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MS21902W8
Military Standard Boss Nipple
Description
aluminum alloy 7075, tube outside 1/2", union, flareless tube
Specifications
| Connection Style | External seat for gasket seal (boss) all ends |
|---|---|
| Connection Type | Threaded external boss all ends |
| End Application | Viking s-3a 16n aircraft |
| Leg Length | 0.562 inches all ends |
| Material | Aluminum |
| Material Specification | T3 federal specification single material response or qq-a-367 t73 federal specification single material response qq-a-225/9 |
| Maximum Operating Pressure | 3000.0 pounds per square inch single response |
| Media For Which Designed | Hydraulic fluid single response |
| Nominallength | 1.375 |
| Specification Data | 81343-as18280 professional/industrial association specification |
| Style Designator | Flareless w/ center wrenching facility |
| Surface Treatment | Anodize |
| Surface Treatment Specification | Class 2 military specification single treatment response type 2 mil-a-8625 |
| Thread Class | 3a all ends |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) all ends |
| Thread Size | 0.750 inches all ends |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
Interchangeable
Parts that share a National Stock Number or are listed as an alternate for MS21902W8 — functionally equivalent.
- MS21902D8 Listed alternate 3/4 in · Aluminum
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Catalog data updated 2026-07-05. Report a data error