S-91310A964 M20 x 120 mm ISO 4014, DIN 931 High-Strength Metric Class 10.9 Steel Hex Head Screws
High-Strength Metric Class 10.9 Steel Hex 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 load-bearing capacity with 150,000 psi tensile strength and Class 10.9 grade, ensuring reliable performance under high stress.
- Superior wear and deformation resistance due to Rockwell C32 hardness, extending service life in demanding environments.
- Easy installation and removal with a standard 30mm external hex head, compatible with common tools for efficient assembly.
- Optimized thread engagement through M20 x 2.5mm coarse threading and Class 6g fit, providing secure fastening and vibration resistance.
- Reduced weight and material usage with partial threading design, ideal for applications where full threading is unnecessary.
- Guaranteed dimensional accuracy and interchangeability by conforming to ISO 4014/DIN 931 specifications, ensuring consistent quality.
- Safe for various industries as it is RoHS 3 and REACH compliant, meeting strict environmental and health regulations.
Professional Applications & Engineering Value
This M20 hex head screw is engineered from high-strength Class 10.9 steel to address critical challenges in heavy-duty applications. Its coarse metric thread (2.5mm pitch) and Class 6g thread fit ensure rapid assembly and robust clamping force, minimizing the risk of loosening under dynamic loads. The partial threading allows for precise load distribution, making it ideal for industrial machinery, structural frameworks, and construction projects where vibration and high tensile stress are common. With a Rockwell C32 hardness, it resists wear and corrosion in harsh environments, while the external hex drive facilitates quick installation with standard tools, reducing downtime and labor costs in heavy-duty assembly operations.
Specification Summary & Compliance
This screw adheres to precise metric dimensions, including a 120mm length and M20 x 2.5mm thread with Class 6g tolerance for consistent fit. It meets ISO 4014/DIN 931 manufacturing standards, ensuring reliable performance in mechanical and structural applications. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material sustainability.
