fittings › boss reducers
AN919-15D
Aeronautical Standard Boss Reducer
Description
Reducer
Specifications
| Alternate Item Number | AS5174D1008 1/ |
|---|---|
| Alternate Part Number | AS5174D1008 |
| Connection Style | Flared w/ gasket seal (boss) all ends |
| Connection Type | Flare Type, Threaded external boss all ends |
| Dimension E | 1.125 in |
| Dimension S | 51/64 in |
| Dimension W | 1 3/4 in |
| End Application | Aircraft fluid systems |
| Flare Angle | 37 º |
| Industry Standards/Certification | AN919 |
| Material | Aluminum |
| Material Specification | Qq-a-225/4 federal specification single material response |
| Maximum Operating Pressure | 3000.0 pounds per square inch single response |
| Maximum Operating Temp | 275.0 degrees fahrenheit single response |
| NIIN | 00-187-3588 |
| NSN | 4730-00-187-3588 |
| Nominallength | 1.750 |
| Specification Data | 88044-an919 government standard |
| Surface Treatment | Anodize |
| Thread Class | 3a all ends |
| Thread Series | UNF |
| Thread Series Designator | Unf (fine thread) 2nd end, Unjf (fine thread with external controlled root radius) 1st end |
| Thread Size | 0.750 inches 2nd end, 0.875 inches 1st end |
| Thread T (Large End (Reference)) | 7/8-14 |
| Thread T (Small End (Reference)) | 3/4-16 |
| Tube Outside Diameter (Large End) | 0.625 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 AN919-15D — functionally equivalent.
- AS5174D1008 Listed alternate 3/4 in · Aluminum
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Catalog data updated 2026-07-05. Report a data error