S-94902A105 1/2"-20 Flange Nuts

Key Features & Benefits at a Glance

• Exceptional strength and reliability with Grade 8 classification, ensuring secure fastening in demanding industrial environments.
• Superior corrosion resistance thanks to the black-phosphate steel coating, extending service life in harsh conditions.
• Integrated flange design with a 1 1/32" diameter distributes load evenly, reducing the risk of surface damage and loosening.
• Precise UNF fine thread (1/2"-20) and Class 2B fit provide smooth engagement and vibration resistance for stable assemblies.
• Easy installation and removal with a standard 3/4" external hex drive, compatible with common tools for efficient maintenance.
• Compliance with environmental standards including REACH and RoHS 3, ensuring safe and sustainable use in global markets.
• Right-hand thread orientation offers compatibility with standard components, simplifying procurement and assembly processes.

Professional Applications & Engineering Value

This Grade 8 black-phosphate steel flange nut is engineered to address critical challenges in heavy-duty applications, such as machinery, automotive, and construction equipment. The UNF fine thread (1/2"-20) and Class 2B thread fit ensure tight, reliable connections that resist loosening under vibration and dynamic loads. The integrated flange design eliminates the need for separate washers, reducing assembly time and minimizing points of failure. Made from robust black-phosphate coated steel, it provides excellent corrosion resistance, making it ideal for outdoor or corrosive environments. By combining high strength with environmental compliance (REACH and RoHS 3), this nut delivers long-term performance and safety in industrial fastening systems.

Specification Summary & Compliance

This flange nut adheres to precise standards, including a Class 2B thread fit for consistent engagement and a 1/2"-20 UNF fine thread with right-hand direction. Key dimensions are a 3/4" width, 29/64" height, and 1 1/32" flange diameter with 0.1" thickness. It complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) regulations, ensuring environmental safety and suitability for various industrial applications.