S-91280A566 M8 x 70 mm ISO 4017, DIN 933, 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
- High tensile strength of 110,000 psi ensures reliable performance in demanding applications
- Class 8.8 strength rating provides excellent load-bearing capacity for heavy-duty fastening
- Coarse 1.25mm pitch threading enables quick assembly and reduced cross-threading risks
- Class 6h thread fit guarantees precise engagement and vibration resistance
- Fully threaded design offers maximum grip length and uniform stress distribution
- External hex head allows for easy installation with standard tools and high torque application
Professional Applications & Engineering Value
This M8 hex head screw delivers exceptional engineering value in industrial settings where vibration resistance and structural integrity are paramount. The Class 8.8 steel construction combined with Rockwell C21 hardness provides optimal strength-to-weight ratio, preventing shear failure under dynamic loads. The coarse metric thread with 1.25mm pitch ensures rapid installation in production environments while maintaining Class 6h thread fit precision. Zinc plating offers sacrificial protection against corrosion in manufacturing facilities, automotive assemblies, and machinery applications. The fully threaded design distributes clamping forces evenly, making it ideal for securing heavy components in construction equipment, industrial frames, and transportation systems where reliable fastening solutions are critical for operational safety and longevity.
Specification Summary & Compliance
Manufactured to ISO 4017/DIN 933 dimensional standards with Class 6h thread tolerance for precise fit. Complies with SAE J1199 mechanical properties and meets ISO 898 strength requirements. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The metric coarse thread (M8 x 1.25mm) provides standardized compatibility with industrial components worldwide.
