S-98093A779 M12 x 90 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 Class 10.9 strength grade (150,000 PSI tensile strength) for reliable performance in high-stress applications
• Superior corrosion resistance through black-phosphate steel coating that extends service life in demanding industrial environments
• Enhanced stability and load distribution thanks to the integrated flange design that eliminates the need for separate washers
• Optimized installation efficiency with external hex drive and coarse threading (M12 x 1.75mm) for faster assembly in time-sensitive operations
• Precision thread engagement with Class 6g thread fit ensuring consistent performance and reduced risk of cross-threading
• Versatile partial threading providing both secure fastening and clearance where needed in complex assemblies
• Regulatory compliance assurance meeting ASME B18.2.3.9M standards and environmental regulations for global project specifications

Professional Applications & Engineering Value

This M12 hex head screw delivers critical engineering solutions for industrial applications requiring reliable fastening under substantial mechanical stress. The black-phosphate steel construction provides superior corrosion protection in harsh environments, while the flanged design distributes clamping force evenly, preventing surface damage and reducing assembly components. With Class 10.9 strength grade and Rockwell C32 hardness, this metric screw maintains integrity in heavy machinery, structural frameworks, and automotive assemblies where vibration resistance is paramount. The coarse thread pattern (1.75mm pitch) ensures rapid installation in production lines, and the partial threading allows for precise clamping control in layered materials. Engineered to ASME B18.2.3.9M specifications, this flanged hex bolt addresses common industrial challenges of joint failure, corrosion-induced degradation, and assembly inefficiency.

Specification Summary & Compliance

This M12 hex head screw features precise Class 6g thread fit tolerance with metric coarse threading (1.75mm pitch) and 30mm minimum thread length. Manufactured to ASME B18.2.3.9M mechanical standards with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The 90mm length and 26.6mm flange diameter provide consistent dimensional accuracy for industrial applications requiring standardized component integration.