S-91180A711 M12 x 20 mm ISO 8676, DIN 961 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating, extending service life in harsh industrial environments
• High tensile strength of 110,000 psi ensures reliable performance under heavy loads and vibrations
• Class 8.8 strength grade provides excellent durability for demanding mechanical applications
• Extra fine 1.25 mm pitch threading offers superior grip and vibration resistance in precision assemblies
• Class 6h thread fit guarantees precise mating with nuts and threaded components
• External hex drive design enables easy installation and removal with standard tools
• Full threading along 20mm length maximizes engagement area for stronger connections

Professional Applications & Engineering Value

This M12 hex head screw delivers exceptional engineering value through its Class 8.8 steel construction and zinc plated finish, specifically designed to address common industrial challenges. The extra fine metric thread with 1.25 mm pitch provides superior resistance to loosening under vibration, making it ideal for precision machinery, automotive assemblies, and heavy equipment where maintaining clamp load is critical. The fully threaded design ensures maximum thread engagement in both thick and thin materials, while the external hex drive allows for high torque application without stripping. Engineered to ISO 8676 DIN 961 standards, this fastener maintains dimensional accuracy and performance consistency across production runs, reducing assembly time and improving reliability in industrial applications.

Specification Summary & Compliance

This metric fastener features Class 6h thread fit tolerance and M12x1.25 extra fine threading with right-hand direction. Manufactured to ISO 8676 DIN 961 specifications, it ensures precise dimensional accuracy and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances. The Class 8.8 strength rating corresponds to 110,000 psi tensile strength and Rockwell C21 hardness, meeting international standards for mechanical fasteners in industrial applications.