fittings › boss nipples
MS21902D3
Military Standard Boss Nipple
Description
outside diameter: 3/16", union, flareless, aluminum alloy, MS21902 series fitting
Specifications
| Connection Style | External seat for gasket seal (boss) all ends |
|---|---|
| Connection Type | Threaded external boss all ends |
| Leg Length | 0.391 inches 2nd end, 0.410 inches 1st end |
| Material | Aluminum |
| Material Specification | T6 federal specification 2nd material response t62 or t851 federal specification 1st material response or qq-a-225/4 t6 qq-a-225/6 |
| Maximum Operating Pressure | 3000.0 pounds per square inch single response |
| Maximum Operating Temp | -65 degrees fahrenheit 1st response, 275 degrees fahrenheit 2nd response |
| Media For Which Designed | Gaseous 2nd response oxygen, Hydraulic fluid 1st response |
| Nominallength | 1.094 |
| Specification Data | 96906-ms21902 government standard |
| Style Designator | Flareless with center wrenching facility |
| Surface Treatment | Anodize |
| Surface Treatment Specification | Light tan military specification single treatment response cl 1 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 | 0.375 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 MS21902D3 — functionally equivalent.
- MS21902W3 Listed alternate 3/8 in · Aluminum
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Catalog data updated 2026-07-05. Report a data error