S-94831A671 1/2"-20 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through precision-engineered serrations that maintain locking force under extreme conditions
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in harsh environments
• Reliable thread engagement with Class 2B thread fit ensuring consistent performance and easy assembly
• Increased bearing surface from the 1 1/32" flange diameter distributing load effectively and preventing surface damage
• Secure fastening solution combining flange design with locking serrations for dual anti-loosening protection
• Industry-standard compatibility with 1/2"-20 UNF fine threads meeting precise engineering requirements
• Environmental compliance assurance with REACH and RoHS 3 certifications for safe industrial usage

Professional Applications & Engineering Value

This heavy-duty flange locknut addresses critical vibration-induced loosening challenges in industrial machinery, automotive assemblies, and structural applications. The zinc-plated steel construction provides essential corrosion resistance while maintaining high tensile strength. Precision serrations beneath the flange bite into mating surfaces, creating permanent friction locks that outperform standard nuts in high-vibration environments. The 1/2"-20 UNF fine thread configuration offers superior thread engagement and load distribution compared to coarse threads, making it ideal for precision equipment requiring vibration-resistant fastening solutions. The integrated flange eliminates the need for separate washers, streamlining assembly while providing superior clamping force.

Specification Summary & Compliance

This flange locknut features Class 2B thread fit per UNF standards with precise 1/2"-20 fine threading. The external hex drive (3/4" width) provides standard tool compatibility while the 1 1/32" flange diameter with 0.13" thickness ensures optimal load distribution. Manufacturing complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental directives, guaranteeing industrial safety standards. The right-hand thread direction and standard hex nut profile maintain compatibility with existing fastener systems and tooling.