S-91831A137 1/2"-13 Locknuts
Locknuts
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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
- Superior vibration resistance through nylon insert locking mechanism for secure fastening in high-motion applications
- Excellent corrosion resistance with 18-8 stainless steel construction for extended service life in harsh environments
- Reliable high-temperature performance with nylon insert rated up to 220°F for thermal stability
- Precise thread engagement with UNC coarse threads and Class 2B fit ensuring consistent installation
- Industry-standard compatibility with standard 3/4" hex profile for easy installation using common tools
- Environmental compliance meeting RoHS 3 and REACH standards for global industrial use
- Optimized dimensional stability with 19/32" height providing balanced strength-to-weight ratio
Professional Applications & Engineering Value
This nylon insert lock nut delivers critical vibration-resistant performance for demanding industrial applications where secure fastening is paramount. Engineered with 18-8 stainless steel, it provides exceptional corrosion resistance in harsh environments including marine, chemical processing, and outdoor installations. The UNC coarse threads with Class 2B fit ensure reliable engagement and disengagement while the nylon insert creates consistent locking force without damaging mating threads. The external hex drive design allows for high-torque installation using standard wrenches, making it ideal for machinery, automotive assemblies, and structural applications where vibration-induced loosening poses operational risks. With temperature resistance up to 220°F, this locknut maintains performance in moderate thermal cycling conditions common in industrial equipment.
Specification Summary & Compliance
This lock nut features precision 1/2"-13 UNC coarse threads with Class 2B fit for consistent thread engagement. Manufactured to industry standards with external hex drive (3/4" width) and standard profile (19/32" height). Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications requiring restricted substance compliance.
