fittings › boss nipples
MS21900D10
Military Standard Boss Nipple
Description
outside diameter: 5/8", aluminum alloy 2024, adapter flareless tube to flared tube, MS21900 series fitting
Specifications
| Connection Style | External seat for gasket seal (boss) 2nd end, Flared w/ gasket seal (boss) 1st end |
|---|---|
| Connection Type | Threaded external boss all ends |
| End Application | Aircraft application |
| Material | Aluminum |
| Nominallength | 1.125 |
| Specification Data | 96906-ms21900 government standard |
| Style Designator | Flared and flareless w/ center wrenching facility |
| Surface Treatment | Zinc |
| Surface Treatment Specification | Class 1 federal specification single treatment response type 2 qq-z-325 |
| Thread Class | 3a all ends |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) all ends |
| Thread Size | 0.875 inches all ends |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
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Catalog data updated 2026-07-05. Report a data error