fittings › boss nipples
MS21900-10
Military Standard Boss Nipple
Description
Outside diameter: 5/8", adapter, flareless tube to flared tube, carbon steel, 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 | Steel |
| Material Specification | 66 federal standard all material responses |
| Nominallength | 1.688 |
| Specification Data | 96906-ms21900 government standard |
| Style Designator | Flared and flareless w/ center wrenching facility |
| Surface Treatment | Cadmium |
| 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.
- MS21900-4
- MS21900-5
- MS21900-5D
- MS21900-6
- MS21900-8
- MS21900-10
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS21900-10. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error