S-90180A677 M20 x 120 mm ISO 4014, DIN 931 High-Strength Metric Class 10.9 Steel 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 demanding applications
• Superior corrosion resistance provided by blue-dyed zinc plating, extending service life in harsh industrial environments
• Optimized torque transmission through external hex drive design and 30mm head width for secure installation and removal
• Enhanced mechanical stability with Rockwell C32 hardness maintaining structural integrity under heavy loads
• Precision thread engagement with Class 6g fit and M20x2.5 coarse thread pattern for quick assembly and vibration resistance
• Strategic material distribution through partial threading design that concentrates strength where needed most
• Global compliance assurance meeting ISO 4014/DIN 931 standards plus RoHS 3 and REACH environmental regulations

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these M20 hex head screws deliver critical performance where structural integrity matters most. The Class 10.9 steel construction provides exceptional shear and tensile strength for machinery assembly, structural steel connections, and heavy equipment manufacturing. The blue-dyed zinc plating offers superior corrosion protection in challenging environments while maintaining electrical conductivity. With partial threading and coarse metric thread pitch, these fasteners provide optimal clamping force distribution and resistance to vibrational loosening in construction, automotive, and industrial machinery applications. The external hex drive ensures compatibility with standard tools while the 120mm length accommodates thick material sections commonly found in industrial frameworks and heavy steel structures.

Specification Summary & Compliance

This metric hex head screw features precise M20x2.5 coarse threading with Class 6g thread fit tolerance ensuring proper engagement in industrial applications. Manufactured to ISO 4014/DIN 931 specifications with partial threading extending 46mm from the tip. The fastener demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial markets. The combination of Class 10.9 strength rating, Rockwell C32 hardness, and standardized dimensions guarantees consistent performance across batch productions and replacement scenarios.