S-91280A997 M18 x 80 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 that protects against environmental degradation in demanding industrial settings
- Exceptional tensile strength of 110,000 psi ensures reliable performance under heavy loads and high-stress applications
- High durability with Rockwell C21 hardness that maintains fastener integrity through repeated use and vibration
- Easy installation and removal with external hex head design providing secure tool engagement and efficient assembly
- Precise thread engagement with Class 6h fit and coarse thread spacing that prevents cross-threading and ensures consistent clamping force
- Full thread coverage along the 80mm length maximizes grip range and distribution of load across connected materials
- Compliance with international standards including ISO 4017/DIN 933 guarantees interchangeability and quality consistency
Professional Applications & Engineering Value
These M18 hex head screws deliver critical performance in heavy-duty industrial applications where failure is not an option. The Class 8.8 strength grade combined with steel construction provides the structural integrity needed for construction frameworks, machinery assembly, and infrastructure projects. The coarse metric thread with 2.5mm pitch offers superior resistance to vibration loosening, while the zinc plating creates a protective barrier against corrosion in harsh environments. The fully threaded design ensures maximum contact surface for enhanced load distribution, making these industrial fasteners ideal for applications requiring uniform clamping force across the entire fastener length.
Specification Summary & Compliance
Manufactured to precise ISO 4017/DIN 933 standards with Class 6h thread fit tolerance ensuring consistent performance and interchangeability. These metric hex head screws feature M18 x 2.5mm coarse threads with right-hand orientation and 80mm fully threaded length. The fasteners are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest industry requirements for hazardous substance restrictions.
