S-95307A800 2-56 MS21042-02 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through distorted thread locking technology, preventing loosening in high-stress environments
• Enhanced corrosion protection with cadmium yellow-chromate plating, extending service life in harsh conditions
• Precise thread engagement with Class 3B fit UNC coarse threads, ensuring reliable fastening performance
• Integrated flange design eliminates need for separate washers, distributing load evenly and reducing assembly time
• Standard external hex drive enables quick installation with common tools while maintaining secure locking capability
• Military specification compliance (MS21042-02) guarantees consistent quality and reliability for critical applications
• Right-hand coarse threading provides rapid installation and removal while maintaining strong holding power

Professional Applications & Engineering Value

This MS21042-02 certified flange lock nut delivers exceptional engineering value through its distorted thread locking mechanism that actively resists vibration-induced loosening - a critical concern in aerospace, automotive, and industrial machinery applications. The cadmium yellow-chromate plated steel construction provides dual protection against corrosion while maintaining the structural integrity required for demanding environments. The integrated flange design serves as a built-in washer, distributing clamp load over a wider surface area (0.167" diameter) to prevent damage to connected materials. With 2-56 UNC coarse threads and Class 3B fit, this hex flange nut ensures precise mating with male threads while the external hex drive facilitates efficient installation in confined spaces, making it ideal for assembly lines and maintenance operations where reliability and speed are paramount.

Specification Summary & Compliance

This flange lock nut features 2-56 UNC coarse threads with Class 3B fit precision tolerances and right-hand thread direction. The nut complies with military specification MS21042-02 and incorporates distorted thread locking technology for secure fastening. Manufacturing follows standardized dimensions including 1/8" width, 3/32" height, 0.167" flange diameter, and 0.01" flange thickness. The cadmium yellow-chromate plating on steel substrate provides corrosion resistance while meeting industry standards for external hex drive compatibility.