S-91310A554 M8 x 70 mm ISO 4014, DIN 931 High-Strength Metric Class 10.9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior load-bearing capacity with Class 10.9 strength rating and 150,000 psi tensile strength for reliable performance in demanding applications
• Enhanced durability and wear resistance thanks to Rockwell C32 hardness and high-quality steel construction
• Secure and efficient installation with external hex drive and 13mm head width for excellent torque transmission
• Optimized thread engagement with M8 coarse thread (1.25mm pitch) and Class 6g fit ensuring vibration resistance
• Versatile partial threading design providing both gripping power and clearance where needed along the 70mm length
• Global compliance assurance meeting ISO 4014/DIN 931 manufacturing standards for consistent quality
• Environmentally responsible manufacturing with full RoHS 3 and REACH compliance for sustainable procurement

Professional Applications & Engineering Value

This M8 hex head screw delivers exceptional engineering value through its Class 10.9 steel construction and precision metric coarse threading. The partially threaded design with 22mm minimum thread length provides optimal stress distribution while allowing unthreaded sections to function as precision guides or clearance areas. The external hex drive with 13mm head width ensures maximum torque application without stripping, critical for assembly line efficiency. These high-strength fasteners solve common industrial challenges including vibration loosening, material fatigue, and corrosion concerns. Ideal for heavy machinery, structural steel connections, and automotive applications where ISO 4014/DIN 931 compliance guarantees dimensional accuracy and performance reliability across global projects.

Specification Summary & Compliance

Manufactured to precise metric dimensions with M8 x 1.25mm coarse threads meeting Class 6g thread fit tolerance. The 70mm length with partial threading conforms to ISO 4014/DIN 931 specifications for hex head screws. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures responsible material sourcing and manufacturing processes. The Class 10.9 strength rating corresponds to 150,000 psi minimum tensile strength with Rockwell C32 hardness, providing certified performance for critical industrial applications.