S-91280A187 M12 x 190 mm ISO 4014, DIN 931 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Class 8.8 strength rating and 110,000 PSI tensile strength for reliable performance in high-stress industrial environments.
• Superior corrosion resistance through zinc plating, extending service life and reducing maintenance in harsh or outdoor applications.
• Optimized fastening efficiency with a coarse 1.75mm thread pitch and external hex drive, enabling quick installation and high torque application.
• Secure partial threading (minimum 36mm thread length) ensures precise grip and vibration resistance in assembled components.
• Rigorous dimensional accuracy with Class 6h thread fit and compliance to DIN 931/ISO 4014, guaranteeing interchangeability and consistent performance.
• Enhanced durability from Rockwell C21 hardened steel, resisting wear and deformation under repeated use.
• Environmental and regulatory compliance with RoHS 3 and REACH, making it suitable for global supply chains and sensitive applications.

Professional Applications & Engineering Value

This M12 hex head screw is engineered to address critical fastening challenges in industrial machinery, structural frameworks, and heavy equipment assembly. The Class 8.8 steel construction provides high tensile strength to withstand dynamic loads and vibrations, reducing the risk of joint failure. Its partially threaded design allows for controlled clamping force, minimizing stress concentration on threads while the coarse metric thread ensures rapid installation in coarse-alignment applications. The zinc-plated finish offers a protective barrier against oxidation and chemical exposure, ideal for outdoor or humid environments. Compliant with ISO 4014 and DIN 931 standards, this external hex drive screw delivers reliable performance in automotive, construction, and manufacturing sectors where precision and durability are paramount.

Specification Summary & Compliance

This fastener adheres to ISO 4014 and DIN 931 specifications, with precise Class 6h thread fit ensuring dimensional accuracy and compatibility. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for environmental safety, and is manufactured to Class 8.8 strength grade with a tensile strength of 110,000 PSI and Rockwell C21 hardness for consistent mechanical performance.