S-91280A429 M7 x 50 mm ISO 4017, DIN 933, 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 under heavy loads and vibration
- Class 8.8 strength grade provides excellent durability for demanding mechanical applications
- Coarse 1 mm thread pitch enables faster assembly and reduced cross-threading risks
- Rockwell C21 hardness maintains thread integrity and prevents stripping during installation
- External hex drive design allows for high torque application with standard tools
- Class 6h thread fit ensures precise engagement and consistent clamping force
Professional Applications & Engineering Value
These M7 hex head screws deliver exceptional engineering value in industrial applications where vibration resistance and structural integrity are critical. The Class 8.8 steel construction combined with zinc plating addresses common failure points in machinery, automotive, and equipment assembly by providing superior protection against corrosion and fatigue. The metric coarse threading with 1 mm pitch facilitates rapid installation in production environments while maintaining secure fastening. The fully threaded design ensures maximum grip length and uniform stress distribution, making these steel fasteners ideal for heavy-duty applications requiring reliable, long-term performance under dynamic loading conditions.
Specification Summary & Compliance
Manufactured to exacting ISO 4017/DIN 933 standards with Class 6h thread fit precision and 50 mm length tolerance. These metric screws comply with ISO 898 mechanical properties requirements and feature full regulatory compliance including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards. The external hex drive configuration and coarse thread spacing ensure consistent performance across industrial applications while maintaining strict dimensional accuracy.
