S-91180A917 M18 x 50 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
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional tensile strength with Class 8.8 rating (110,000 psi) for reliable performance in demanding applications
- Superior corrosion resistance provided by zinc plating, extending service life in harsh industrial environments
- Precision fine threading (1.5mm pitch) with Class 6h fit ensures secure fastening and vibration resistance
- Optimized mechanical properties with Rockwell C21 hardness for consistent durability under heavy loads
- Full threading design allows maximum engagement and uniform stress distribution along the entire 50mm length
- Standard-compliant manufacturing meeting ISO 8676 (DIN 961) ensures dimensional accuracy and interchangeability
- External hex drive design enables high-torque installation with standard tools for efficient assembly
Professional Applications & Engineering Value
This M18 hex head screw delivers critical engineering solutions for industrial applications requiring high tensile strength and reliable fastening performance. The Class 8.8 steel construction with Rockwell C21 hardness provides optimal resistance to shear forces and mechanical stress, making it ideal for heavy machinery, structural assemblies, and equipment manufacturing. The zinc plated finish offers essential corrosion protection in environments exposed to moisture and chemicals, while the fine metric threading (1.5mm pitch) ensures precise engagement and vibration resistance in dynamic applications. The fully threaded design maximizes load distribution across the entire 50mm length, preventing stress concentration and maintaining joint integrity in critical connections.
Specification Summary & Compliance
This metric hex head screw features M18 x 1.5mm fine thread spacing with Class 6h thread fit tolerance for precision assembly. Manufactured to ISO 8676 (equivalent to DIN 961) standards, ensuring dimensional accuracy and mechanical properties. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for various industrial sectors requiring regulatory adherence.
