S-95154A110 4-40 MS21044-N04 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 with a durable nylon insert that locks securely in place, preventing loosening under dynamic loads.
- Enhanced corrosion protection from cadmium yellow-chromate plating, ideal for harsh industrial environments.
- High-temperature tolerance up to 250°F, ensuring reliable performance in demanding applications.
- Precision thread fit with Class 3B UNC coarse threads for easy assembly and consistent, secure fastening.
- Standard external hex design for straightforward installation using common tools, improving efficiency.
- Compliance with MS21044-N04 standards for guaranteed quality and interoperability in aerospace and industrial uses.
- Compact dimensions (1/4" width, 5/32" height) for space-constrained assemblies without sacrificing strength.
Professional Applications & Engineering Value
This 4-40 nylon insert lock nut is engineered to address critical challenges in high-vibration and precision-driven sectors. The cadmium yellow-chromate plated steel construction provides excellent corrosion resistance, extending service life in exposed or corrosive settings like outdoor machinery or aircraft assemblies. The nylon insert effectively dampens vibrations, reducing the risk of fastener failure in moving parts, while the UNC coarse thread and Class 3B fit ensure quick, accurate installation with minimal cross-threading. Ideal for industrial locknuts in automotive, aerospace, and electronics, it maintains integrity up to 250°F, offering a reliable solution for temperature-sensitive applications where safety and durability are paramount.
Specification Summary & Compliance
This locknut features a 4-40 UNC coarse thread with Class 3B thread fit for precise engagement, adhering to MS21044-N04 specifications. It includes a right-hand thread direction, external hex drive, and dimensions of 1/4" width and 5/32" height. The product meets industry standards for performance and is manufactured with materials compliant with RoHS and REACH environmental directives, ensuring safe and sustainable use in engineering applications.
