S-91280A078 M8 x 10 mm ISO 4017, DIN 933 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength with Class 8.8 steel construction providing 110,000 psi capability for reliable load-bearing performance
• Superior corrosion resistance through black oxide surface treatment that extends service life in demanding environments
• Optimized torque transmission via external hex drive design that prevents tool slippage during installation
• Maximum thread engagement with fully threaded shank design ensuring superior clamping force distribution
• Precision threading compatibility with Class 6g tolerance and M8x1.25 coarse pitch for quick assembly and vibration resistance
• Industry-standard compliance meeting ISO 4017 specifications for consistent quality and interchangeability
• Environmental regulation adherence with RoHS 3 and REACH compliance for global manufacturing applications

Professional Applications & Engineering Value

These M8 hex head screws deliver critical engineering advantages for industrial assembly applications where vibration resistance and structural integrity are paramount. The Class 8.8 steel construction provides optimal strength-to-weight ratio while maintaining ductility, preventing brittle failure under dynamic loads. The coarse thread pitch (M8x1.25) ensures rapid installation and superior performance in materials where fine threads might strip or compromise joint integrity. The fully threaded design maximizes surface contact area, distributing clamping force evenly across the entire fastener length - particularly valuable in applications requiring adjustment flexibility. The black oxide finish offers corrosion protection without significantly altering dimensional tolerances, making these metric hex screws ideal for machinery, equipment manufacturing, and structural frameworks where precise fit and long-term reliability are essential.

Specification Summary & Compliance

This M8 hex head screw features precision Class 6g thread fit according to ISO metric standards, ensuring consistent engagement with mating components. Manufacturing conforms to ISO 4017 specifications (equivalent to DIN 933) for dimensional accuracy and mechanical properties. The fastener demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming suitability for international industrial markets. With Rockwell C21 hardness and verified 110,000 psi tensile strength, these screws meet the rigorous demands of professional engineering applications where material traceability and performance certification are required.