S-90389A217 7/16"-20 Flange Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments like marine or chemical processing.
• Efficient installation and removal thanks to the external hex drive design, compatible with standard wrenches for quick assembly.
• Enhanced load distribution from the 1" flange diameter, reducing surface pressure and preventing damage to connected materials.
• Reliable, vibration-resistant fastening with fine UNF 7/16"-20 threading and Class 2B fit, ensuring tight, secure connections in dynamic applications.
• Long-term durability and stability due to the robust 0.16" flange thickness and standard hex nut profile, minimizing wear over time.
• Compliance with environmental regulations, meeting RoHS 3 and REACH standards for safe, sustainable use in global supply chains.
• Precise dimensional accuracy with 3/4" width and 9/16" height, enabling consistent performance in automated or manual assembly lines.

Professional Applications & Engineering Value

This 316 stainless steel flange nut is engineered to address common industrial challenges, such as corrosion-induced failure and loosening under vibration. Its UNF fine thread and Class 2B thread fit provide exceptional clamping force and resistance to shock loads, making it ideal for heavy-duty applications in machinery, automotive, and structural assemblies. The integrated flange eliminates the need for separate washers, streamlining installation while distributing stress evenly to prevent surface deformation. With external hex drive compatibility, it supports efficient maintenance in tight spaces, reducing downtime in production environments. This nut's corrosion-resistant properties ensure longevity in humid or chemically aggressive settings, offering a cost-effective solution for industrial fastening needs without compromising on reliability or regulatory compliance.

Specification Summary & Compliance

This flange nut adheres to UNF standard threading with a 7/16"-20 fine thread and Class 2B thread fit for precise dimensional tolerance. Key specifications include a flange diameter of 1", thickness of 0.16", width of 3/4", and height of 9/16". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.