S-91853A029 1/4"-20 Locknuts
Locknuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Secure locking mechanism with cotter pin compatibility prevents loosening under vibration and dynamic loads
- Superior corrosion resistance from 18-8 stainless steel construction ensures long-term reliability in harsh environments
- Precision UNC coarse threading (1/4"-20) enables quick installation and removal while maintaining secure connections
- External hex drive design provides standard tool compatibility and reliable torque application
- Class 2B thread fit guarantees consistent engagement and proper fastening performance
- Environmental compliance with RoHS 3 and REACH regulations for safe industrial usage
- Optimized slot dimensions (0.09" depth, 0.07" width) ensure reliable cotter pin retention
Professional Applications & Engineering Value
This stainless steel castle locknut delivers critical safety and reliability in demanding applications where vibration-induced loosening poses significant risks. The cotter pin locking mechanism provides permanent mechanical security, making it ideal for industrial machinery, automotive assemblies, and agricultural equipment where UNC coarse threads facilitate maintenance efficiency. The 18-8 stainless steel composition offers excellent corrosion resistance in outdoor and chemical-exposed environments, while the external hex drive ensures compatibility with standard wrenches. This castle nut design solves the engineering challenge of maintaining secure fastening in high-vibration systems without requiring frequent retightening or specialized tools.
Specification Summary & Compliance
This 1/4"-20 UNC castle locknut features Class 2B thread fit for precision engagement and standard UNC coarse threading. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The nut accommodates 1/16" cotter pins with minimum slot dimensions of 0.09" depth and 0.07" width, ensuring reliable pin retention. Dimensions include 7/16" width and 9/32" height for standardized installation across industrial applications.
