S-91280A028 M18 x 65 mm ISO 8765, DIN 960 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 for extended service life in demanding industrial environments
- High tensile strength of 110,000 PSI ensures reliable performance under heavy loads and vibration
- Precise Class 6h thread fit provides smooth assembly and secure fastening in metric applications
- External hex drive design enables efficient installation with standard tools while resisting stripping
- Class 8.8 strength rating delivers consistent mechanical properties for critical structural applications
- Fine thread spacing (1.5mm pitch) offers improved adjustment precision and vibration resistance
- Partial threading configuration provides optimal grip length while reducing material usage
Professional Applications & Engineering Value
This M18 hex head screw with Class 8.8 strength grade and zinc plated finish addresses critical engineering challenges in industrial assembly. The metric fine thread (1.5mm pitch) ensures superior vibration resistance in machinery, automotive, and structural applications where loosening under dynamic loads is a concern. The steel construction with Rockwell C21 hardness provides the ideal balance between strength and ductility, preventing brittle failure while maintaining 110,000 PSI tensile strength. The external hex drive design allows for high torque application without cam-out, making it suitable for automated assembly systems and maintenance operations where reliability is paramount.
Specification Summary & Compliance
Manufactured to ISO 8765 specifications with Class 6h thread fit tolerance ensuring dimensional accuracy and interchangeability. The metric thread system features M18x1.5 fine pitch with right-hand threading and 42mm minimum thread length. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making these screws suitable for global industrial applications requiring strict chemical substance control.
