S-90389A114 1/4"-20 Flange Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and extended service life
• Efficient installation and removal via the external hex drive and standard hex profile, compatible with common tools
• Enhanced load distribution and vibration resistance from the integrated 19/32" flange, reducing the risk of loosening
• Reliable thread engagement with Class 2B fit and coarse UNC threads, ensuring consistent performance in demanding applications
• Robust structural integrity from the heavy-duty design, suitable for high-stress industrial assemblies
• Full regulatory compliance with RoHS 3 and REACH, meeting strict international environmental and safety standards
• Wide industrial compatibility due to the standardized 1/4"-20 UNC right-hand thread, facilitating easy integration

Professional Applications & Engineering Value

This 316 Stainless Steel flange nut is engineered to address common industrial challenges such as corrosion-induced failure and joint instability. The UNC coarse thread and Class 2B fit provide rapid assembly and reliable clamping force, minimizing the risk of cross-threading in high-vibration settings like machinery, automotive, and marine equipment. The integrated flange design acts as a built-in washer, distributing load evenly and protecting surfaces from damage, while the external hex drive ensures secure tightening with standard wrenches. Its corrosion-resistant properties make it ideal for outdoor, chemical, and saline environments, reducing maintenance needs and enhancing the longevity of critical assemblies.

Specification Summary & Compliance

This flange nut adheres to UNC thread standards with a Class 2B thread fit for consistent dimensional accuracy. Key specifications include a 1/4"-20 thread size, 19/32" flange diameter, 7/16" width, and 15/64" height. It 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 global industrial use.