S-94902A106 5/8"-11 Flange Nuts

Key Features & Benefits at a Glance

• Exceptional Strength & Reliability: Manufactured from Grade 8 steel, this nut provides superior tensile strength for the most demanding heavy-duty and high-vibration applications.
• Integrated Flange for Secure Fastening: The built-in 1 9/32" diameter flange acts as a built-in washer, distributing clamp load over a wider area to prevent loosening and protect surfaces.
• Superior Corrosion Resistance: The black-phosphate steel finish offers a robust protective layer, significantly enhancing the nut's lifespan in harsh or outdoor environments.
• Precision Thread Fit for Easy Assembly: The Class 2B thread fit on the 5/8"-11 UNC coarse thread ensures smooth, reliable engagement with mating bolts, speeding up installation.
• Optimized for High-Torque Applications: The standard external hex drive and 15/16" width provide excellent grip for wrenches, allowing for secure, high-torque tightening.
• Compliance with Global Standards: Meets REACH and RoHS 3 compliance, ensuring the product is free from hazardous substances for use in regulated markets.
• Versatile Coarse Thread Design: The UNC coarse thread is less prone to cross-threading and is ideal for quick assembly in a wide range of industrial equipment.

Professional Applications & Engineering Value

This Grade 8 flange nut is engineered to solve critical fastening challenges in heavy machinery, construction equipment, and structural frameworks. The black-phosphate steel construction provides a durable barrier against rust and corrosion, making it suitable for outdoor or high-moisture environments where fastener failure is not an option. The integrated flange eliminates the need for a separate washer, reducing part count and assembly time while providing a larger bearing surface to prevent material embedding and joint fatigue. Paired with a 5/8"-11 UNC coarse thread and Class 2B fit, it ensures reliable performance in high-vibration applications, from automotive suspensions to industrial conveyor systems, delivering long-term heavy-duty reliability.

Specification Summary & Compliance

This flange nut conforms to Unified National Coarse (UNC) thread standards with a Class 2B thread fit for consistent, precise mating. Key dimensional specifications include a 1 9/32" flange diameter, 0.12" flange thickness, 15/16" width across flats, and 9/16" height. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial supply chains.