S-98093A543 M8 x 25 mm ASME B18.2.3.9M, SAE J1199 High-Strength Metric Class 10.9 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 150,000 psi tensile strength and Class 10.9 rating for reliable performance in high-stress applications
• Superior corrosion resistance thanks to the black-phosphate steel coating, extending service life in harsh industrial environments
• Precise thread engagement with Class 6g fit and M8x1.25mm coarse thread ensuring secure fastening and vibration resistance
• Enhanced installation efficiency through the external hex drive and flanged design that eliminates need for separate washers
• Optimized material hardness at Rockwell C32 provides excellent wear resistance while maintaining ductility
• Full threading along the 25mm length offers maximum grip range and flexibility in various material thicknesses
• Regulatory compliance assurance with ASME B18.2.3.9M, RoHS 3, and REACH standards for global market acceptance

Professional Applications & Engineering Value

These M8 hex head screws deliver critical engineering solutions where high tensile strength and corrosion protection are paramount. The black-phosphate steel construction provides superior resistance to environmental degradation, making these Class 10.9 metric screws ideal for automotive assemblies, heavy machinery, and structural applications exposed to moisture and chemicals. The fully threaded design with coarse pitch ensures rapid installation and maximum thread engagement in various materials, while the flanged configuration distributes clamping force effectively, preventing surface damage. Engineered to ASME B18.2.3.9M specifications, these industrial hex screws maintain dimensional consistency for reliable performance in critical heavy-duty fastening applications where failure is not an option.

Specification Summary & Compliance

This M8 x 1.25mm hex head screw features Class 6g thread fit tolerance and complies with ASME B18.2.3.9M manufacturing standards. The fastener meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring environmental responsibility. With dimensions including 25mm length, 13mm head width, and 18mm flange diameter, these screws maintain precise metric coarse thread specifications for consistent performance across industrial applications.