S-90738A140 3/8"-16 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional strength and reliability with Grade 5 steel construction, ensuring secure fastening in high-stress industrial environments.
• Superior corrosion resistance provided by zinc plating, extending service life in demanding, moisture-prone applications.
• Reliable left-hand threading for specialized assemblies where reverse rotation is required to prevent loosening under counter-clockwise torque.
• Precise UNC coarse thread with Class 2B fit ensures easy, quick assembly and consistent engagement, reducing installation time and errors.
• Standard external hex drive design allows for common tool compatibility, facilitating straightforward installation and removal.
• Compliance with RoHS 3 and REACH regulations guarantees environmental safety and material quality for global industrial use.
• Heavy-duty dimensional stability with 9/16" width and 21/64" height, providing a robust, secure fit in various machinery and equipment.

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel hex nut is engineered to address common industrial challenges such as vibration-induced loosening and corrosion in harsh environments. Its left-hand thread direction is critical for applications where standard right-hand threads would unscrew under specific rotational forces, such as in rotating machinery or certain automotive components. The UNC coarse threading and Class 2B thread fit offer excellent debris resistance and faster assembly, reducing labor costs in production lines. Made from high-strength steel with a durable zinc coating, it provides long-lasting performance in construction, manufacturing, and heavy equipment, ensuring reliable connections that withstand extreme loads and environmental exposure.

Specification Summary & Compliance

This hex nut adheres to inch system standards with a 3/8"-16 UNC coarse thread and Class 2B thread fit for precise dimensional accuracy. It meets Grade 5 strength specifications and is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity for industrial fastener applications.