S-3638N117 M8 x 20 mm DIN 561B Set Screws
Set Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior holding power with Class 8.8 strength grade, ensuring reliable performance in demanding applications.
- Easy and secure installation using the external hex drive, providing excellent torque transfer and reducing tool slippage.
- Precise and deep engagement thanks to the extended tip design, enhancing grip and preventing component loosening.
- Robust durability from steel construction with Rockwell C20 hardness, offering excellent resistance to wear and deformation.
- Wide compatibility with coarse M8 x 1.25mm thread, allowing for quick assembly and reliable fastening in various materials.
- Guaranteed dimensional accuracy with Class 6g thread fit, ensuring consistent performance and interchangeability.
- Safe for regulated environments as it is RoHS 3 and REACH compliant, meeting strict international environmental standards.
Professional Applications & Engineering Value
This M8 hex set screw is engineered to solve critical fastening challenges in industrial settings. Made from Class 8.8 steel, it provides high tensile strength and fatigue resistance, ideal for machinery, automotive assemblies, and equipment where vibration and heavy loads are common. The coarse metric thread with a 1.25mm pitch ensures quick installation and strong holding power in soft or hard materials, reducing assembly time. The external hex drive allows for high torque application with standard tools, minimizing strip-out risks. Its extended tip digs securely into shafts or components, preventing slippage and maintaining alignment in precision applications. Complying with DIN 561B, this screw delivers consistent quality and reliability for OEM and MRO uses, enhancing product longevity and safety.
Specification Summary & Compliance
This set screw features an M8 x 1.25mm coarse thread with Class 6g tolerance for precise fit, a length of 20mm, and an extended tip with diameter 5.5mm and length 4mm (tolerance: 0 to 0.3mm). It meets DIN 561B manufacturing standards and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity.
