S-91280A240 M5 x 35 mm ISO 4017, DIN 933, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional durability with Class 8.8 strength grade, providing reliable performance in demanding industrial environments
• Superior corrosion resistance through zinc plating, extending service life in various operating conditions
• Optimal thread engagement with Class 6h thread fit ensuring precise, secure fastening connections
• Enhanced installation efficiency through external hex drive design, allowing for quick assembly with standard tools
• Consistent mechanical properties with 110,000 psi tensile strength and Rockwell C21 hardness for predictable performance
• Full-threaded design providing maximum grip length and uniform stress distribution along the entire fastener
• Global compliance assurance meeting international standards for quality and environmental regulations

Professional Applications & Engineering Value

Engineered for precision and reliability, these M5 hex head screws deliver exceptional performance in industrial machinery, automotive assemblies, and structural applications. The Class 8.8 steel construction provides the necessary strength to withstand vibration and dynamic loads, while the zinc plating offers critical corrosion protection in challenging environments. The coarse metric thread with 0.8mm pitch ensures rapid installation and reduced cross-threading risks, making them ideal for production lines where efficiency is paramount. With full threading along the 35mm length, these fasteners distribute clamping force evenly, preventing joint relaxation and maintaining integrity under thermal cycling and mechanical stress. The external hex drive design accommodates high torque applications, ensuring secure fastening in heavy-duty assemblies where reliability cannot be compromised.

Specification Summary & Compliance

These metric hex head screws feature precise Class 6h thread fit tolerances and are manufactured to ISO 4017 and DIN 933 specifications, ensuring dimensional accuracy and interchangeability. The fasteners maintain compliance with ISO 898 mechanical properties standards and meet environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) requirements, making them suitable for global industrial applications where regulatory compliance is essential.