S-91847A575 1/2"-28 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extending service life.
• Space-saving thin profile (5/16" height) allows for use in compact assemblies where standard nuts are too bulky.
• Exceptional thread engagement and vibration resistance from the extra fine UNEF thread (1/2"-28), providing a secure, reliable fit.
• Precise and consistent thread fit ensured by Class 2B tolerance, facilitating easier assembly and reducing cross-threading risks.
• Easy installation and removal with a standard 3/4" external hex drive, compatible with common wrenches for efficient maintenance.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global supply chains.
• Right-hand thread design offers standard directional tightening for straightforward integration into existing systems.

Professional Applications & Engineering Value

This 1/2"-28 UNEF thin hex nut is engineered to address critical challenges in precision assemblies, such as in aerospace, automotive, and high-performance machinery. The extra fine thread provides a higher number of threads per inch, delivering superior clamping force and enhanced resistance to loosening under vibration—a common failure point in dynamic applications. Manufactured from 18-8 stainless steel, it offers excellent corrosion resistance, reducing maintenance needs and part replacement in corrosive settings. The thin profile is particularly valuable in weight-sensitive or space-constrained designs, allowing engineers to maintain structural integrity without compromising on fastener performance. Its Class 2B thread fit ensures reliable, repeatable installation, minimizing assembly errors and improving overall system reliability.

Specification Summary & Compliance

This nut features a 1/2"-28 UNEF extra fine thread with a Class 2B thread fit for consistent dimensional accuracy. Key dimensions include a width of 3/4" and a height of 5/16". It is manufactured in accordance with unified inch standards for right-hand thread direction and external hex drive. The product 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.