S-91849A131 5/16"-24 Hex Nuts

Key Features & Benefits at a Glance

• Enhanced torque distribution with an extra wide hex profile for secure fastening and reduced risk of rounding during installation
• Superior corrosion resistance provided by 18-8 stainless steel material, ensuring longevity in harsh industrial environments
• Precise thread engagement with Class 2B thread fit for consistent performance and reduced cross-threading in fine thread applications
• Reliable fine thread design (5/16"-24 UNF) offering higher tensile strength and vibration resistance compared to coarse threads
• Compliance with environmental standards including RoHS 3 and REACH, making it suitable for regulated industries and export markets
• External hex drive compatibility with standard tools for quick installation and removal in space-constrained assemblies
• Right-hand thread direction for standard clockwise tightening, compatible with common industrial equipment and practices

Professional Applications & Engineering Value

This 5/16"-24 UNF fine thread hex nut delivers exceptional engineering value through its 18-8 stainless steel construction and extra wide profile, specifically designed to address common industrial fastening challenges. The Class 2B thread fit ensures precise mating with UNF threaded components, minimizing backlash and maintaining clamp force in high-vibration environments such as machinery, automotive assemblies, and precision equipment. The fine thread spacing provides superior resistance to loosening under dynamic loads, while the external hex drive enables efficient installation with standard wrenches. Ideal for applications requiring repeated disassembly, this nut's corrosion-resistant properties make it suitable for marine, chemical processing, and outdoor equipment where environmental factors would compromise ordinary fasteners.

Specification Summary & Compliance

This extra wide hex nut features precise 5/16"-24 UNF fine threads with Class 2B thread fit per Unified National Fine standards, ensuring dimensional accuracy and reliable performance. Manufactured from 18-8 stainless steel with dimensions of 9/16" width and 19/64" height, it maintains consistent quality across production batches. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental standards for hazardous substance restrictions. Suitable for use in inch-system applications, this nut adheres to industrial manufacturing specifications for heavy-duty fastening solutions.