S-90379A101 M8 x 12 mm JIS B 1180 JIS Medium-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Enhanced Durability: Zinc yellow-chromate plating provides superior corrosion resistance, extending service life in harsh industrial environments.
• High Tensile Strength: Class 8.8 grade and 110,000 psi tensile strength ensure reliable performance under heavy loads and stress.
• Secure Fastening: Fully threaded M8 coarse pitch (1.25mm) design offers excellent grip and vibration resistance in various materials.
• Precision Fit: Class 6g thread fit guarantees consistent, accurate installation with standard metric nuts and components.
• Easy Installation & Removal: External hex head (12mm width) allows for quick, tool-friendly assembly and disassembly with common wrenches.
• Industry Compliance: Meets JIS B 1180 specifications, ensuring quality and compatibility in regulated applications.
• Robust Material: Steel construction with Rockwell C21 hardness provides excellent wear resistance and long-term reliability.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these M8 hex head screws deliver critical performance where high tensile strength and corrosion resistance are paramount. The steel material combined with Class 8.8 strength grade ensures dependable fastening in machinery, structural assemblies, and equipment subjected to dynamic loads. The zinc yellow-chromate finish effectively prevents rust and degradation in humid or chemically exposed environments, reducing maintenance needs. With a fully threaded coarse pitch design and external hex drive, installation is swift and secure, minimizing assembly time while providing consistent clamping force. Ideal for automotive, construction, and manufacturing sectors requiring JIS B 1180 compliance and reliable metric coarse thread performance.

Specification Summary & Compliance

This M8 x 1.25mm hex head screw features a Class 6g thread fit per metric standards, ensuring precise dimensional accuracy. Manufactured to meet JIS B 1180 specifications, it guarantees consistent quality and interchangeability. The fastener maintains Class 8.8 strength rating with verified 110,000 psi tensile strength and Rockwell C21 hardness. The zinc yellow-chromate plating provides environmental protection while complying with industry surface treatment requirements. Fully threaded design and right-hand thread direction offer universal compatibility for professional and industrial use.