S-90358A147 M8 x 18 mm Alloy Steel Ultra-Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional strength and durability with 140,000 psi tensile strength and Rockwell C32 hardness, ensuring reliable performance under high-stress conditions.
• Precise and secure fastening thanks to Class 5g6g thread fit, providing consistent engagement and reducing the risk of loosening in demanding applications.
• Corrosion-resistant black-oxide finish on alloy steel enhances longevity and protects against environmental factors in industrial settings.
• Ultra-low socket head profile with 5 mm hex drive allows for installation in confined spaces while maintaining high torque capability.
• Coarse 1.25 mm pitch threads enable quick assembly and disassembly, improving efficiency in maintenance and production workflows.
• Fully threaded design ensures uniform load distribution and maximum grip length for enhanced joint integrity.
• Compliance with RoHS 3 and REACH standards guarantees environmental safety and regulatory adherence for global industrial use.

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these M8 socket head cap screws in black-oxide alloy steel deliver superior resistance to wear and corrosion, addressing common issues like fastener failure in machinery and equipment. The Class 5g6g thread with a coarse 1.25 mm pitch ensures rapid installation and reliable holding power, minimizing downtime in assembly lines. Ideal for applications in automotive, aerospace, and heavy machinery, the ultra-low head profile and 5 mm hex drive facilitate access in tight spaces, while the high tensile strength supports critical structural connections. This combination of precision and durability makes them a trusted choice for engineers seeking long-term performance and compliance with industry standards.

Specification Summary & Compliance

This product adheres to metric thread standards with a precise Class 5g6g thread fit and length tolerance of -0.127mm to 0.127mm for consistent dimensional accuracy. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for various industrial applications. The specifications confirm full conformance with common engineering requirements for strength and safety.