S-91280A732 M12 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

• Exceptional durability with Class 8.8 strength grade and 110,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance through zinc plating, extending service life in harsh industrial environments
• Optimized thread engagement with coarse 1.75mm pitch and Class 6h thread fit ensuring secure fastening and vibration resistance
• Easy installation and removal with standard 19mm external hex head design compatible with common tools
• Versatile partial threading providing both threaded and unthreaded sections for precise clamping force distribution
• International compliance assurance meeting DIN 931 and ISO 4014 standards for global project compatibility
• Enhanced material integrity with Rockwell C21 hardness maintaining structural stability under heavy loads

Professional Applications & Engineering Value

This M12 hex head screw delivers critical engineering solutions for heavy-duty industrial applications where failure is not an option. The Class 8.8 steel construction combined with 110,000 psi tensile strength provides exceptional load-bearing capacity for structural assemblies, machinery frames, and equipment mounting. The zinc plated finish actively combats corrosion in challenging environments, while the metric coarse threading (1.75mm pitch) ensures rapid installation and superior resistance to vibrational loosening. The partially threaded design allows for precise clamping control, making it ideal for applications requiring specific grip ranges. Meeting DIN 931 and ISO 4014 specifications, this external hex drive fastener offers reliable performance in construction, manufacturing, and automotive sectors where consistent quality and dimensional accuracy are paramount.

Specification Summary & Compliance

This metric hex head screw features precise M12 x 1.75mm coarse threading with Class 6h thread fit tolerance ensuring dimensional accuracy. The 70mm length with 30mm minimum thread length provides optimal engagement characteristics. Manufactured to ISO 4014, DIN 931, and ISO 898 mechanical property standards, this fastener maintains strict quality control throughout production. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting the latest environmental and safety regulations for industrial components.