NSN 4730-00-640-5857
Part Details | BOSS REDUCER
4730-00-640-5857 A straight fitting having a boss connection of a different size at each end. Both connections have external or internal machine threads (straight threads other than pipe or hose series) and are designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. Excludes BUSHING (as modified).
Alternate Parts: ER919D104, ER919D10-4, MS21916D104, MS21916D10-4, MS21916D104, MS21916D10-4, AS21916, 4730-00-640-5857, 00-640-5857, 4730006405857, 006405857
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 47 | JAN 01, 1961 | 00-640-5857 | 23541 ( REDUCER, BOSS ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 4730-00-640-5857
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| ER919D10-4 | 79470 | DANA CORPWEATHERHEAD DIV |
| MS21916D10-4 | 96906 | MILITARY STANDARDSPROMULGATED BY MILITARY DEPARTMENTS |
| MS21916D10-4 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC |
| AS21916 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC |
Technical Data | NSN 4730-00-640-5857
| Characteristic | Specifications |
|---|---|
| NOMINAL OVERALL LENGTH | 1.438 INCHES |
| REDUCER TYPE | CONCENTRIC |
| SPECIAL FEATURES | WEAPON SYSTEM ESSENTIAL |
| SPECIFICATION/STANDARD DATA | 96906-MS21916 GOVERNMENT STANDARD |
| CRITICALITY CODE JUSTIFICATION | FEAT |
| END ITEM IDENTIFICATION | USED ON BOEING VERTOL MODEL CH-47 CARGO TRANSPORT HELICOPTER; HELLICOPTER, CHINOOK, CH-47 |