S-94902A104 1/2"-13 Flange Nuts

Key Features & Benefits at a Glance

• Exceptional Strength & Reliability: Grade 8 classification ensures high tensile strength for demanding, heavy-duty applications.
• Enhanced Corrosion Resistance: Black-phosphate steel coating provides a durable barrier against rust and environmental degradation.
• Integrated Flange Design: The 1 1/32" flange diameter distributes load effectively, reducing surface pressure and preventing loosening under vibration.
• Superior Thread Engagement: Class 2B thread fit offers consistent, reliable mating with Class 2A bolts for secure fastening.
• Wide Flange & Standard Hex: The 0.1" thick flange and 3/4" external hex width allow for high torque application and easy installation with common tools.
• Coarse Thread Advantage: 1/2"-13 UNC coarse threading facilitates quick assembly and is less prone to cross-threading in rugged conditions.
• Compliant & Safe: Meets RoHS 3 and REACH regulations, ensuring environmental safety and suitability for global industrial supply chains.

Professional Applications & Engineering Value

This Grade 8 Black-Phosphate Steel Flange Nut is engineered to address critical challenges in heavy machinery, construction, and automotive assemblies where vibration resistance and long-term reliability are paramount. The integrated flange eliminates the need for a separate washer, speeding up installation while providing a larger bearing surface to protect softer materials from damage. The UNC coarse thread and Class 2B fit ensure rapid, secure engagement with mating bolts, reducing assembly time and the risk of thread stripping in high-stress environments. The black-phosphate finish on the steel substrate offers superior corrosion resistance, making it ideal for outdoor or harsh condition applications. Its external hex drive allows for high torque application with standard wrenches, ensuring a tight, durable connection that withstands dynamic loads and thermal cycling.

Specification Summary & Compliance

This flange nut adheres to UNC coarse thread standards with a size of 1/2"-13 and a Class 2B thread fit for precise, reliable engagement. Manufactured from high-strength steel with a black-phosphate surface treatment, it meets Grade 8 mechanical properties. Key dimensions include a flange diameter of 1 1/32", width of 3/4", and height of 29/64". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of restricted hazardous substances and suitable for industrial use globally.