S-91971A012 5/16"-18 Square Nuts
Square Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Exceptional high-temperature resistance up to 3630°F for reliable performance in extreme thermal environments
- Superior tensile strength of 17000 psi provides dependable load-bearing capacity for demanding applications
- Precision Class 6H thread fit ensures consistent engagement and vibration resistance in assembly operations
- Advanced thermal conductivity (12 W/m-K) enables efficient heat dissipation in high-temperature settings
- Lightweight carbon fiber construction reduces component weight while maintaining structural integrity
- External square drive design facilitates secure tool engagement and simplified installation
- Full regulatory compliance with REACH and RoHS 3 standards for environmentally responsible manufacturing
Professional Applications & Engineering Value
This carbon fiber square nut delivers critical engineering advantages in demanding industrial environments where high-temperature performance and weight reduction are paramount. The chopped carbon fiber construction provides exceptional thermal stability while maintaining the 17000 psi tensile strength required for structural fastening applications. With its 5/16"-18 UNC coarse thread configuration and Class 6H thread fit, this nut ensures reliable performance in aerospace, automotive, and industrial equipment subjected to extreme thermal cycling. The material's inherent thermal conductivity properties (12 W/m-K) prevent heat buildup at connection points, while the external square drive design allows for secure installation in confined spaces common in high-performance assemblies.
Specification Summary & Compliance
This square nut features precision 5/16"-18 UNC coarse threads with Class 6H thread fit tolerance, ensuring consistent mating with standard right-hand threaded components. Manufactured to inch system specifications with dimensions of 5/8" width and 1/4" height. The product fully complies with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, confirming adherence to international environmental and safety standards for industrial components.
