fittings › boss reducers
AN919-19
Aeronautical Standard Boss Reducer
Description
Reducer
Specifications
| Alternate Item Number | AS5174-1208 |
|---|---|
| Alternate Part Number | AS5174-1208 |
| Connection Style | Flared w/ gasket seal (boss) all ends |
| Connection Type | Flare Type, Threaded external boss all ends |
| Dimension E | 1.375 in |
| Dimension S | 57/64 in |
| Dimension W | 1 57/64 in |
| Flare Angle | 37 º |
| Industry Standards/Certification | AN919 |
| Material | Steel |
| NIIN | 00-235-1510 |
| NSN | 4730-00-235-1510 |
| Nominallength | 1.891 |
| Specification Data | 88044-an919 government standard |
| Surface Treatment | Cadmium |
| Thread Class | 3a all ends |
| Thread Qty Per Inch (tpi) | 12 1st end |
| Thread Series Designator | Un 1st end, Unf 2nd end |
| Thread Size | 0.750 inches 2nd end, 1.062 inches 1st end |
| Thread T (Large End (Reference)) | 1 1/16-12 |
| Thread T (Small End (Reference)) | 3/4-16 |
| Tube Outside Diameter (Large End) | 0.750 in |
| Tube Outside Diameter (Small End) | 1/2 in |
| Weight | .005 lb |
Cross-reference
Interchangeable
Parts that share a National Stock Number or are listed as an alternate for AN919-19 — functionally equivalent.
- AS5174-1208 Listed alternate 3/4-12 · Steel
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Catalog data updated 2026-07-05. Report a data error