S-91094A122 7/8"-9 Flange Nuts

Key Features & Benefits at a Glance

• Superior Load Distribution – The 1 3/4" flange diameter spreads clamping force over a wider area, reducing surface pressure and preventing damage to assembled components.
• Exceptional Tensile Strength – Manufactured from Grade 8 steel, this nut provides high resistance to stretching and breaking under extreme loads.
• Reliable Vibration Resistance – The integrated flange acts as a built-in washer, maintaining clamp load and resisting loosening in high-vibration environments.
• Quick and Easy Installation – Coarse 7/8"-9 UNC threads allow for faster assembly compared to fine threads, saving valuable labor time.
• Precision Thread Fit – Class 2B thread fit ensures smooth, consistent engagement with mating bolts for a secure and reliable connection.
• Standard External Hex Drive – Compatible with common wrenches and sockets for straightforward installation and removal with standard tools.
• Environmental and Safety Compliance – Meets REACH and RoHS 3 standards, ensuring the nut is free from hazardous substances for safe use in regulated industries.

Professional Applications & Engineering Value

This Grade 8 steel flange nut is engineered for demanding applications where failure is not an option. The robust UNC coarse thread design is ideal for rapid assembly in structural steelwork, heavy machinery, and transportation equipment, where its high vibration resistance prevents joint failure. The large 1 3/4" flange diameter eliminates the need for a separate washer, distributing load efficiently on softer materials or painted surfaces. Its external hex drive ensures compatibility with standard industrial tools, streamlining maintenance and reducing downtime. This nut delivers critical engineering value by combining high strength with installation efficiency in construction, manufacturing, and automotive sectors.

Specification Summary & Compliance

This flange nut features a 7/8"-9 UNC coarse thread with a precision Class 2B thread fit for consistent performance. It conforms to standard dimensional and thread specifications for inch-series fasteners. The product is manufactured in compliance with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) regulations, ensuring it is free from hazardous substances. The Grade 8 strength classification confirms its high mechanical properties suitable for critical industrial applications.