S-91015A037 7/8"-9 Hex Nuts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel coating, extending service life in harsh industrial environments.
• Superior torque distribution from the extra-wide thin profile, reducing the risk of stripping and ensuring secure fastening.
• Quick and easy installation with coarse UNC threads and Class 2B fit, allowing for faster assembly without compromising hold strength.
• Reliable performance under heavy loads due to robust steel construction, ideal for demanding mechanical applications.
• Broad compatibility with standard 7/8"-9 UNC bolts, simplifying sourcing and replacement in existing systems.
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe and sustainable use globally.
• Optimized for external hex drive tools, providing a firm grip and reducing slippage during tightening.

Professional Applications & Engineering Value

This 7/8"-9 UNC hex nut is engineered to address common challenges in heavy machinery, construction, and automotive assemblies where vibration and load stress can cause fastener failure. The black-oxide steel finish offers a protective layer against rust and oxidation, crucial for outdoor or high-moisture settings. Its extra-wide thin profile distributes clamping force more evenly, minimizing surface damage and maintaining joint integrity over time. With a coarse thread and Class 2B fit, it ensures rapid installation and reliable performance in dynamic applications, reducing downtime and maintenance costs. Ideal for structural frameworks, equipment mounts, and industrial fastening systems requiring corrosion resistance and durability.

Specification Summary & Compliance

This nut adheres to UNC coarse thread standards with a Class 2B thread fit for consistent engagement and tolerance. Dimensions include a width of 1 7/16" and height of 31/64", manufactured to precise industrial specifications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global supply chains. The external hex drive and right-hand thread design follow common engineering practices for seamless integration.