S-90477A118 1"-12 Flange Nuts

Key Features & Benefits at a Glance

• Enhanced Vibration Resistance: The integral flange and rotating design distribute load evenly, preventing loosening under dynamic loads.
• Superior Corrosion Protection: The black-oxide steel finish provides a durable barrier against rust and wear in harsh industrial environments.
• Reliable, Precision Threading: Class 2B fit 1"-12 UNF fine threads ensure smooth engagement and a secure, tight connection.
• Increased Bearing Surface: The large 2" flange diameter reduces surface pressure and protects assembled materials from damage.
• Optimized for High-Strength Applications: The robust 0.47" flange thickness and standard hex profile offer excellent torque transmission and structural integrity.
• Simplified Installation & Maintenance: The external hex drive allows for easy installation and removal with standard tools.
• Compliant & Safe for Regulated Industries: Manufactured to be RoHS 3 compliant, meeting environmental and safety standards.

Professional Applications & Engineering Value

This heavy-duty flange nut is engineered to solve critical challenges in demanding industrial applications where vibration and high stress are common. The combination of black-oxide steel material and a rotating flange design provides exceptional vibration resistance, eliminating the need for separate washers and reducing assembly time. The 1"-12 UNF fine thread with a Class 2B fit offers superior holding power and precision in machinery, heavy equipment, and structural frameworks. Its large 2" diameter flange acts as an integrated washer, distributing clamping force over a wider area to prevent surface damage and maintain joint integrity under extreme loads, making it a reliable high-strength fastening solution.

Specification Summary & Compliance

This flange nut features a Class 2B thread fit for consistent, reliable engagement. It adheres to the UNF (Unified National Fine) thread standard with a size of 1"-12. Key dimensions include a flange diameter of 2", a flange thickness of 0.47", a width of 1 5/8", and a height of 1 15/64". The product is manufactured from steel and is RoHS 3 (2015/863/EU) compliant under exemption 6(a) for lead as an alloying element in steel, ensuring it meets stringent environmental and safety regulations for industrial use.