S-91280A891 M20 x 90 mm ISO 4014, DIN 931, SAE J1199, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws
Medium-Strength Metric Class 8.8 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
- Superior Corrosion Resistance with zinc plating, extending service life in harsh industrial environments
- Exceptional Tensile Strength rated at 110,000 psi for reliable performance in heavy-duty applications
- Precision Thread Fit with Class 6h tolerance ensuring secure fastening and vibration resistance
- Optimized Load Distribution through partially threaded design that concentrates strength where needed most
- Industry-Standard Compatibility with external hex drive and M20 coarse thread for universal tooling and replacement
- Enhanced Durability with Rockwell C21 hardness that maintains structural integrity under repeated stress
- Regulatory Compliance meeting international standards including RoHS 3 and REACH for global project suitability
Professional Applications & Engineering Value
Engineered for demanding industrial scenarios, these M20 hex head screws combine Class 8.8 strength grade steel with zinc plating to address critical challenges in construction, machinery assembly, and structural applications. The coarse thread metric design with 2.5mm pitch ensures rapid installation and superior grip in various materials, while the partially threaded configuration prevents joint loosening under dynamic loads. With external hex drive compatibility, these fasteners deliver maximum torque transmission for heavy-duty connections, making them ideal for applications requiring 110,000 psi tensile strength and reliable performance in corrosive environments. The combination of precise Class 6h thread fit and standardized dimensions per ISO 4014 and DIN 931 ensures consistent quality across industrial projects.
Specification Summary & Compliance
This hex head screw features M20 x 2.5mm coarse thread with Class 6h thread fit tolerance and 46mm minimum thread length. Manufactured to ISO 4014, DIN 931, and SAE J1199 specifications with Class 8.8 strength grade certification. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across international industrial applications.
