S-91849A640 5/8"-11 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Superior load distribution and vibration resistance due to the extra wide profile, reducing the risk of loosening and component failure.
• Reliable and precise assembly ensured by the Class 2B thread fit, providing consistent mating with male threads for secure connections.
• Quick and easy installation with a standard external hex drive and coarse (UNC) thread, speeding up assembly times in maintenance and production.
• Heavy-duty performance from the robust 1 1/16" width and 39/64" height, designed to handle high-stress applications.
• Global compliance and safety with RoHS 3 and REACH regulations, ensuring the nut is free from hazardous substances for use in regulated markets.
• Long-term durability and cost-efficiency as the stainless steel material resists rust and wear, minimizing replacement needs and downtime.

Professional Applications & Engineering Value

This heavy-duty hex nut is engineered to solve common industrial challenges such as joint failure under dynamic loads and corrosion in demanding settings. Crafted from 18-8 stainless steel, it offers excellent strength and resistance to oxidation, making it suitable for applications in construction, machinery, and marine equipment. The extra wide profile enhances surface contact, distributing stress more evenly to prevent damage to connected parts. With a coarse UNC thread and right-hand direction, it facilitates rapid installation and removal, reducing labor time in assembly lines and field repairs. Its external hex drive allows for standard tool compatibility, ensuring versatility across various industrial nuts and fastener systems. This nut is a reliable choice for engineers seeking a balance of performance, compliance, and longevity in inch system applications.

Specification Summary & Compliance

This hex nut adheres to precise dimensional standards, featuring a 5/8"-11 UNC coarse thread with a Class 2B thread fit for consistent accuracy and ease of assembly. It conforms to industry manufacturing norms for external hex drive fasteners and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.