S-90738A240 1 1/4"-7 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional strength and reliability with Grade 5 steel construction, ensuring high load-bearing capacity for demanding industrial applications.
• Superior corrosion resistance provided by zinc plating, extending the nut's service life in harsh or outdoor environments.
• Secure left-hand thread engagement designed for specialized machinery and assemblies where reverse threading prevents loosening under counter-clockwise rotation.
• Precise and durable coarse threading with UNC 1 1/4"-7 and Class 2B fit, enabling quick assembly and reduced cross-threading risks.
• Easy installation and removal thanks to the standard external hex drive profile, compatible with common wrenches for efficient maintenance.
• Compliance with strict environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries.
• Heavy-duty design with dimensions of 1 7/8" width and 1 1/16" height, offering robust performance in high-vibration settings.

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel hex nut with a left-hand thread and UNC coarse threading addresses critical engineering challenges in industries such as automotive, machinery, and construction. The zinc-plated finish combats corrosion, while the left-hand thread direction provides a reliable fastening solution for components subject to reverse rotational forces, preventing accidental loosening. Its heavy-duty coarse thread ensures rapid assembly and high resistance to vibration, making it ideal for equipment requiring frequent disassembly. By integrating Class 2B thread fit and external hex drive, this nut simplifies maintenance and enhances safety in industrial applications, reducing downtime and improving operational efficiency.

Specification Summary & Compliance

This hex nut adheres to precise dimensional standards, including a Class 2B thread fit for consistent engagement and UNC coarse thread specifications (1 1/4"-7). Manufactured from zinc-plated steel with a Grade 5 strength classification, it meets rigorous performance requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.