S-91847A580 3/4"-20 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for humid or chemically aggressive environments.
• Exceptional thread engagement from the UNEF extra fine thread spacing, providing increased load distribution and vibration resistance.
• Reliable, precision fit ensured by the Class 2B thread tolerance, minimizing the risk of cross-threading and assembly errors.
• Space-saving design with a thin profile, allowing for use in applications with limited clearance without sacrificing strength.
• Easy installation and removal facilitated by the standard external hex drive, compatible with common wrenches and tools.
• Long-term durability and material integrity from the right-hand threading and robust stainless steel material.
• Compliance with global environmental standards, including RoHS 3 and REACH, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This 3/4"-20 UNEF thin hex nut is engineered to solve critical challenges in precision assemblies where vibration resistance, space constraints, and corrosion are primary concerns. The extra fine thread spacing provides a higher number of threads per inch compared to standard coarse threads, significantly enhancing grip and preventing loosening under dynamic loads in machinery, automotive, and aerospace components. Manufactured from 18-8 stainless steel, it offers excellent resistance to oxidation and chemical exposure, making it suitable for marine, food processing, and pharmaceutical equipment. The Class 2B thread fit ensures consistent, reliable mating with male threads, reducing assembly time and improving operational safety. Its thin hex nut profile is ideal for compact designs, delivering full-thread performance without the bulk, while the external hex drive allows for quick, tool-friendly installation in tight spaces.

Specification Summary & Compliance

This nut conforms to UNEF (Unified National Extra Fine) thread standards with a 3/4"-20 thread size and Class 2B thread fit for consistent dimensional accuracy and interchangeability. Key dimensions include a width of 1 1/8 inch and height of 27/64 inch. It is manufactured in accordance with industry standards for inch system fasteners and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and suitable for global supply chains.