S-91850A235 5/8"-18 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments like marine or chemical processing.
• Enhanced grip and torque application due to the extra wide hex profile, reducing slippage during installation.
• Precise thread engagement with Class 2B fit and UNF fine threading, ensuring reliable, vibration-resistant connections.
• Durable performance in demanding applications from the right-hand thread and external hex drive, facilitating easy assembly with standard tools.
• Compliance with industry safety standards including RoHS 3 and REACH, providing peace of mind for regulated sectors.
• Optimized for inch-system machinery with a 5/8"-18 thread size, offering seamless compatibility in North American industrial setups.
• Robust dimensional stability with a width of 1 1/16" and height of 39/64", supporting heavy-duty fastening needs.

Professional Applications & Engineering Value

This 316 stainless steel extra wide hex nut is engineered to address common industrial challenges such as corrosion-induced failure and loosening under vibration. Its UNF fine thread and Class 2B thread fit provide a tight, secure connection that minimizes the risk of wear in high-stress environments like machinery assembly, automotive systems, and offshore equipment. The external hex drive allows for efficient installation with standard wrenches, reducing downtime. Made from premium 316 stainless steel, it excels in applications requiring resistance to chemicals, saltwater, and extreme temperatures, making it a reliable choice for industrial fasteners in sectors such as oil and gas, marine engineering, and food processing where durability and compliance are critical.

Specification Summary & Compliance

This hex nut adheres to inch system standards with a thread size of 5/8"-18 UNF and Class 2B thread fit for precise dimensional accuracy. It meets manufacturing specifications for right-hand thread direction and fine thread spacing, ensuring consistent performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it supports safe and environmentally responsible use in industrial settings.