fittings › boss nipples
MS21900-5D
Military Standard Boss Nipple
Description
Boss Nipple
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 |
| Material | Aluminum |
| Material Specification | Qq-a-225/6,t6 fed spec single material response |
| 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 mil spec single treatment response inside, Mil-a-8625 mil spec single treatment response outside |
| Thread Class | 3a all ends |
| Thread Series Designator | Unjf 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.
- MS21900-4
- MS21900-5
- MS21900-5D
- MS21900-6
- MS21900-8
- MS21900-10
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS21900-5D. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error