head StyleSocket
Package Dimensions 2.56 x 2.56 x 0.75 inches (6.5 x 6.5 x 1.9 cm); 2.4 ounces (68.04 grams)

Who Should Buy?

Suitable For
  • DIY Enthusiasts

    Ideal for hobbyists working on various projects requiring durable bolts that can withstand stress.

  • Professional Engineers

    Perfect for engineers who need high-grade fasteners for prototypes or machinery assemblies to ensure reliability.

  • Automotive Repair

    Functional for automotive technicians looking to replace or secure parts using robust and corrosion-resistant bolts.

Not Suitable For
  • Low-Strength Projects

    Not suitable for projects that require lower strength materials, as they may be overly robust for such applications.

Product Description

M3 x 20mm Socket Head Cap Screws Bolts 12.9 Grade Alloy Steel Metric Machine Hex Socket Screw, Black Oxide Finish, Fully Threaded, 50PCS

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What are M3 x 20mm Socket Head Cap Screws used for?

    Answer: M3 x 20mm Socket Head Cap Screws are commonly used in various mechanical applications, particularly where a strong and durable fastening solution is required. These screws are perfect for assembling components in machinery, automotive parts, electronics, and furniture. Their hex socket design allows for a better grip with a tool, making them ideal for high-torque applications. The black oxide finish provides corrosion resistance and improves aesthetics, ensuring they blend well with different materials.
  • Question: What does the 12.9 grade signify in bolts?

    Answer: The 12.9 grade signifies that these bolts are made from high-carbon alloy steel, providing superior strength and hardness. This grade is suitable for demanding applications where high tensile strength is necessary. The numbering system indicates that these screws can withstand higher stress loads compared to lower grade options. When used in conjunction with other high-strength components, they ensure the integrity and durability of assemblies in machinery and equipment.
  • Question: What is the advantage of the black oxide finish on screws?

    Answer: The black oxide finish on screws provides several benefits, including enhanced corrosion resistance, which helps prolong the lifespan of the components. Additionally, this finish reduces glare and improves the aesthetic appeal of the screws in visible applications. Moreover, the black oxide layer offers a slight increase in hardness, which enhances wear resistance. These features make black oxide screws a popular choice in both industrial and consumer products.
  • Question: Can M3 x 20mm Socket Head Cap Screws be reused?

    Answer: M3 x 20mm Socket Head Cap Screws can be reused, provided they haven't been damaged or excessively worn during initial use. Proper handling and installation techniques play a crucial role in maintaining their integrity. When reusing screws, it's essential to inspect them for signs of fatigue, such as deformation or threading issues. In applications where frequent disassembly is needed, these screws are ideal, allowing for easy maintenance and repairs while maintaining a strong connection.
  • Question: How do I choose the right tool for installing these screws?

    Answer: To install M3 x 20mm Socket Head Cap Screws, a compatible hex key or Allen wrench should be used. The size of the tool should match the screw's socket perfectly to avoid stripping the head. Depending on the torque requirements of your application, you may want to use a torque wrench to ensure accurate tightening. Choosing the right tool not only simplifies the installation process but also ensures that the screws can be securely fastened, minimizing the risk of loosening during operation.
  • Question: What is the difference between fully threaded and partially threaded screws?

    Answer: Fully threaded screws, like the M3 x 20mm Socket Head Cap Screws, have threads extending along the entire length of the shaft. This design provides consistent gripping power throughout the screw's length, making them suitable for applications where a strong hold is essential. In contrast, partially threaded screws have a section of unthreaded shaft that can offer greater alignment and stability in certain assemblies. The choice between the two depends on the specific requirements of the project.
  • Question: What is the importance of screw dimension standards?

    Answer: Screw dimension standards, including the M3 x 20mm specifications, ensure compatibility and interchangeability across a wide range of applications. These standards help manufacturers produce screws that fit specific requirements for size, thread count, and strength. Adhering to standardized dimensions allows for easy replacement and maintenance, as well as improving the overall reliability of mechanical systems. Understanding these standards is crucial for engineers and DIY enthusiasts when selecting fastening solutions for their projects.
  • Question: Are there recommended applications for M3 x 20mm Socket Head Cap Screws?

    Answer: Yes, M3 x 20mm Socket Head Cap Screws are recommended for applications in the automotive, aerospace, electronics, and machinery industries, among others. Their strength makes them suitable for use in high-stress environments and they are often employed in assembling components that require precision and reliability, such as engine parts, robotics, and computer hardware. The versatility of these screws allows them to be utilized in various manufacturing processes where secure fastening is critical.
  • Question: What should I consider when storing these screws?

    Answer: When storing M3 x 20mm Socket Head Cap Screws, it’s important to keep them in a dry, corrosion-free environment to ensure their longevity. Using a storage container that prevents moisture exposure will help maintain their surfaces and prevent rust. Additionally, organizing screws by size and type can facilitate quick access during projects. Proper storage is crucial, especially for high-grade screws, as it preserves their functionality and appearance for future use.
  • Question: Where can I buy M3 x 20mm Socket Head Cap Screws Bolts 12.9 Grade Alloy Steel Metric Machine Hex Socket Screw?

    Answer: You can purchase M3 x 20mm Socket Head Cap Screws Bolts 12.9 Grade Alloy Steel from Ubuy in Equatorial Guinea. Ubuy offers a convenient platform for sourcing this quality hardware, ensuring that you have access to reliable, high-strength screws that meet your project’s needs. Their extensive online selection makes it easy to find exactly what you are looking for, tailored to your specific requirements.

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