fittings › boss nipples
MS21902W6
Military Standard Boss Nipple
Description
Union
Specifications
| Alternate Part Number | MS21902D6 |
|---|---|
| Connection Style | External seat for gasket seal (boss) all ends |
| Connection Type | Threaded external boss all ends |
| Material | Aluminum |
| Material Specification | Qq-a-225/6,t6 or t62 or t851 fed spec 1st material response or qq-a-225/4,t6 fed spec 2nd material response |
| Maximum Operating Pressure | 3000.0 pounds per square inch single response |
| Maximum Operating Temp | -65.0 deg fahrenheit 2nd response, 275.0 deg fahrenheit 1st response |
| Media For Which Designed | Hydraulic fluid 1st response, Oxygen, gaseous 2nd response |
| NIIN | 00-289-6089 |
| NSN | 4730-00-289-6089 |
| Nominallength | 1.188 |
| Special Features | Rumman aerospace inc supports a10 aircraft |
| Specification Data | 96906-ms21902 government standard |
| Style Designator | Flareless (tube), Flareless w/ center wrenching facility |
| Surface Treatment | Anodize |
| Surface Treatment Specification | Mil-a-8625,ty 2,cl 1,tan mil spec single treatment response |
| Thread Class | 3a all ends |
| Thread Series Designator | Unjf all ends |
| Thread Size | 0.562 inches all ends |
| Weight | 0.025 lb |
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 MS21902W6 — functionally equivalent.
- MS21902D6 Listed alternate 9/16 in · Aluminum
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error