S-90047A115 5/16"-18 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through center lock distorted thread technology that maintains secure fastening under dynamic loads
• Excellent corrosion protection with 18-8 stainless steel construction for long-term reliability in harsh environments
• Precise thread engagement with Class 2B thread fit ensuring consistent mating and reduced assembly issues
• Enhanced installation efficiency with standard external hex drive design compatible with common wrenching tools
• Reliable performance in demanding applications featuring UNC coarse threads for quick assembly and disassembly
• Compliance with international safety standards including RoHS 3 and REACH for environmental responsibility
• Durable mechanical properties with standard hex nut profile providing optimal torque transmission and load distribution

Professional Applications & Engineering Value

This 5/16"-18 UNC locknut delivers exceptional engineering value through its 18-8 stainless steel composition and innovative center lock distorted thread design. The distorted thread locking mechanism creates controlled interference that effectively counters vibration-induced loosening in machinery, automotive assemblies, and industrial equipment. The corrosion-resistant properties of 18-8 stainless steel ensure long-term performance in moisture-prone environments, reducing maintenance frequency and replacement costs. Combined with UNC coarse threads and external hex drive, this locknut provides rapid installation while maintaining consistent clamping force, making it ideal for production lines where both speed and reliability are critical. The standard hex nut profile ensures compatibility with conventional tools, streamlining maintenance procedures across various industrial sectors.

Specification Summary & Compliance

This locknut features 5/16"-18 UNC coarse threads with Class 2B thread fit for precise dimensional accuracy and reliable mating. The right-hand thread direction and standard hex nut profile (1/2" width, 17/64" height) ensure compatibility with industry-standard applications. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental safety standards for industrial components. The center lock distorted thread type provides consistent locking performance while maintaining the mechanical integrity required for demanding fastening applications.