S-91290A161 M20 x 340 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 the most demanding heavy-duty applications, reducing the risk of fastener failure.
- Superior corrosion resistance from the black-oxide finish on alloy steel extends service life and maintains integrity in harsh industrial environments.
- High-strength Class 12.9 rating with Rockwell C37 hardness provides excellent resistance to wear, stripping, and deformation under high loads.
- Precise Class 5g6g thread fit and coarse 2.5mm pitch enable faster assembly, secure engagement, and reduced cross-threading risks.
- Convenient 17mm hex drive and standard socket head design allow for high-torque installation and easy access in confined spaces.
- Partially threaded 340mm length offers optimal grip range and shear strength, ideal for applications requiring precise clamping force.
- Full compliance with DIN 912, RoHS 3, and REACH guarantees consistent quality, material safety, and international standard adherence.
Professional Applications & Engineering Value
This M20 socket head cap screw is engineered to solve critical challenges in heavy machinery, automotive assembly, and structural frameworks where vibration, high stress, and environmental exposure are common. The black-oxide alloy steel construction combats rust and degradation, while the Class 12.9 strength class ensures the bolt withstands extreme tensile and dynamic loads without compromising integrity. The coarse metric thread (M20 x 2.5mm) and partially threaded design provide rapid installation and superior resistance to loosening, making it ideal for securing large components in construction, manufacturing, and industrial equipment. Its 17mm hex drive facilitates efficient torque application, reducing assembly time and improving operational reliability in high-stakes environments.
Specification Summary & Compliance
This metric socket head cap screw features an M20 x 2.5mm coarse thread with a Class 5g6g thread fit for precise dimensional accuracy. It is manufactured in accordance with DIN 912 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe and sustainable use in global industrial applications.
