fittings › boss reducers
MS21916J5-4
Military Standard Boss Reducer
Description
Fitting
Specifications
| Connection Style | External seat for gasket seal (boss) all ends |
|---|---|
| Connection Type | Threaded external boss all ends |
| Material | CRES |
| Material Specification | Cl 304 federal specification single material response body qq-s-763 |
| Nominallength | 1.156 |
| Specification Data | 96906-ms21916 government standard |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Mil-s-5002 military specification single treatment response inside, Type 2 military specification single treatment response outside e300 mil-f-14072 |
| Thread Class | 3a all ends |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) all ends |
| Thread Size | 0.438 inches 2nd end, 0.500 inches 1st end |
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS21916J5-4. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error