S-93776A101 1/2"-20 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through serrated locking flange design that prevents loosening under dynamic loads
• Excellent corrosion resistance with 18-8 stainless steel construction for long service life in harsh environments
• Precise thread engagement with Class 2B fit ensuring reliable, consistent fastening performance
• Enhanced load distribution from the 1 1/32" flange diameter that reduces surface pressure and material stress
• Industry-standard compatibility with UNF fine thread (1/2"-20) specifications for seamless integration
• Quick installation and removal using standard external hex drive tools for maintenance efficiency
• Environmental compliance assurance meeting both REACH and RoHS 3 standards for responsible manufacturing

Professional Applications & Engineering Value

This 18-8 stainless steel flange lock nut delivers exceptional performance in demanding industrial environments where vibration-induced loosening compromises safety and reliability. The serrated locking mechanism creates permanent friction against mating surfaces, effectively resisting rotational forces in machinery, automotive assemblies, and structural applications. The UNF fine thread configuration (1/2"-20) provides superior thread engagement compared to coarse threads, while the extended flange diameter distributes clamping force over a wider area, preventing surface damage and maintaining joint integrity. Manufactured from corrosion-resistant stainless steel, this flange nut maintains its locking properties and mechanical strength in humid, chemical, or outdoor exposure conditions, making it ideal for permanent installations requiring dependable, maintenance-free fastening solutions.

Specification Summary & Compliance

This flange lock nut features Class 2B thread tolerance for precise fitment with standard UNF threaded components. The 1/2"-20 UNF fine thread specification ensures compatibility with industry-standard fastening systems, while the external hex drive design accommodates standard wrenching tools. Manufacturing complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental directives, confirming the absence of restricted hazardous substances. Critical dimensions include 1 1/32" flange diameter, 3/4" width across flats, and 29/64" height, maintaining consistent quality across production batches for reliable performance in industrial applications.