S-91627A114 3/4"-16 Flange Nuts

Key Features & Benefits at a Glance

• Exceptional load distribution with 1 1/2" flange diameter to prevent surface damage and reduce the need for washers
• Superior corrosion resistance through zinc yellow-chromate plating for extended service life in harsh environments
• Maximum strength reliability with Grade 8 classification, ensuring consistent performance under heavy loads and vibration
• Precise thread engagement with Class 2B fit and UNF fine thread for secure, vibration-resistant connections
• Easy installation and removal using standard 1 1/8" external hex drive with common tools
• Optimized flange design with 0.16" thickness providing stable bearing surface without adding excessive weight
• Right-hand thread compatibility for standard assembly procedures across industrial equipment

Professional Applications & Engineering Value

This Grade 8 flange nut delivers critical engineering advantages where vibration resistance and corrosion protection are paramount. The zinc yellow-chromate plated steel construction provides superior barrier protection against moisture, chemicals, and environmental exposure, significantly extending maintenance intervals in outdoor or corrosive industrial settings. The 3/4"-16 UNF fine thread configuration ensures tighter clamping force and better resistance to loosening under dynamic loads compared to coarse threads. The integrated 1 1/2" flange eliminates separate washer requirements while distributing clamping force over a wider area, preventing damage to soft materials and reducing assembly time. These features make it ideal for heavy-duty applications in construction equipment, automotive systems, machinery frames, and structural assemblies where reliability cannot be compromised.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit ensuring consistent engagement with mating components. The UNF (Unified National Fine) thread form follows established industrial standards for compatibility across equipment platforms. The external hex drive conforms to standard wrench sizes for universal tool compatibility. This flange nut meets Grade 8 strength requirements as per ASTM A563 specifications, providing minimum 150 ksi proof load capacity. The zinc yellow-chromate plating offers RoHS and REACH compliant corrosion protection while maintaining electrical conductivity for grounding applications.