S-96278A411 10-32 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through integrated external-tooth lock washer design that maintains clamping force in high-motion environments
• Excellent corrosion resistance with 18-8 stainless steel nut body and 400 stainless steel washer for extended service life in harsh conditions
• Precise thread engagement with Class 2B fit ensuring reliable, consistent fastening performance across multiple installations
• Enhanced locking security from the external-tooth washer that bites into mating surfaces to prevent rotation under dynamic loads
• Industry-standard compatibility with 10-32 UNF fine thread specifications for broad application across industrial equipment
• Easy installation and removal using standard 3/8" external hex drive for efficient maintenance and assembly operations
• Environmental compliance assurance meeting REACH and RoHS 3 standards for safe use in regulated industries

Professional Applications & Engineering Value

This 10-32 UNF locknut with integrated external-tooth lock washer addresses critical vibration-induced loosening challenges in industrial machinery, automotive assemblies, and precision equipment. The 18-8 stainless steel construction provides exceptional corrosion resistance while maintaining mechanical strength, making it ideal for applications exposed to moisture, chemicals, or temperature variations. The fine thread configuration offers superior clamping force distribution and better resistance to vibrational loosening compared to coarse threads. Combined with the 400 stainless steel washer that creates positive locking action by biting into mating surfaces, this fastener system ensures reliable performance in dynamic loading conditions where traditional nuts might fail. The right-hand thread direction and external hex drive provide familiar installation for maintenance technicians while delivering professional-grade locking security.

Specification Summary & Compliance

This locknut features Class 2B thread fit per UNF standards, ensuring precise dimensional accuracy and reliable thread engagement. The fastener maintains 3/8" hex width and 11/64" height for standardized tool compatibility. Manufacturing complies with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, confirming environmental compliance for industrial applications. The external-tooth lock washer with 0.406" OD provides consistent locking performance while the 18-8 stainless steel and 400 stainless steel materials ensure corrosion resistance and mechanical durability.