S-91694A330 7/8"-9 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
- Exceptional corrosion resistance with hot-dipped galvanized steel coating for long-term durability in harsh industrial environments
- Superior load distribution thanks to the extra wide profile that reduces surface pressure and prevents material deformation
- Reliable fastening performance with Class 2B thread fit ensuring smooth assembly and consistent clamping force
- Heavy-duty strength certification meeting ASTM Grade DH specifications for high-stress applications
- Quick installation efficiency with coarse UNC threads that enable faster assembly and reduced cross-threading risk
- Secure external hex drive design providing excellent tool engagement and torque transmission
- Environmental compliance assurance with RoHS 3 certification for safe usage in regulated industries
Professional Applications & Engineering Value
This heavy-duty hex nut delivers exceptional engineering value for demanding industrial applications where vibration resistance and long-term reliability are critical. The hot-dipped galvanized steel construction provides superior protection against rust and corrosion, making it ideal for outdoor infrastructure, construction equipment, and marine environments. The extra wide profile distributes clamping force more effectively, reducing the risk of joint loosening under dynamic loads. With 7/8"-9 UNC coarse threads and Class 2B thread fit, these nuts offer faster installation while maintaining precise thread engagement. Engineered to meet ASTM A563 Grade DH specifications, this fastener ensures consistent performance in structural applications, heavy machinery, and industrial assemblies where failure is not an option.
Specification Summary & Compliance
This 7/8"-9 UNC hex nut features Class 2B thread fit tolerance for reliable assembly compatibility. Manufactured in compliance with ASTM A563 Grade DH standards for mechanical properties and dimensional requirements. The product meets RoHS 3 (2015/863/EU) environmental compliance standards and features right-hand thread direction with coarse thread spacing. Dimensions include 1 7/16" width and 55/64" height for consistent performance across industrial applications.
