S-95140A153 9/16"-18 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional strength and durability with Grade 5 steel construction, ensuring reliable performance in high-stress industrial environments.
• Secure left-hand thread engagement prevents loosening under counter-clockwise rotational forces, ideal for specialized machinery and safety-critical assemblies.
• Precise Class 2B thread fit offers consistent mating with bolts, reducing the risk of cross-threading and improving assembly efficiency.
• Fine UNF threading (18 TPI) provides superior vibration resistance and allows for finer adjustments in precision applications.
• Standard external hex drive design ensures compatibility with common wrenches and sockets, facilitating quick installation and removal.
• Full compliance with RoHS 3 and REACH regulations guarantees environmental safety and unrestricted use in global industrial supply chains.
• Robust 7/8" width and 31/64" height delivers a substantial bearing surface for even load distribution and enhanced joint integrity.

Professional Applications & Engineering Value

This Grade 5 steel hex nut with a left-hand 9/16"-18 UNF fine thread is engineered to address critical challenges in machinery, automotive, and heavy equipment sectors where reverse rotation is a concern. The left-hand thread direction effectively counters unintended loosening in applications subject to counter-clockwise torque, such as certain types of motors, presses, and rotating shafts. Manufactured from high-strength steel, it withstands significant tensile and shear stresses, while the fine thread spacing enhances grip and vibration dampening. The external hex drive allows for high-torque installation with standard tools, reducing assembly time and maintenance downtime. Its Class 2B thread fit ensures precise, reliable engagement with matching UNF bolts, minimizing the risk of thread damage and ensuring long-term operational safety in demanding industrial applications.

Specification Summary & Compliance

This hex nut adheres to inch system standards with a thread size of 9/16"-18 UNF and a Class 2B thread fit for consistent dimensional accuracy. It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in regulated industries. The nut meets the mechanical properties specified for Grade 5 strength classification, providing reliable performance under various load conditions.