S-91310A790 M14 x 70 mm ISO 4014, DIN 931 High-Strength Metric Class 10.9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Class 10.9 strength grade, supporting up to 150,000 psi tensile strength for reliable performance in high-stress applications
• Superior corrosion resistance and durability through hardened steel construction with Rockwell C32 hardness, ensuring long service life in demanding environments
• Optimized thread engagement with M14x2mm coarse threading and Class 6g fit, providing secure fastening while reducing cross-threading risks during installation
• Efficient installation and removal with external hex head design (22mm width, 8.8mm height) allowing standard wrench access and high torque application
• Versatile partial threading (34mm minimum thread length on 70mm shaft) enables precise clamping force distribution across joined components
• Global compliance assurance meeting ISO 4014/DIN 931 manufacturing standards with RoHS 3 and REACH environmental regulations
• Right-hand coarse thread configuration delivers rapid assembly in most industrial applications while maintaining vibration resistance

Professional Applications & Engineering Value

This M14 hex head screw delivers critical engineering solutions for industrial equipment, machinery assembly, and structural frameworks where high tensile strength and vibration resistance are paramount. The Class 10.9 steel construction with Rockwell C32 hardness prevents stripping and deformation under extreme loads, while the coarse metric threading (2mm pitch) maintains secure fastening in high-vibration environments. The partially threaded design allows unthreaded shank sections to bear shear loads directly, making it ideal for precision alignment in construction, heavy equipment, and automotive applications. With ISO 4014 compliance ensuring dimensional accuracy and external hex drive facilitating quick installation, this fastener reduces assembly time while providing reliable long-term performance.

Specification Summary & Compliance

Manufactured to ISO 4014 specifications (equivalent to DIN 931) with Class 6g thread tolerance ensuring precise fit. The metric coarse thread (M14x2mm) follows standardized spacing with 34mm minimum thread length on a 70mm overall fastener. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming restriction of hazardous substances. Class 10.9 strength rating corresponds to 150,000 psi minimum tensile strength with Rockwell C32 hardness verification.