S-91849A637 9/16"-12 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced load distribution from the extra wide profile, reducing stress concentration and preventing joint failure
• Reliable coarse threading (UNC) for faster assembly and reduced cross-threading risk in heavy-duty applications
• Precise Class 2B thread fit ensures consistent engagement and vibration resistance for secure fastening
• External hex drive design provides high torque capability and compatibility with standard tools
• Full regulatory compliance with RoHS 3 and REACH standards, meeting global environmental and safety mandates
• Robust dimensions (15/16" width, 35/64" height) offer a substantial bearing surface for demanding mechanical assemblies

Professional Applications & Engineering Value

This 9/16"-12 UNC hex nut is engineered to address critical challenges in industrial assembly, where vibration loosening and corrosive degradation compromise system integrity. The 18-8 stainless steel material provides excellent resistance to oxidation and chemical exposure, extending service life in outdoor, marine, or chemical processing equipment. Its extra wide heavy-duty profile distributes clamping force over a larger area, minimizing surface damage and maintaining bolt preload under dynamic stresses. The coarse thread design enables quick installation in structural steel, machinery frames, and conveyor systems, while the Class 2B thread fit guarantees consistent performance in high-vibration environments. This combination of material durability and precision engineering delivers reliable fastening for construction, transportation, and heavy machinery applications.

Specification Summary & Compliance

This hex nut conforms to Unified Coarse (UNC) thread standards with a Class 2B thread fit for consistent dimensional accuracy. Manufacturing adheres to inch system specifications with a 9/16"-12 thread size, 15/16" width, and 35/64" height. The component is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial use.