S-91280A981 M8 x 90 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 corrosion resistance with zinc plating that protects against rust in demanding 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 critical structural and machinery applications
- Rockwell C21 hardness maintains thread integrity and prevents stripping during installation
- Full threading along the 90mm length offers maximum grip and uniform load distribution
- External hex drive design allows for easy installation with standard tools and high torque application
- Coarse M8x1.25 thread pitch enables quick assembly and reduced cross-threading risk
Professional Applications & Engineering Value
These M8 hex head screws deliver exceptional engineering value in demanding industrial settings where vibration resistance and structural integrity are paramount. The Class 8.8 steel construction combined with zinc plating addresses common failure points in heavy machinery, construction equipment, and automotive assemblies by providing superior corrosion protection while maintaining 110,000 psi tensile strength. The fully threaded metric design with coarse 1.25mm pitch ensures rapid installation in production environments while the external hex drive accommodates high torque requirements. Engineered to ISO 4017 standards (equivalent to DIN 933), these industrial screws provide reliable fastening solutions for structural steel connections, machinery frames, and equipment that demands consistent performance under dynamic loads.
Specification Summary & Compliance
This M8 hex head screw features precise Class 6h thread fit tolerance for consistent engagement and meets ISO 4017 manufacturing specifications. The fastener maintains dimensional accuracy with 90mm length, 13mm head width, and standardized metric coarse threading. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and restricted substance adherence for global industrial applications.
