S-91971A011 1/4"-20 Square Nuts

Key Features & Benefits at a Glance

• Exceptional heat resistance maintains structural integrity at extreme temperatures up to 3630°F, preventing deformation in high-temperature industrial environments
• Superior strength-to-weight ratio from carbon fiber construction provides 17,000 psi tensile strength while reducing component weight for optimized assembly performance
• Precision thread engagement with Class 6H thread fit ensures reliable, vibration-resistant connections in demanding applications
• Enhanced thermal management with 12 W/m-K thermal conductivity helps dissipate heat efficiently from critical assembly points
• Durable chopped carbon construction offers excellent corrosion resistance and long-term reliability without metallic corrosion concerns
• Simplified installation with external square drive design allows for quick, secure tool engagement and efficient assembly processes
• Regulatory compliance assurance with REACH and RoHS 3 certification meets international environmental and safety standards

Professional Applications & Engineering Value

This carbon fiber square nut delivers critical engineering advantages in extreme environments where traditional metal fasteners fail. The chopped carbon construction provides exceptional thermal stability at temperatures reaching 3630°F, making it ideal for aerospace, automotive, and industrial heating applications where thermal degradation compromises fastener integrity. The 1/4"-20 UNC coarse thread configuration ensures reliable engagement even in high-vibration settings, while the external square drive facilitates secure tool mating during installation. With 12 W/m-K thermal conductivity, this nut effectively manages heat transfer at connection points, preventing thermal buildup that can lead to joint failure. The combination of high-temperature resistance and 17,000 psi tensile strength addresses the critical need for durable fastening solutions in demanding industrial assemblies where both mechanical performance and thermal management are paramount.

Specification Summary & Compliance

This precision square nut features 1/4"-20 UNC coarse threads with Class 6H thread fit tolerance for consistent engagement quality. Manufactured to inch measurement standards with right-hand thread direction and external square drive configuration. The product fully complies with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, ensuring environmental responsibility and workplace safety. Dimensions include 1/2" width and 1/4" height for standardized installation across industrial equipment and machinery applications.