S-91280A370 M10 x 25 mm ISO 8676, DIN 961 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior tensile strength of 110,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure
• Class 8.8 strength grade provides excellent durability and load-bearing capacity for heavy-duty industrial use
• Fine 1.25mm pitch threading with Class 6g fit offers precise engagement and superior vibration resistance in critical assemblies
• Rockwell C21 hardness maintains structural integrity under stress, extending service life in harsh environments
• Fully threaded design allows for maximum grip length and uniform stress distribution across the entire fastener
• External hex drive enables easy installation with standard tools while providing secure torque transmission
• Comprehensive compliance with ISO 8676 DIN 961 ensures dimensional accuracy and international interchangeability

Professional Applications & Engineering Value

These M10 hex head screws deliver exceptional engineering value in industrial settings where vibration resistance and structural integrity are paramount. The Class 8.8 steel construction combined with fine metric threading (1.25mm pitch) creates a secure fastening solution that maintains clamp load under dynamic conditions. The fully threaded design ensures maximum engagement in tapped holes or with nuts, providing uniform stress distribution that prevents localized failure points. Particularly valuable in machinery assembly, automotive components, and structural frameworks, these black steel fasteners with external hex drive offer reliable performance where standard coarse-thread fasteners might loosen under vibration or thermal cycling. The precise Class 6g thread fit guarantees consistent engagement while the Rockwell C21 hardness provides the optimal balance between strength and ductility for demanding applications.

Specification Summary & Compliance

This M10 x 1.25mm hex head screw features precise Class 6g thread fit tolerance per metric standards with 25mm length and fully threaded configuration. Manufactured to ISO 8676 DIN 961 specifications for dimensional accuracy and performance consistency. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.