S-90043A115 1 1/4"-7 Square Nuts
Square Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior durability and longevity with high-grade steel construction, ideal for heavy-duty industrial applications.
- Enhanced torque transmission through the external square drive design, allowing for secure tightening with standard tools.
- Reliable thread engagement with Class 2B thread fit, ensuring consistent performance and reduced risk of cross-threading.
- Quick assembly in demanding conditions thanks to coarse UNC threading, which resists fouling and speeds up installation.
- Broad compatibility with inch-system components and right-hand threaded bolts, simplifying inventory and replacement.
- Environmental and regulatory safety with full RoHS 3 and REACH compliance, meeting strict industry standards for hazardous substances.
- Stable and non-rotating fit due to the square shape, providing added security in high-vibration environments.
Professional Applications & Engineering Value
This 1 1/4"-7 UNC square nut is engineered from robust steel to address common challenges in industrial fastening, such as vibration loosening and corrosion in harsh settings. The external square drive allows for high-torque application with common wrenches, reducing installation time and improving clamp load consistency. Its coarse thread design is less prone to clogging with debris, making it suitable for construction, machinery, and automotive assemblies where maintenance access is limited. By combining precise Class 2B thread fit with a square profile that resists rotation, this nut delivers reliable, long-term performance in structural and heavy equipment applications, minimizing downtime and replacement costs.
Specification Summary & Compliance
This square nut adheres to UNC coarse thread standards with a Class 2B thread fit for consistent dimensional accuracy. It is manufactured in accordance with inch system specifications, featuring a thread size of 1 1/4"-7, width of 1 7/8", and height of 1 3/32". The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from restricted substances and safe for use in various industrial and international markets.
