fittings › boss reducers
AN919-1J
Aeronautical Standard Boss Reducer
Description
Reducer
Specifications
| Alternate Item Number | AS5174J0402 |
|---|---|
| Connection Style | Flared w/ gasket seal (boss) all ends |
| Connection Type | Flare Type, Threaded external boss all ends |
| Dimension E | 0.688 in |
| Dimension S | 11/16 in |
| Dimension W | 1 1/4 in |
| Flare Angle | 37 º |
| Industry Standards/Certification | AN919 |
| Material | CRES |
| Material Specification | 66 federal standard single material response |
| NIIN | 00-698-4043 |
| NSN | 4730-00-698-4043 |
| Nominallength | 1.250 |
| Part Name Assigned By Controlling Agency | Flared union and reducer fitting |
| Specification Data | 88044-an919 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 | UNF |
| Thread Series Designator | Unf (fine thread) all ends |
| Thread Size | 0.312 inches 2nd end, 0.438 inches 1st end |
| Thread T (Large End (Reference)) | 7/16-20 |
| Thread T (Small End (Reference)) | 5/16-24 |
| Tube Outside Diameter (Large End) | 0.250 in |
| Tube Outside Diameter (Small End) | 1/8 in |
| Weight | 0.045 lb |
Cross-reference
No interchangeable or dimensionally similar parts are on record for AN919-1J. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error