S-90498A395 1 1/8"-7 ASME B18.2.2 Hex Nuts

Key Features & Benefits at a Glance

• Superior load distribution thanks to the extra wide hex profile that reduces surface pressure and prevents embedding in soft materials
• Enhanced durability and corrosion resistance from high-quality steel construction, ensuring long service life in harsh industrial environments
• Quick and easy installation with coarse UNC threads that resist cross-threading and speed up assembly in time-sensitive operations
• Reliable, vibration-resistant connections achieved through precise Class 2B thread fit that maintains clamping force under dynamic loads
• Full compliance with ASME B18.2.2 standards guaranteeing dimensional accuracy and interchangeability with other standardized components
• Secure external hex drive compatibility allowing for high-torque application with standard wrenches without stripping
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements for hazardous substances

Professional Applications & Engineering Value

This heavy-duty 1 1/8"-7 UNC hex nut delivers exceptional engineering value in demanding applications where failure is not an option. The extra wide profile provides a larger bearing surface, effectively distributing clamp load and preventing joint loosening in high-vibration environments like heavy machinery, structural steel connections, and industrial equipment. Manufactured from premium steel with coarse thread spacing, it offers superior resistance to galling and seizing, even after repeated disassembly. The Class 2B thread fit ensures consistent engagement with mating bolts, maintaining critical preload in construction, mining, and transportation applications. Its compliance with ASME B18.2.2 guarantees precise dimensional tolerances for reliable performance in critical assemblies.

Specification Summary & Compliance

This extra wide hex nut features a 1 1/8"-7 UNC coarse thread with Class 2B thread fit for optimal clearance and assembly. Dimensions include a 1 13/16" width and 1 7/64" height, manufactured to ASME B18.2.2 specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for global industrial applications.