S-98498A117 M39 ASTM A194 Hex Nuts
Hex Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior load distribution with an extra wide 65mm profile for enhanced stability in heavy machinery assemblies
- High tensile strength from ASTM Grade 2H steel construction, ensuring reliable performance under extreme mechanical stress
- Quick installation efficiency with coarse 4mm pitch metric threading, reducing assembly time in industrial settings
- Precise thread engagement with Class 6H fit, minimizing the risk of cross-threading and vibration-induced loosening
- Durable external hex drive design allows for high-torque application using standard tools, preventing rounding under heavy use
- Compliance with ASTM A194 standards guarantees material quality and manufacturing consistency for critical applications
- Environmental responsibility through RoHS 3 and REACH SVHC compliance, meeting global regulatory requirements
Professional Applications & Engineering Value
This M39 extra wide hex nut is engineered to address common failure points in heavy-duty industrial applications such as construction equipment, mining machinery, and structural steel connections. The ASTM Grade 2H steel composition provides exceptional resistance to vibrational loosening and fatigue, while the 65mm wide hex profile distributes clamping force over a larger surface area, preventing joint deformation under extreme loads. The coarse metric threading (4mm pitch) ensures rapid installation and removal in field maintenance scenarios, and the Class 6H thread fit maintains precise tolerances for secure fastening in high-vibration environments. This combination of material strength and dimensional optimization makes it ideal for applications where reliability and safety are paramount.
Specification Summary & Compliance
This metric hex nut features M39x4mm coarse right-hand threading with Class 6H thread fit per ISO standards, manufactured from steel meeting ASTM A194 specifications. The fastener complies with ASTM Grade 2H strength requirements and demonstrates full conformity with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Dimensions include 65mm width across flats and 39mm height, ensuring compatibility with standard metric wrench sizes.
