S-91280A020 M18 x 120 mm ISO 4014, DIN 931 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) ensures reliable performance in high-stress applications
- Superior corrosion resistance through zinc plating extends service life in demanding industrial environments
- Optimized coarse thread design (M18x2.5mm) provides faster installation and reduced cross-threading risk
- Precision external hex drive with 27mm head width enables secure tool engagement and high torque application
- Controlled partial threading allows for precise clamping force distribution across connected materials
- Consistent dimensional accuracy with Class 6h thread fit guarantees proper mating and vibration resistance
- Enhanced durability with Rockwell C21 hardness maintains fastener integrity under repeated loading
Professional Applications & Engineering Value
This M18 hex head screw delivers critical engineering solutions for heavy-duty industrial applications where failure is not an option. The Class 8.8 steel construction provides the necessary structural integrity for construction, machinery assembly, and infrastructure projects requiring high-strength fastening. The coarse metric thread (2.5mm pitch) ensures rapid installation in various materials while the zinc plated finish protects against environmental degradation. The partially threaded design concentrates clamping force precisely where needed, preventing joint loosening under vibration and dynamic loads. Engineered to ISO 4014/DIN 931 standards, this fastener delivers predictable performance and interchangeability across global projects.
Specification Summary & Compliance
This metric hex head screw features precise Class 6h thread fit tolerance and M18x2.5mm coarse threading with 42mm minimum thread length. Manufactured to ISO 4014/DIN 931 specifications with Class 8.8 strength rating (110,000 PSI tensile strength, Rockwell C21 hardness). The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.
