S-91627A119 1"-8 Flange Nuts

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Grade 8 strength classification for demanding industrial applications
• Integrated flange eliminates need for separate washers, saving installation time and reducing component count
• Superior corrosion resistance through zinc yellow-chromate plating for extended service life in harsh environments
• Reliable coarse thread engagement with 1"-8 UNC threading for faster assembly and reduced cross-threading risk
• Precision Class 2B thread fit ensures consistent performance and vibration resistance in critical connections
• Standard external hex drive design provides familiar, tool-friendly installation with common wrench sizes
• Heavy-duty 2 1/16" flange diameter distributes clamping force over wider surface area for enhanced joint integrity

Professional Applications & Engineering Value

This Grade 8 flange nut delivers critical engineering solutions where high-strength fastening meets environmental challenges. The zinc yellow-chromate plated steel construction provides superior corrosion resistance for outdoor equipment, structural assemblies, and machinery exposed to moisture and industrial atmospheres. The integrated 2 1/16" flange acts as a built-in washer, distributing clamp load effectively to prevent surface damage and maintain joint integrity under heavy vibration and dynamic loading conditions. With 1"-8 UNC coarse threads and Class 2B fit, this nut ensures rapid assembly in construction, manufacturing, and transportation applications where reliability cannot be compromised. The external hex drive accommodates standard tools for efficient maintenance and disassembly in tight spaces.

Specification Summary & Compliance

This heavy-duty flange nut features precise 1"-8 UNC coarse threads with Class 2B thread fit per ASME B18.2.2 standards. The Grade 8 classification ensures minimum tensile strength of 150 ksi, while the zinc yellow-chromate plating provides corrosion protection in compliance with RoHS and REACH environmental directives. Manufacturing follows inch system specifications with standard hex profile and right-hand thread direction for universal compatibility across industrial applications.