S-91290A149 M20 x 400 mm DIN 912 Alloy Steel Socket Head Screws
Alloy Steel Socket Head 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
- Exceptional tensile strength of 170,000 PSI ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance from the black-oxide coating extends service life in demanding industrial environments.
- Precise hex socket drive with 17mm size allows for secure tool engagement and high torque application without slippage.
- Partially threaded design provides optimal grip and clamping force where full threading isn't required, enhancing assembly efficiency.
- Class 12.9 strength rating guarantees consistent performance for critical machinery and structural applications.
- Coarse 2.5mm pitch threads enable faster installation and better resistance to vibration loosening in heavy equipment.
- Full regulatory compliance with DIN 912, RoHS 3, and REACH ensures safety and environmental responsibility in global markets.
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, this M20 socket head cap screw delivers exceptional reliability in machinery assembly, automotive systems, and structural frameworks. The black-oxide alloy steel construction provides superior corrosion resistance, while the Class 12.9 strength class and 170,000 PSI tensile strength prevent elongation and failure under extreme loads. The partially threaded metric screw design offers precise clamping control in bolted joints, and the coarse 2.5mm pitch right-hand threads ensure rapid installation and vibration resistance. With hex drive compatibility and DIN 912 compliance, it meets rigorous engineering standards for precision and durability in demanding environments.
Specification Summary & Compliance
This socket head cap screw features M20 x 2.5mm coarse pitch threads with Class 5g6g thread fit for precise dimensional accuracy. It complies with DIN 912 standards for metric hex socket head screws and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Manufactured from alloy steel with a Rockwell C37 hardness, it ensures consistent performance in industrial fastening applications.
