S-91280A649 M10 x 70 mm ISO 4014, DIN 931, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating for extended service life in demanding industrial environments
• Exceptional mechanical strength with Class 8.8 steel construction providing 110,000 psi tensile strength for heavy-duty applications
• Optimized thread engagement with M10 coarse thread (1.5 mm pitch) ensuring faster assembly and reduced cross-threading risk
• Reliable hardness performance with Rockwell C21 rating maintaining structural integrity under vibration and load
• Secure external hex drive enabling high-torque installation with standard tools while preventing stripping
• Versatile partial threading allowing both clamping and alignment functions in structural connections
• Full regulatory compliance meeting international ISO 4014/DIN 931 standards plus RoHS 3 and REACH environmental requirements

Professional Applications & Engineering Value

These M10 hex head screws deliver critical engineering solutions where vibration resistance and structural integrity are paramount. The Class 8.8 steel construction combined with zinc plating creates a durable fastener capable of withstanding harsh environmental conditions while maintaining consistent clamping force. The coarse thread design (1.5 mm pitch) ensures rapid installation in structural steel, machinery frames, and heavy equipment assemblies, reducing assembly time while providing secure fastening. The partially threaded configuration allows for precise joint compression while the unthreaded shank section bears shear loads effectively. These metric hex bolts are engineered to prevent loosening under dynamic loads, making them ideal for construction equipment, industrial machinery, and transportation applications where reliability cannot be compromised.

Specification Summary & Compliance

Manufactured to precise ISO 4014 and DIN 931 specifications with Class 6h thread fit tolerance ensuring consistent mating with standard nuts. The 70 mm length provides 26 mm minimum thread engagement for optimal strength. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, alongside mechanical properties meeting ISO 898 requirements for Class 8.8 fasteners.