S-90379A108 M8 x 45 mm JIS B 1180 JIS Medium-Strength Steel Hex Head Screws
JIS Medium-Strength Steel Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional durability with Class 8.8 steel construction, providing reliable performance under high-stress conditions and a tensile strength of 110,000 psi.
- Superior corrosion resistance due to zinc yellow-chromate plating, extending service life in harsh industrial environments.
- Easy installation and removal with an external hex drive and 12mm head width, allowing for standard tool compatibility and efficient assembly.
- Precise thread engagement with M8 coarse thread (1.25mm pitch) and Class 6g fit, ensuring secure fastening and reducing the risk of cross-threading.
- Full threading along the 45mm length for maximum grip and versatility in various material thicknesses.
- High hardness rating of Rockwell C21, offering excellent wear resistance and maintaining integrity under repetitive loads.
- Compliance with JIS B 1180 standards, guaranteeing consistent quality and interchangeability for international engineering projects.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these M8 hex head screws deliver robust performance in machinery assembly, automotive frameworks, and structural applications. The Class 8.8 steel and fully threaded design ensure high clamp load retention, preventing loosening from vibrations. With a coarse metric thread and Class 6g fit, installation is swift and reliable, minimizing assembly errors. The zinc yellow-chromate plating combats oxidation in humid or corrosive environments, while adherence to JIS B 1180 specifications assures precision for global supply chains. Ideal for OEMs and maintenance teams seeking durable, standardized industrial fasteners.
Specification Summary & Compliance
This fastener features an M8 x 1.25mm coarse thread with Class 6g tolerance for precise fit, a 45mm fully threaded length, and external hex drive. It meets JIS B 1180 manufacturing standards and is constructed from Class 8.8 steel with a tensile strength of 110,000 psi and Rockwell C21 hardness. The zinc yellow-chromate finish provides enhanced corrosion protection, supporting compliance with industry requirements for reliable, high-strength connections.
