S-91875A135 1/4"-28 Cap Nuts
Cap 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 corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
- Precise Class 2B thread fit ensures smooth assembly and reliable fastening without cross-threading risks
- Fine UNF thread design provides enhanced vibration resistance and superior load distribution
- External hex drive compatibility allows for standard tool usage and high torque application
- RoHS 3 compliance meets environmental regulations while maintaining mechanical integrity
- Standard cap nut profile offers consistent performance across industrial applications
- Right-hand thread orientation enables straightforward installation following conventional practices
Professional Applications & Engineering Value
Engineered for demanding industrial applications, this 1/4"-28 UNF cap nut delivers exceptional performance where vibration resistance and corrosion protection are critical. The zinc-plated steel construction provides a durable barrier against environmental factors, making it ideal for outdoor equipment, machinery assemblies, and automotive components. The fine thread spacing and Class 2B thread fit ensure secure fastening in high-vibration environments, preventing loosening while maintaining consistent clamping force. The external hex drive design accommodates standard wrenches for efficient installation and maintenance. These cap nuts serve as reliable termination points in structural assemblies, electrical enclosures, and precision equipment where both aesthetic finish and functional performance are essential.
Specification Summary & Compliance
This cap nut features 1/4"-28 UNF fine threads with Class 2B thread fit for precise engagement. Dimensions include 7/16" width across flats and 15/32" height. Manufactured to UNF thread standards with right-hand thread direction. Compliant with RoHS 3 (2015/863/EU) regulations under exemption 6(a)-I for lead as an alloying element in steel. The standard cap nut profile and external hex drive ensure compatibility with industry-standard installation tools and practices.
