S-90043A030 5/16"-18 Square Nuts

Key Features & Benefits at a Glance

• Enhanced Grip and Anti-Rotation: Square shape provides superior resistance to loosening under vibration, ensuring reliable performance in dynamic industrial environments.
• High-Strength Steel Construction: Offers excellent durability and load-bearing capacity for demanding heavy-duty applications.
• Easy Installation with External Square Drive: Allows for quick and secure tightening using common wrenches, reducing assembly time and labor costs.
• Coarse UNC Thread with Class 2B Fit: Ensures smooth engagement and reliable fastening, minimizing cross-threading risks in high-volume production.
• Right-Hand Thread Design: Standardized for compatibility with most equipment, simplifying maintenance and replacement procedures.
• RoHS 3 and REACH Compliance: Meets stringent environmental and safety regulations, making it suitable for global supply chains and eco-conscious industries.
• Precise Inch Dimensions (9/16" Width, 17/64" Height): Guarantees consistent fit and interchangeability in machinery and structural assemblies.

Professional Applications & Engineering Value

This 5/16"-18 UNC square nut is engineered to address common challenges in industrial fastening, such as vibration-induced loosening and the need for rapid assembly. Made from robust steel, it withstands high stress and corrosive conditions, making it ideal for machinery, automotive, and construction applications. The coarse thread and Class 2B thread fit provide a secure hold without requiring excessive torque, reducing wear on components. Its external square drive design allows for easy access in tight spaces, enhancing efficiency in maintenance and production lines. By integrating this nut, engineers can achieve reliable, long-lasting connections that minimize downtime and comply with industry standards.

Specification Summary & Compliance

This square nut adheres to UNC thread standards with a Class 2B thread fit for consistent dimensional accuracy. It features a coarse thread spacing of 5/16"-18, a width of 9/16", and a height of 17/64". Manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for various industrial and environmental regulations.