S-95307A500 1/4"-28 MS21042-4 Flange Nuts
Flange Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Flange Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance through distorted thread locking technology that maintains clamp force under dynamic loads
- Enhanced corrosion protection with cadmium yellow-chromate plating for extended service life in harsh environments
- Precision thread engagement with Class 3B fit ensuring reliable performance in critical applications
- Integrated flange design eliminates need for separate washers while providing superior load distribution
- Industry-standard compliance meeting MS21042-4 specifications for consistent quality and interchangeability
- Fine thread configuration (1/4"-28 UNF) delivers better tension control and superior holding power
- External hex drive enables easy installation with standard tools while maintaining secure locking capability
Professional Applications & Engineering Value
This flange lock nut combines distorted thread technology with cadmium yellow-chromate plating to solve critical vibration and corrosion challenges in demanding industrial environments. The integrated 0.42" flange distributes clamping force evenly, preventing surface damage while eliminating the need for additional washers. Engineered to MS21042-4 specifications with Class 3B thread fit, this 1/4"-28 UNF fine thread nut maintains consistent preload in high-vibration applications such as aerospace assemblies, heavy machinery, and automotive systems. The external hex drive ensures straightforward installation while the right-hand thread configuration provides reliable performance in standard fastening applications.
Specification Summary & Compliance
This flange lock nut features precision Class 3B thread fit with 1/4"-28 UNF fine threads and right-hand thread direction. Manufactured to MS21042-4 specifications with dimensions including 0.42" flange diameter, 0.04" flange thickness, 5/16" width, and 7/32" height. The cadmium yellow-chromate plated steel construction provides corrosion resistance while meeting industry standards for reliable performance in critical applications.
