S-91280A896 M20 x 140 mm ISO 4014, DIN 931, SAE J1199, ISO 898 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 harsh industrial environments
- High tensile strength of 110,000 psi ensures reliable performance under heavy loads and vibrations
- Class 8.8 strength grade provides consistent mechanical properties for demanding applications
- Coarse 2.5mm thread pitch enables faster assembly and better resistance to loosening
- Partially threaded design offers optimal grip length while reducing weight and material usage
- External hex drive compatibility allows for standard tooling and straightforward installation
- Precision Class 6h thread fit guarantees secure fastening with minimal play
Professional Applications & Engineering Value
This M20 hex head screw delivers exceptional engineering value in heavy-duty applications where reliability is critical. The Class 8.8 steel construction combined with zinc plating provides both mechanical strength and corrosion protection, making it ideal for construction equipment, machinery frames, and structural assemblies. The coarse metric thread with 2.5mm pitch ensures rapid installation and maintains integrity in high-vibration environments. With partial threading and external hex drive, this fastener offers precise clamping force control while accommodating standard industrial tools, reducing assembly time and improving maintenance efficiency in manufacturing, infrastructure, and heavy equipment applications.
Specification Summary & Compliance
This M20 hex head screw features precise Class 6h thread fit according to ISO metric standards with a coarse 2.5mm pitch. Manufactured to meet ISO 4014, DIN 931, and SAE J1199 specifications, ensuring dimensional accuracy and mechanical performance. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, guaranteeing safe use across industrial sectors while maintaining the required 110,000 psi tensile strength and Rockwell C21 hardness for Class 8.8 fasteners.
