S-91280A538 M8 x 30 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 for extended service life in demanding environments
- High-strength Class 8.8 steel construction providing reliable 110,000 psi tensile strength for heavy-duty applications
- Precision coarse threading (M8 x 1.25mm) ensures faster installation and reduced cross-threading risks
- Full threading along the 30mm length offers maximum grip and load distribution across the entire fastener
- External hex head design allows for high torque application with standard tools and easy installation
- Rockwell C21 hardness rating maintains structural integrity under repeated stress and vibration
- Multi-standard compliance including ISO 4017, DIN 933, and SAE J1199 for global project compatibility
Professional Applications & Engineering Value
These M8 hex head screws deliver exceptional engineering value in industrial applications where vibration resistance and structural integrity are critical. The Class 8.8 strength grade steel combined with zinc plating creates a durable fastener capable of withstanding harsh environmental conditions while maintaining its protective properties. The coarse thread design (1.25mm pitch) provides superior holding power in both soft and hard materials, reducing the risk of stripping during installation. With full threading along the 30mm length, these screws distribute clamping force evenly, making them ideal for machinery assembly, structural frameworks, and equipment manufacturing where consistent performance under load is essential. The external hex drive enables high-torque installation without slippage, ensuring secure fastening in high-vibration environments.
Specification Summary & Compliance
These metric hex head screws feature precise Class 6h thread fit tolerance and M8 x 1.25mm coarse threading according to ISO metric standards. Manufacturing complies with ISO 4017, DIN 933, and SAE J1199 specifications, ensuring dimensional accuracy and performance reliability. The fasteners are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making them suitable for global industrial applications with strict material restrictions.
