S-91180A534 M8 x 25 mm ISO 8676, DIN 961 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional Load-Bearing Capability - Class 8.8 strength grade and 110,000 psi tensile strength ensure reliable performance under high-stress industrial applications.
• Superior Corrosion Resistance - Zinc plating provides durable protection against rust and environmental degradation, extending service life in harsh conditions.
• Precision Thread Engagement - Fine M8x1 mm thread with Class 6h fit offers secure, vibration-resistant fastening and minimizes loosening risks.
• Optimized Torque Transmission - External hex drive and 13 mm head width enable efficient installation with standard tools, reducing assembly time.
• Full Thread Coverage - 25 mm fully threaded design ensures maximum grip length and uniform stress distribution across connected materials.
• Hardened Material Integrity - Steel construction with Rockwell C21 hardness balances toughness and machinability for repeated use without deformation.
• Global Compliance Assurance - Meets ISO 8676 DIN 961 manufacturing standards, RoHS 3, and REACH regulations for safe, internationally accepted usage.

Professional Applications & Engineering Value

Engineered for demanding industrial fastening scenarios, these M8 hex head screws address critical challenges in machinery assembly, structural frameworks, and heavy-duty equipment. The Class 8.8 steel core delivers consistent 110,000 psi tensile strength, preventing shear failures under dynamic loads. Combined with fine metric threading (M8x1 mm) and zinc plating, the screws maintain clamp force integrity in high-vibration environments like automotive subsystems or conveyor systems. The fully threaded 25 mm length allows adjustable engagement depth, simplifying alignment in multi-layer assemblies while the external hex drive ensures compatibility with automated installation tools, boosting production efficiency.

Specification Summary & Compliance

This metric hex screw adheres to precise dimensional tolerances per ISO 8676 DIN 961, including Class 6h thread fit for consistent interchangeability. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring absence of restricted hazardous substances. The right-hand thread design follows standardized fine thread spacing specifications, guaranteeing reliable performance in industrial fastener applications requiring repeatable torque accuracy.