S-90212A812 1 3/8"-8 ASTM A194 Hex Nuts
Hex Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with blue PTFE coating that protects against harsh industrial environments and extends service life
- Exceptional load distribution thanks to the extra-wide hex profile, reducing stress concentration and preventing joint failure
- High-strength performance certified to ASTM Grade 2H, ensuring reliable fastening under heavy-duty mechanical loads
- Precise thread engagement with Class 2B fit and UN fine threads, providing vibration resistance and secure assembly
- Industry-standard compliance meeting ASTM A194 specifications for consistent quality and interchangeability
- Optimized torque application through the external hex drive style, enabling efficient installation with standard tools
- Dimensional stability with 2 3/16" width and 1 11/32" height maintaining structural integrity in demanding applications
Professional Applications & Engineering Value
This heavy-duty hex nut delivers critical engineering solutions where standard fasteners fail. The blue PTFE-coated steel construction combats corrosive elements in chemical processing, marine, and outdoor infrastructure, eliminating premature fastener degradation. Its extra-wide profile distributes clamping force evenly across connected surfaces, preventing distortion in high-vibration machinery, structural steel assemblies, and heavy equipment. The UN fine thread design with Class 2B fit ensures precise alignment and resistance to loosening under dynamic loads, making it ideal for industrial fastening applications requiring predictable performance and reduced maintenance cycles.
Specification Summary & Compliance
Manufactured to exacting Class 2B thread fit tolerances with UN fine thread specifications (1 3/8"-8). Complies with ASTM A194 material and dimensional standards and ASTM Grade 2H strength requirements. Meets industry regulations including RoHS and REACH for environmental safety. Right-hand thread direction ensures compatibility with standard assembly practices.
