S-98427A450 1 1/4"-7 ASTM A563 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 thanks to the extra wide hex profile, reducing surface pressure and preventing material damage
- Maximum torque capability with external hex drive design, ensuring secure fastening in heavy-duty applications
- High-strength performance meeting ASTM Grade DH requirements for reliable use in demanding industrial environments
- Precise thread engagement with Class 2B thread fit, providing consistent assembly and vibration resistance
- Enhanced durability from carbon steel construction, offering excellent resistance to wear and corrosion
- Regulatory compliance with RoHS 3 and REACH standards, ensuring safe and environmentally responsible manufacturing
- Quick installation with coarse UNC threading, reducing assembly time while maintaining strong holding power
Professional Applications & Engineering Value
This heavy-duty hex nut delivers exceptional engineering value through its extra wide profile and ASTM A563 Grade DH certification. The carbon steel construction combined with the coarse UNC threading provides superior resistance to vibration loosening in high-stress applications such as structural steel connections, heavy machinery assembly, and industrial equipment maintenance. The 2-inch width and external hex drive design enable higher torque application without stripping, while the Class 2B thread fit ensures consistent performance across repeated installations. These features make it ideal for construction, manufacturing, and infrastructure projects where reliable fastening solutions are critical to operational safety and longevity.
Specification Summary & Compliance
This hex nut features 1 1/4"-7 UNC coarse threading with Class 2B thread fit tolerance for precise engagement. Manufactured to ASTM A563 specifications with Grade DH strength classification, it measures 2" in width and 1 7/32" in height. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to international safety and sustainability standards for industrial fasteners.
