S-98093A548 M8 x 30 mm ASME B18.2.3.9M, SAE J1199 High-Strength Metric Class 10.9 Steel Flanged Hex Head Screws
High-Strength Metric Class 10.9 Steel Flanged 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 load-bearing capacity with Class 10.9 strength rating and 150,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance through black-phosphate steel coating that protects against rust and extends service life
- Optimized torque transmission with external hex drive design providing secure tool engagement and preventing stripping
- Enhanced stability and distribution from the integrated flange that eliminates the need for separate washers
- Quick installation efficiency with coarse M8x1.25mm threading that reduces assembly time and prevents cross-threading
- Consistent dimensional accuracy maintained through Class 6g thread fit tolerance for precise mating with nuts
- Complete thread coverage along the 30mm length ensures maximum grip strength throughout the fastened joint
Professional Applications & Engineering Value
These M8 hex head screws deliver critical engineering solutions where high-strength fastening meets corrosion challenges. The black-phosphate steel construction provides essential protection against environmental degradation in industrial settings, while the Class 10.9 rating ensures structural integrity under dynamic loads. The flanged design eliminates washer requirements, streamlining assembly in automotive chassis, heavy machinery, and structural frameworks. With fully threaded coarse pitch configuration, these metric screws offer rapid installation and vibration resistance, making them ideal for production lines where reliability and efficiency are paramount. The combination of Rockwell C32 hardness and precise Class 6g thread fit guarantees consistent performance in critical joints.
Specification Summary & Compliance
Manufactured to exact ASME B18.2.3.9M specifications with Class 6g thread tolerance for dimensional precision. These M8x1.25mm coarse thread screws feature 30mm length and 18mm flange diameter with fully threaded design. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial applications while meeting international quality standards for industrial fasteners.
