S-91180A725 M12 x 45 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 for extended service life in demanding environments
• Exceptional tensile strength of 110,000 psi ensures reliable performance in heavy-duty applications
• Precise Class 6h thread fit provides secure, vibration-resistant connections with minimal play
• Extra fine pitch threading (M12x1.25) enables finer adjustment and superior clamping force distribution
• Class 8.8 strength rating guarantees consistent mechanical properties and load-bearing capacity
• Rockwell C21 hardness maintains thread integrity and prevents stripping during installation
• Full threading along 45mm length offers maximum engagement flexibility and uniform stress distribution

Professional Applications & Engineering Value

Engineered for precision industrial applications where reliable fastening performance is critical, these M12 hex head screws solve common engineering challenges in machinery assembly, structural frameworks, and equipment manufacturing. The Class 8.8 steel construction combined with extra fine pitch metric threading provides superior resistance to vibration loosening and maintains clamping force under dynamic loads. The zinc plated finish effectively combats corrosion in industrial environments, while the external hex drive design ensures easy installation with standard tools. These fully threaded metric fasteners are particularly valuable in applications requiring precise adjustment and uniform load distribution across the entire 45mm length, making them ideal for critical joints in automotive, construction, and manufacturing equipment where failure is not an option.

Specification Summary & Compliance

This M12x1.25x45mm hex head screw features Class 6h thread tolerance for precision fit and complies with ISO 8676 DIN 961 manufacturing specifications. The fastener meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) standards for chemical safety. With right-hand metric threading and extra fine pitch spacing, these screws maintain dimensional accuracy per international metric standards while delivering consistent Class 8.8 mechanical properties throughout their service life.