S-91280A984 M12 x 12 mm ISO 4017, DIN 933 Medium-Strength Metric Class 8.8 Steel Hex Head Screws
Medium-Strength Metric Class 8.8 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
- Superior corrosion resistance with zinc plating, extending service life in demanding industrial environments
- Exceptional tensile strength of 110,000 PSI (Class 8.8) ensures reliable performance under heavy loads
- Optimized torque transmission through external hex drive design for secure installation and removal
- Precision M12 coarse threading (1.75mm pitch) enables faster assembly and reduced cross-threading risks
- Full thread coverage along the 12mm length provides maximum grip and load distribution
- Consistent dimensional accuracy with Class 6h thread fit guarantees interchangeability and proper mating
- Comprehensive regulatory compliance meeting ISO 4017, RoHS 3, and REACH standards for global acceptance
Professional Applications & Engineering Value
These M12 hex head screws deliver critical performance advantages for heavy-duty industrial applications where vibration resistance and structural integrity are paramount. The Class 8.8 steel construction combined with Rockwell C21 hardness provides optimal strength-to-weight ratio, preventing shear failure in machinery, structural frames, and equipment assembly. The zinc plated finish actively protects against corrosion in humid or outdoor environments, while the coarse metric thread (1.75mm pitch) ensures rapid installation and superior resistance to loosening under dynamic loads. Engineered to ISO 4017 specifications (equivalent to DIN 933), these fully threaded fasteners offer consistent performance in automotive, construction, and manufacturing applications where precision and reliability cannot be compromised.
Specification Summary & Compliance
This metric hex head screw features M12 x 1.75mm coarse threading with Class 6h thread fit tolerance ensuring precise engagement. Manufactured to ISO 4017 specifications (DIN 933 equivalent) with Class 8.8 strength rating and Rockwell C21 hardness. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting international environmental and safety standards for industrial components.
