S-91280A552 M8 x 65 mm ISO 4014, DIN 931, SAE J1199, ISO 898 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
• High tensile strength (110,000 PSI) and Class 8.8 rating for reliable performance in heavy-duty applications
• Precision metric coarse threading (M8 x 1.25mm) ensures quick assembly and secure fastening
• Rockwell C21 hardness provides excellent durability and resistance to wear
• External hex head design allows for easy installation with standard tools
• Partial threading offers optimal grip and clamping force for various material thicknesses
• Comprehensive compliance with international standards including ISO 4014, DIN 931, and SAE J1199

Professional Applications & Engineering Value

These M8 hex head screws deliver exceptional engineering value in industrial settings where vibration resistance and structural integrity are critical. The Class 8.8 steel construction combined with zinc plating creates a robust fastener capable of withstanding harsh environmental conditions while maintaining clamping force. The metric coarse thread (M8 x 1.25mm) design facilitates rapid installation in production environments, reducing assembly time. Particularly valuable in machinery assembly, structural frameworks, and equipment manufacturing, these partially threaded screws provide superior performance in applications requiring precise tension control and reliable fastening under dynamic loads.

Specification Summary & Compliance

Manufactured to precise Class 6h thread fit tolerances with 65mm length and 22mm minimum thread length. Complies with ISO 4014, DIN 931, and SAE J1199 standards for dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements, ensuring safe use across various industrial sectors.