S-91280A567 M8 x 120 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, extending service life in demanding environments
• High tensile strength of 110,000 psi ensures reliable performance under heavy loads and vibration
• Class 8.8 strength grade provides dependable mechanical properties for structural and industrial applications
• Partially threaded design allows for secure clamping while reducing weight and material usage
• External hex drive and hex head enable easy installation and high torque application with standard tools
• Coarse M8 x 1.25 mm thread offers quick assembly and reduced cross-threading risks
• Compliance with ISO 4014, DIN 931, and SAE J1199 guarantees dimensional accuracy and interchangeability

Professional Applications & Engineering Value

This M8 hex head screw is engineered to address critical challenges in industrial assembly, where vibration resistance and long-term durability are paramount. The Class 8.8 steel construction, combined with a Rockwell C21 hardness, ensures the fastener maintains integrity under dynamic loads, preventing failure in machinery, structural frameworks, and automotive components. The zinc-plated finish provides a protective barrier against oxidation and chemical exposure, making it suitable for outdoor or humid environments. Its partially threaded and coarse thread design simplifies alignment and speeds up installation in high-volume production lines, reducing labor time while ensuring a secure fit. Ideal for heavy-duty applications, this screw meets rigorous ISO 4014 and DIN 931 specifications, delivering consistent performance in construction, manufacturing, and equipment maintenance.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including M8 x 1.25 mm coarse thread with a Class 6h thread fit for accurate engagement. It conforms to ISO 4014, DIN 931, and SAE J1199 manufacturing specifications, ensuring reliability across global applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible sourcing and usage in industrial sectors.