S-91280A992 M18 x 40 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 damage in industrial settings
- Exceptional tensile strength of 110,000 PSI ensures reliable performance under high-stress conditions
- Class 8.8 strength grade provides consistent mechanical properties for demanding applications
- Rockwell C21 hardness rating maintains structural integrity and prevents deformation during installation
- Coarse M18 x 2.5mm thread profile enables faster assembly and reduced cross-threading risks
- Fully threaded design offers maximum grip length and uniform load distribution
- External hex drive compatibility allows for standard tooling and simplified maintenance procedures
Professional Applications & Engineering Value
These M18 hex head screws deliver critical engineering solutions where vibration resistance and structural integrity are paramount. Manufactured from Class 8.8 steel with zinc plating, they address common industrial challenges including corrosion-induced failure and joint loosening. The coarse metric thread (2.5mm pitch) ensures rapid installation in construction equipment, machinery frames, and structural steel connections while maintaining Class 6h thread fit precision. Their fully threaded configuration provides consistent clamping force across the entire 40mm length, making them ideal for heavy-duty assembly applications requiring predictable load-bearing characteristics and long-term reliability in harsh operating environments.
Specification Summary & Compliance
This hex head screw features M18 x 2.5mm coarse threading with Class 6h thread tolerance and complies with ISO 4017 manufacturing standards (equivalent to DIN 933). The fastener meets international regulatory requirements including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) environmental standards. With right-hand thread direction and external hex drive configuration, it maintains dimensional accuracy per metric threading specifications while delivering verified mechanical properties including 110,000 PSI tensile strength and Rockwell C21 hardness.
