S-91280A091 M8 x 100 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
- Enhanced load-bearing capacity with Class 8.8 steel construction, providing 110,000 psi tensile strength for demanding industrial applications
- Superior torque transmission through the external hex drive design, ensuring secure installation and removal with standard tools
- Optimized thread engagement with M8 coarse (1.25mm pitch) threading and Class 6g fit, enabling faster assembly and reduced cross-threading risks
- Full-length threading along the 100mm shaft offers maximum fastening flexibility and adjustment range in various material thicknesses
- Exceptional durability with Rockwell C21 hardness and black finish, resisting wear and corrosion in harsh operating environments
- Global compliance assurance meeting ISO 4017 DIN 933 manufacturing standards for consistent quality and dimensional accuracy
- Environmental regulation compliance with RoHS 3 and REACH, ensuring safe use across international markets
Professional Applications & Engineering Value
These M8 hex head screws deliver critical performance in heavy-duty industrial applications where vibration resistance and structural integrity are paramount. The Class 8.8 steel construction combined with fully threaded design provides exceptional clamping force distribution across joined components, preventing joint failure in machinery, structural frameworks, and equipment assembly. The coarse metric thread with Class 6g tolerance ensures rapid installation in both metallic and non-metallic materials while maintaining precise fit. The external hex drive facilitates high-torque application without stripping, making these black steel screws ideal for automotive, construction, and manufacturing sectors where reliability under stress is non-negotiable.
Specification Summary & Compliance
Manufactured to ISO 4017 DIN 933 specifications with Class 6g thread fit tolerance ensuring dimensional precision. The M8 x 1.25mm coarse thread configuration provides standardized compatibility across metric fastener systems. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety and unrestricted international distribution. Mechanical properties include 110,000 psi tensile strength and Rockwell C21 hardness per industrial grade requirements.
