S-98498A140 M42 ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Superior load distribution thanks to the extra wide 70mm profile, reducing surface pressure and preventing material deformation in heavy machinery.
• Exceptional vibration resistance ensured by the fine 3mm pitch metric thread, maintaining joint integrity in high-stress, dynamic environments.
• Guaranteed high-strength performance with ASTM Grade 2H certification, providing reliable clamping force for critical industrial assemblies.
• Precise and secure fit with Class 6H thread tolerance, minimizing the risk of cross-threading and ensuring consistent installation quality.
• Long-term corrosion resistance and material reliability from high-grade steel construction compliant with ASTM A194 specifications.
• Safe for global industrial use with full compliance to RoHS 3 and REACH environmental regulations, ensuring no hazardous substances are present.
• Easy installation and removal with a standard external hex drive, compatible with common wrenching tools for efficient maintenance.

Professional Applications & Engineering Value

This M42 extra wide hex nut is engineered to solve critical challenges in heavy-duty industrial applications such as construction machinery, mining equipment, and large-scale structural frameworks. Its ASTM Grade 2H steel construction and fine metric threading (3mm pitch) provide exceptional resistance to loosening under extreme vibrational loads, a common failure point in dynamic systems. The extra wide hex profile (70mm) offers a larger wrenching surface and superior load distribution, which helps prevent flange distortion and bolt fatigue in high-torque scenarios. By utilizing a Class 6H thread fit, this nut ensures precise engagement with mating bolts, reducing installation errors and enhancing the overall safety and longevity of the assembly. It is an ideal high-strength fastener for engineers prioritizing reliability, compliance, and performance in demanding environments.

Specification Summary & Compliance

This hex nut features a Metric M42 x 3mm fine thread with a Class 6H thread fit for precise dimensional accuracy. It is manufactured in accordance with ASTM A194 for heavy-duty nuts and meets the material and mechanical requirements of ASTM Grade 2H. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances. Dimensions are 70mm in width and 39mm in height, with a right-hand thread direction and external hex drive style.