S-91239A233 M5 x 20 mm ISO 7380 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Class 10.9 strength grade and 140,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance thanks to the black-oxide coating on alloy steel, extending service life in harsh industrial environments
• Optimized installation efficiency with hex drive design and fully threaded M5 coarse pitch for quick, secure fastening with standard tools
• Consistent dimensional accuracy maintained through ISO 7380 certification and Class 6g thread fit for precise, vibration-resistant connections
• Enhanced durability from Rockwell C32 hardness, resisting wear and deformation under repeated stress cycles
• Broad regulatory compliance with RoHS 3 and REACH standards, ensuring safe use across global markets
• Space-saving rounded button head profile providing a low-profile finish while maintaining high torque capability

Professional Applications & Engineering Value

Engineered for high-stress industrial applications, these M5 button head screws deliver critical performance where vibration resistance and structural integrity are paramount. The black-oxide alloy steel construction combined with Class 10.9 strength prevents fastener failure in machinery, automotive assemblies, and heavy equipment. The fully threaded metric coarse pitch design ensures maximum grip length and prevents loosening under dynamic loads, while the hex drive accommodates high torque installation without stripping. ISO 7380 certification guarantees interchangeability and consistent quality in production environments, making these industrial fasteners ideal for OEM and MRO applications requiring reliable, long-term fastening solutions.

Specification Summary & Compliance

This metric fastener features M5 x 0.8mm coarse threads with Class 6g thread fit tolerance per ISO standards, ensuring precise engagement. Manufacturing complies with ISO 7380 specifications for dimensional consistency and mechanical properties. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming suitability for international industrial supply chains. Alloy steel composition and heat treatment achieve Rockwell C32 hardness and 140,000 psi tensile strength as specified for Class 10.9 strength grade fasteners.