S-91094A113 5/16"-18 Flange Nuts

Key Features & Benefits at a Glance

• Exceptional strength and reliability with Grade 8 steel construction, ensuring high tensile strength for heavy-duty and high-stress applications.
• Superior vibration resistance thanks to the integrated flange design, which eliminates the need for a separate washer and maintains secure fastening under dynamic loads.
• Easy installation and removal with a standard external hex drive and coarse UNC threads, allowing for quick assembly in industrial settings.
• Precise thread fit and durability with Class 2B thread tolerance, providing consistent engagement and reducing the risk of cross-threading or stripping.
• Enhanced load distribution from the 11/16" flange diameter, minimizing surface pressure and protecting connected materials from damage.
• Compliance with environmental and safety standards including REACH and RoHS 3, ensuring safe use in regulated industries.
• Robust corrosion resistance from the steel material, offering long-term performance in harsh operating environments.

Professional Applications & Engineering Value

This Grade 8 steel flange nut is engineered to address common industrial challenges such as joint loosening under vibration and high-load failures. The UNC coarse thread design ensures rapid installation and reliable holding power in heavy machinery, automotive assemblies, and structural frameworks. With its external hex drive and integrated flange, it distributes clamping force evenly, reducing the risk of surface damage and maintaining bolt preload. Ideal for applications requiring vibration resistance and repeated disassembly, this nut meets the demands of industrial fasteners in construction, manufacturing, and equipment maintenance, delivering consistent performance where durability is critical.

Specification Summary & Compliance

This flange nut adheres to precise dimensional standards, including a Class 2B thread fit for consistent engagement and a UNC 5/16"-18 coarse thread for reliable performance. It complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) regulations, ensuring environmental safety. Manufactured from Grade 8 steel, it meets high-strength requirements for industrial use, with a flange diameter of 11/16" and standard hex profile for compatibility with common tools.