S-90098A035 5/8"-11 Locknuts

Key Features & Benefits at a Glance

• Vibration-resistant locking with nylon insert that maintains secure fastening under dynamic loads
• Superior corrosion resistance from 18-8 stainless steel construction for extended service life in harsh environments
• Precision Class 3B thread fit ensures consistent engagement and reliable performance in critical applications
• Extra-wide thin profile provides increased bearing surface while maintaining low profile design
• High-temperature capability with nylon insert rated to 250°F for demanding industrial conditions
• External hex drive design allows for standard wrench access and efficient installation
• Coarse UNC threading enables quick assembly and disassembly while resisting cross-threading

Professional Applications & Engineering Value

This 5/8"-11 UNC nylon insert locknut delivers exceptional vibration resistance in demanding industrial environments where loosening under dynamic loads poses significant safety risks. The 18-8 stainless steel construction provides outstanding corrosion resistance, making it ideal for applications exposed to moisture, chemicals, or outdoor elements. The extra-wide thin profile offers enhanced bearing surface distribution while maintaining a compact design, perfect for space-constrained assemblies. With its Class 3B precision thread fit, this locknut ensures consistent engagement with mating components, reducing the risk of thread damage during repeated installations. The nylon insert locking mechanism maintains reliable performance up to 250°F, making it suitable for automotive, machinery, and structural applications where thermal cycling occurs.

Specification Summary & Compliance

This locknut features 5/8"-11 UNC coarse threading with Class 3B thread fit precision, ensuring tight tolerances and reliable performance. The external hex drive design accommodates standard wrenching tools for efficient installation. Manufactured from 18-8 stainless steel with dimensions of 1 1/16" width and 5/8" height, this component complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, meeting current regulatory requirements for industrial applications.