S-96345A320 3/8"-16 MS17830-6C, NASM17830 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking technology that maintains secure fastening in high-motion environments
• Excellent corrosion resistance provided by 18-8 stainless steel construction for extended service life in harsh conditions
• High-temperature performance with nylon insert rated to 250°F (121°C) for reliable operation in demanding thermal environments
• Precision thread engagement with Class 3B thread fit ensuring consistent, reliable fastening and reduced installation issues
• Industry-standard compliance meeting MS17830-6C and NASM17830 specifications for guaranteed quality and interchangeability
• Easy installation and removal with standard external hex drive design compatible with common wrenching tools
• Environmental regulation compliance with RoHS 3 and REACH standards for safe use across global markets

Professional Applications & Engineering Value

This 3/8"-16 UNC nylon insert locknut delivers exceptional engineering value in applications where vibration-induced loosening poses significant reliability concerns. The 18-8 stainless steel construction provides inherent corrosion resistance, making it ideal for marine, chemical processing, and outdoor industrial equipment. The nylon insert locking mechanism creates consistent friction against mating threads, effectively dampening vibrations that would cause conventional nuts to back off. With its coarse UNC thread profile and Class 3B thread fit, this locknut ensures quick installation and reliable performance in automotive assemblies, machinery frames, and structural applications where thermal cycling and dynamic loads are common. The external hex drive style allows for straightforward installation using standard tools, reducing assembly time while maintaining the precision required for military and aerospace specifications.

Specification Summary & Compliance

This locknut features 3/8"-16 UNC coarse threads with Class 3B thread fit for precision engagement, manufactured to MS17830-6C and NASM17830 standards. The hexagonal profile measures 9/16" across flats with a height of 29/64". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, containing no substances of very high concern above threshold limits. The nylon insert is rated for continuous service up to 250°F maximum temperature while maintaining locking performance.