S-91280A311 M12 x 90 mm ISO 4014, DIN 931 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior Load-Bearing Capacity: Class 8.8 steel construction delivers 110,000 psi tensile strength for reliable performance in demanding applications
• Enhanced Durability: Rockwell C21 hardness provides excellent resistance to wear and deformation under stress
• Optimized Thread Engagement: Coarse 1.75 mm pitch ensures quick assembly and secure fastening in various materials
• Secure Installation: External hex drive with 19mm head width allows for high torque application and prevents stripping
• Versatile Partial Threading: 30mm minimum thread length provides flexibility for different material thicknesses and clamping requirements
• Environmental Compliance: Meets RoHS 3 and REACH standards for safe use in regulated industries
• Precision Manufacturing: Class 6g thread fit guarantees consistent performance and interchangeability

Professional Applications & Engineering Value

This M12 hex head screw delivers exceptional engineering value through its Class 8.8 steel composition and ISO 4014/DIN 931 compliance. The coarse thread pitch (1.75 mm) provides superior resistance to vibration loosening while enabling faster installation in structural steel, machinery, and heavy equipment applications. The partial threading design allows for precise clamping force distribution, making it ideal for assemblies requiring both secured fastening and adjustable positioning. With 110,000 psi tensile strength and Rockwell C21 hardness, this metric hex bolt solves critical challenges in industrial settings where reliability under dynamic loads is paramount. The external hex drive ensures compatibility with standard tools while the black finish provides basic corrosion resistance for indoor industrial environments.

Specification Summary & Compliance

This hex head screw features precise Class 6g thread fit tolerance per metric standards with M12 x 1.75 mm coarse thread configuration and right-hand threading. Manufactured to ISO 4014/DIN 931 specifications, ensuring dimensional accuracy and mechanical properties. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for use across various industrial sectors without regulatory concerns.