S-91239A438 M8 x 35 mm ISO 7380 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional durability with Class 10.9 high-strength rating and 140,000 psi tensile strength for reliable performance in demanding applications.
• Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in harsh industrial environments.
• Secure and efficient installation with 5mm hex drive and fully threaded M8 coarse pitch design, preventing stripping and ensuring consistent clamping force.
• Optimized head design featuring a rounded button profile that reduces surface protrusion while maintaining high torque capability.
• Precision manufacturing with Class 6g thread fit and Rockwell C32 hardness for consistent quality and reduced assembly issues.
• Global compliance assurance meeting ISO 7380 standards and environmental regulations including RoHS 3 and REACH for international projects.
• Versatile industrial application due to metric coarse threading and robust construction suitable for machinery, equipment, and structural assemblies.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Class 10.9 black-oxide alloy steel screws address critical challenges in machinery assembly and structural fastening. The fully threaded M8 x 1.25mm coarse pitch design ensures maximum thread engagement and vibration resistance, preventing loosening under dynamic loads. With 140,000 psi tensile strength and Rockwell C32 hardness, they provide reliable performance in high-stress environments where fastener failure is not an option. The black-oxide surface treatment offers enhanced corrosion protection without compromising dimensional accuracy, while the 5mm hex drive and rounded button head facilitate quick installation in confined spaces. Ideal for automotive, manufacturing, and construction sectors requiring ISO 7380 compliant metric fasteners that combine strength with environmental compliance.

Specification Summary & Compliance

This M8 x 1.25mm x 35mm fully threaded screw maintains Class 6g thread tolerance per metric standards with coarse pitch threading for rapid assembly. Manufactured to ISO 7380 specifications with Class 10.9 strength grade, it ensures consistent mechanical properties across production batches. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental safety for global supply chains, while the black-oxide alloy steel construction provides reliable performance within specified hardness and tensile parameters.