S-91180A915 M18 x 30 mm ISO 8676, DIN 961 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
- Exceptional tensile strength with Class 8.8 rating and 110,000 psi capacity for reliable performance in demanding applications
- Superior corrosion resistance through zinc plating, extending service life in harsh industrial environments
- Precise thread engagement with Class 6h fit and fine 1.5mm pitch ensuring secure fastening and vibration resistance
- Optimized torque transmission via external hex drive and 27mm head width for easy installation with standard tools
- Consistent mechanical properties with Rockwell C21 hardness maintaining structural integrity under load
- Full thread coverage along the 30mm length providing maximum grip and load distribution
- Regulatory compliance assurance meeting international standards for safety and environmental responsibility
Professional Applications & Engineering Value
This M18 hex head screw delivers critical engineering solutions for industrial assembly challenges where vibration resistance and structural integrity are paramount. The Class 8.8 steel construction combined with zinc plating provides durable protection against corrosion in manufacturing equipment, machinery frames, and structural steel connections. The fine thread spacing (1.5mm pitch) and Class 6h thread fit ensure precise alignment and secure fastening in high-stress applications, preventing loosening under dynamic loads. With fully threaded design and external hex drive, installation efficiency is maximized while maintaining consistent clamping force across the entire 30mm length, making it ideal for heavy-duty industrial fastening where reliability cannot be compromised.
Specification Summary & Compliance
This metric fastener features M18 x 1.5mm fine threads with Class 6h tolerance and Class 8.8 strength rating. Manufactured to ISO 8676 specifications (where identical to DIN 961), it ensures dimensional accuracy and performance consistency. The screw is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest standards for hazardous substance restrictions and chemical safety in industrial components.
