S-91280A978 M8 x 8 mm ISO 4017, DIN 933 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 tensile strength with 110,000 psi rating ensures reliable performance in high-stress applications, reducing failure risks
- Enhanced corrosion resistance from zinc plating extends service life in harsh industrial environments
- Precision Class 6h thread fit guarantees secure, vibration-resistant connections with minimal loosening
- Rockwell C21 hardness provides excellent wear resistance for repeated assembly and disassembly cycles
- Full threading design allows for maximum grip length and uniform load distribution across fastened components
- External hex head with 13mm width enables easy installation using standard tools, speeding up assembly processes
- Compliance with ISO 4017/DIN 933 standards ensures interchangeability and quality consistency in global supply chains
Professional Applications & Engineering Value
These M8 hex head screws deliver critical engineering value through their Class 8.8 steel construction and coarse 1.25mm pitch threading, specifically engineered to withstand dynamic loads and vibration in heavy machinery, automotive assemblies, and structural frameworks. The zinc plated finish provides essential corrosion protection for outdoor equipment and manufacturing facilities exposed to moisture. With fully threaded design ensuring maximum engagement, these metric fasteners prevent joint separation under stress while the external hex drive facilitates rapid installation in confined spaces. Ideal for production lines requiring consistent tensile strength and dimensional accuracy per ISO 4017 specifications.
Specification Summary & Compliance
Manufactured to ISO 4017/DIN 933 standards with Class 6h thread tolerance for precision fit. The M8 x 1.25mm coarse thread configuration maintains dimensional accuracy across production batches. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for international industrial applications.
