S-90242A643 5/8"-18 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional corrosion resistance in harsh environments due to Black-Oxide coated 316 Stainless Steel construction, reducing maintenance and replacement costs.
• Reliable fine thread engagement with UNF 5/8"-18 and Class 2B fit ensures vibration-resistant, secure fastening in dynamic applications.
• Superior chemical resistance from 316 Stainless Steel material, ideal for exposure to chemicals, moisture, and extreme industrial conditions.
• Easy installation and removal with standard external hex drive and 15/16" width, allowing for quick assembly using common tools.
• Compliance with strict environmental regulations, including RoHS 3 and REACH, ensuring safe use in regulated industries.
• Durable and long-lasting performance with precise 35/64" height and right-hand thread design, minimizing wear and tear over time.
• Versatile application compatibility across various industrial sectors, thanks to inch system measurement and standard hex nut profile.

Professional Applications & Engineering Value

This 5/8"-18 UNF hex nut is engineered to address common industrial challenges, such as corrosion-induced failures and loosening under vibration. Made from Black-Oxide 316 Stainless Steel, it offers superior resistance to chemicals, saltwater, and high humidity, making it ideal for marine, chemical processing, and outdoor equipment. The Class 2B fine thread fit and UNF thread type provide precise, tight engagement that reduces the risk of thread stripping and ensures stable connections in machinery, automotive assemblies, and structural frameworks. Its external hex drive and standard profile facilitate efficient installation, saving time in high-volume production environments while maintaining consistent performance under heavy loads.

Specification Summary & Compliance

This hex nut adheres to Class 2B thread fit for precise dimensional accuracy under the UNF standard, with a thread size of 5/8"-18 and fine spacing. Manufactured from Black-Oxide 316 Stainless Steel, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory adherence for industrial use. Dimensions include a width of 15/16" and height of 35/64", supporting reliable performance in inch-based systems.