S-91078A233 5/8"-11 Hex Nuts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction, ideal for harsh industrial environments
• Space-saving thin profile (3/8" height) allows use in tight clearance applications without sacrificing strength
• Reliable coarse thread engagement with UNC 5/8"-11 threads provides faster assembly and reduced cross-threading risk
• Precise Class 2B thread fit ensures smooth installation and consistent clamping force in Grade 2 applications
• Standard external hex drive enables quick installation using common wrenches, reducing labor time
• Compliance with environmental regulations including RoHS 3 and REACH for global supply chain compatibility
• Cost-effective Grade 2 strength delivers dependable performance for general purpose and heavy-duty fastening

Professional Applications & Engineering Value

This 5/8"-11 UNC thin hex nut addresses critical challenges in industrial assembly where corrosion resistance, space constraints, and installation efficiency are paramount. The zinc-plated steel construction creates a protective barrier against oxidation and chemical exposure, extending service life in manufacturing equipment, structural frameworks, and outdoor applications. The coarse UNC thread design enables rapid installation while maintaining vibration resistance, reducing assembly time in high-volume production environments. With its reduced height profile, this fastener solves clearance issues in compact machinery and layered assemblies where standard nuts would interfere. The external hex drive compatibility with standard tools eliminates the need for specialized equipment, making it ideal for maintenance operations and field service applications across multiple industries.

Specification Summary & Compliance

This inch-system fastener features precise Class 2B thread fit tolerances per UNC standards with 5/8"-11 coarse thread specifications. Manufacturing complies with Grade 2 strength requirements for reliable performance in general industrial applications. The product fully meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental responsibility and global market acceptance. Dimensions include 15/16" width across flats and 3/8" height for consistent interchangeability.