S-90447A210 M8 x 140 mm DIN 931 High-Strength Metric Class 10.9 Steel Hex Head Screws
High-Strength Metric Class 10.9 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 load-bearing capability with Class 10.9 strength rating and 150,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance and durability thanks to steel construction with Rockwell C32 hardness for extended service life
- Secure installation and removal with external hex drive and 13mm head width providing excellent torque transmission
- Optimized thread engagement with Class 6g thread fit ensuring precise mating with nuts and threaded components
- Versatile partial threading design allowing both clamping and alignment functions in structural assemblies
- Industry-standard compatibility with M8 coarse thread (1.25mm pitch) meeting DIN 931 specifications for interchangeability
- Environmental compliance assurance with RoHS 3 and REACH compliance for global manufacturing applications
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these M8 hex head screws deliver critical performance where structural integrity matters most. The Class 10.9 steel construction provides exceptional resistance to vibration loosening and fatigue failure in machinery, construction, and automotive assemblies. The partially threaded design combines the clamping force of threaded sections with the smooth shank's alignment capabilities, solving common challenges in bolted connections requiring both precision positioning and secure fastening. With coarse metric threading and external hex drive, these fasteners enable quick installation in high-volume production environments while maintaining the reliability demanded by engineering specifications. The DIN 931 compliance ensures consistent performance across international projects requiring standardized metric fasteners.
Specification Summary & Compliance
This M8 x 1.25 x 140mm hex head screw features Class 6g thread fit tolerance for precise engagement and 22mm minimum thread length for sufficient clamping surface. Manufactured to DIN 931 specifications with right-hand coarse threading (1.25mm pitch). Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications requiring restricted substance control.
