S-91052A121 M16 x 40 mm ISO 8676, DIN 961 High-Strength Metric Class 10.9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional Load-Bearing Capacity: Class 10.9 high-strength steel construction ensures reliable performance under high stress, with a tensile strength of 150,000 PSI for secure, long-lasting connections.
• Superior Corrosion Resistance: Zinc yellow-chromate plating provides excellent protection against rust and environmental degradation, extending service life in harsh industrial settings.
• Precision Fine Thread Design: M16 x 1.5 mm fine thread pitch offers enhanced clamping force and vibration resistance compared to coarse threads, reducing the risk of loosening.
• Optimized for High-Torque Applications: External hex drive and 24 mm head width allow for easy installation with standard tools, ensuring efficient assembly and maintenance.
• Consistent Quality and Fit: Class 6h thread fit and full threading guarantee uniform engagement and reliable fastening across multiple applications.
• Certified Industrial Reliability: Compliance with ISO 8676 and DIN 961 standards ensures consistent dimensions, mechanical properties, and interoperability in global projects.
• Durable Material Hardness: Rockwell C32 hardness provides optimal balance between strength and ductility, resisting wear and deformation under repeated use.

Professional Applications & Engineering Value

This M16 hex head screw is engineered to address critical fastening challenges in demanding industrial applications, such as heavy machinery, structural assemblies, and automotive systems. The Class 10.9 high-strength steel and fine thread with 1.5 mm pitch deliver superior vibration resistance and clamping force, preventing joint failure in dynamic environments. The zinc yellow-chromate finish enhances corrosion protection, making it suitable for outdoor or humid conditions where durability is paramount. Fully threaded for maximum grip length, it ensures even stress distribution and reduces the need for frequent retightening. By meeting ISO 8676 DIN 961 specifications, this screw provides reliable performance in precision engineering projects, minimizing downtime and maintenance costs.

Specification Summary & Compliance

This product features a metric M16 thread with 1.5 mm fine pitch and Class 6h thread fit tolerance for precise alignment. It is manufactured from high-strength steel with a tensile strength of 150,000 PSI and hardness of Rockwell C32. The zinc yellow-chromate plating offers corrosion resistance, while the external hex drive and fully threaded design ensure easy installation. Compliance with ISO 8676 and DIN 961 standards guarantees consistent quality, dimensional accuracy, and adherence to international industrial fastening specifications.