S-91851A037 7/8"-9 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and outdoor applications.
• Enhanced load distribution from the extra-wide thin profile, reducing surface pressure and preventing material damage.
• Quick and easy installation with coarse UNC threading and Class 2B fit, ensuring smooth assembly and disassembly.
• High-strength external hex drive provides a secure grip for standard wrenches, minimizing slippage during high-torque applications.
• Reliable performance in heavy-duty scenarios due to the robust right-hand thread design and inch system compatibility.
• Compliance with strict environmental standards, including RoHS 3 and REACH, ensuring safety and regulatory adherence for global supply chains.
• Optimized size and weight with precise dimensions (1 7/16" width, 31/64" height), offering a balance of strength and space efficiency.

Professional Applications & Engineering Value

This 7/8"-9 UNC hex nut is engineered to address common challenges in industrial fastening, such as vibration loosening and corrosion-induced failure. The 18-8 Stainless Steel material provides excellent resistance to rust and chemicals, making it suitable for demanding sectors like construction, machinery, and marine equipment. Its extra-wide thin profile distributes clamping force more evenly, reducing the risk of joint fatigue and extending the lifespan of assemblies. With coarse UNC threads and a Class 2B thread fit, it ensures reliable engagement and easy maintenance in high-stress applications, while the external hex drive allows for efficient installation with standard tools. This nut is a cost-effective solution for projects requiring durability, compliance, and consistent performance under varying operational conditions.

Specification Summary & Compliance

This hex nut features a 7/8"-9 UNC coarse thread with Class 2B thread fit for standard tolerance and smooth operation. It adheres to inch system measurements and includes a right-hand thread direction. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for industrial use globally.