S-91045A035 5/8"-11 Flange Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide steel coating, ensuring long-lasting performance in harsh industrial environments.
• Precise leveling capability with up to 1° maximum correction, allowing for accurate alignment in machinery and structural applications.
• Enhanced load distribution from the 1 3/8" flange diameter, reducing surface pressure and preventing damage to connected materials.
• Reliable coarse threading with UNC 5/8"-11 and Class 2B fit, providing easy assembly and secure fastening in high-vibration settings.
• Durable construction with a standard hex profile and external drive, enabling quick installation using common tools without slippage.
• Integrated steel washer design with 7/32" thickness, eliminating the need for separate washers and streamlining inventory management.
• Compliance with environmental standards including RoHS 3, ensuring safe use in regulated industries without lead concerns under exemption 6(a).

Professional Applications & Engineering Value

This black-oxide steel flange nut is engineered to address common challenges in industrial leveling and alignment, such as uneven surfaces and vibration-induced loosening. The UNC coarse thread and Class 2B thread fit ensure smooth engagement and tight fastening, reducing the risk of thread stripping in repetitive adjustments. With a 1° maximum correction capability, it provides precise leveling for machinery bases, structural frameworks, and heavy equipment, minimizing downtime and maintenance costs. The external hex drive style and integrated flange eliminate the need for additional washers, simplifying assembly in tight spaces. Ideal for applications in manufacturing, construction, and automotive sectors, this nut delivers consistent performance where durability and reliability are critical.

Specification Summary & Compliance

This flange nut adheres to inch system standards with a thread size of 5/8"-11 UNC and Class 2B thread fit for precise tolerance. It meets RoHS 3 (2015/863/EU) compliance under exemption 6(a) for lead as an alloying element in steel, ensuring environmental safety. The design includes a flange diameter of 1 3/8" and thickness of 0.19", manufactured to provide reliable performance in leveling applications with a maximum correction of 1°.