S-90570A038 1"-8 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional load distribution thanks to the extra wide hex profile that reduces surface pressure and prevents damage to connected components
• Superior strength for demanding applications with Grade 5 steel construction ensuring reliable performance under high stress and vibration
• Secure reverse-thread locking provided by the left-hand UNC thread direction, ideal for counter-rotating machinery and specialized equipment
• Quick installation and removal facilitated by the coarse 1"-8 UNC thread spacing and standard external hex drive compatibility
• Precise, reliable threading ensured by Class 2B thread fit, minimizing cross-threading risks and ensuring consistent engagement
• Enhanced durability in harsh environments with robust steel material resisting wear, corrosion, and mechanical fatigue
• Compliance with global environmental standards including RoHS 3 and REACH, making it suitable for regulated industries and export markets

Professional Applications & Engineering Value

This heavy-duty hex nut is engineered to address critical challenges in industrial settings where reverse rotation or high torque is present. The left-hand thread direction provides a secure fastening solution for rotating shafts, mixer blades, and machinery where standard right-hand threads would loosen. Constructed from Grade 5 steel, it offers excellent tensile strength and fatigue resistance, making it ideal for construction equipment, automotive assemblies, and heavy machinery. The extra wide profile distributes clamping force more evenly, reducing the risk of joint failure and surface damage. With its coarse UNC thread and precise Class 2B fit, it ensures rapid assembly and reliable performance in high-vibration environments, minimizing maintenance downtime and enhancing operational safety.

Specification Summary & Compliance

This nut features a 1"-8 UNC coarse thread with Class 2B thread fit for consistent engagement and dimensional accuracy. It conforms to inch system standards and is manufactured from Grade 5 steel for guaranteed mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial use worldwide.