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MS21914-4
Military Standard Tube Cap
Description
outside diameter: 1/4", pressure seal, flareless tube, carbon steel, MS21914 series fitting
Specifications
| Connection Style | Pressure seal flareless |
|---|---|
| End Application | Model ch-47 used on boeing vertol cargo transport helicopter aircraft application |
| Material | Steel |
| Material Specification | Qq-s-637 federal specification single material response or astm a576-67t assn standard single material response or mil-s-6758 military specification single material response |
| Special Features | A-10 aircraft model grumman aircraft corp |
| Specification Data | 96906-ms21914 government standard |
| Style Designator | Flareless tube cap |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Class 2 federal specification single treatment response type 2 qq-p-416 |
| Thread Class | 3b internal |
| Thread Direction | Right-hand internal |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 external |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) external |
| Thread Size | 0.438 inches internal |
| Tube Outside Diameter For Which Designed | 0.250 |
Cross-reference
Interchangeable
Parts that share a National Stock Number or are listed as an alternate for MS21914-4 — functionally equivalent.
- MS21914V4P Listed alternate 7/16 in · CRES
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Catalog data updated 2026-07-05. Report a data error