S-96278A527 3/8"-16 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through integrated external-tooth lock washer design that maintains secure locking under dynamic loads
• Excellent corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Reliable thread engagement with Class 2B thread fit ensuring consistent performance and easy assembly
• Enhanced locking performance from 400 stainless steel washer that bites into mating surfaces for permanent security
• Industry-standard compatibility with UNC coarse thread (3/8"-16) and right-hand direction for broad application use
• Durable mechanical properties combining 18-8 stainless steel body with hardened 400 series washer for long service life
• Regulatory compliance assurance meeting REACH and RoHS 3 environmental standards for global market acceptance

Professional Applications & Engineering Value

This heavy-duty 3/8"-16 UNC locknut with integrated external-tooth lock washer addresses critical vibration-induced loosening challenges in industrial machinery, automotive assemblies, and structural applications. The combination of 18-8 stainless steel construction and 400 stainless steel washer creates a dual-material solution that resists both corrosion and mechanical fatigue. The external teeth provide positive locking action by embedding into mating surfaces, eliminating the need for additional locking compounds or devices. This engineered fastener maintains clamping force under extreme vibration conditions while the Class 2B thread fit ensures smooth installation without galling. Ideal for equipment subjected to continuous operation, temperature variations, and exposure to corrosive elements, this locking solution delivers predictable performance across manufacturing, transportation, and heavy equipment sectors.

Specification Summary & Compliance

This precision locknut features UNC coarse threading (3/8"-16) with Class 2B thread fit tolerance for reliable engagement. The external hex drive (9/16" width) provides standard tool compatibility while the 25/64" height offers optimal profile for space-constrained applications. The integrated external-tooth lock washer measures 0.656" OD and is manufactured from 400 series stainless steel. Compliant with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, ensuring environmental responsibility and global market acceptance. All components meet industrial fastener standards for dimensional accuracy and mechanical performance.