fittings › boss nipples
MS21900W5
Military Standard Boss Nipple
Description
aluminum alloy 7075, tube outside 5/16", adapter flareless tube to flared tube
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 |
| Material Specification | T6 federal specification single material response qq-a-225/6 |
| Nominallength | 1.156 |
| Specification Data | 96906-ms21900 government standard and 81349-mil-f-18280 government specification |
| Style Designator | Flared and flareless w/ center wrenching facility |
| Surface Treatment | Anodize |
| Surface Treatment Specification | Mil-a-8625 military specification single treatment response inside, Mil-a-8625 military specification single treatment response outside |
| Thread Class | 3a all ends |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) all ends |
| Thread Size | 0.500 inches all ends |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- MS21900W4
- MS21900W5
- MS21900W8
- MS21900W10
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS21900W5. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error