fittings › boss reducers
AN919-1
Steel Reducer
Description
Reducer
Specifications
| Alternate Item Number | AS5174-0402 |
|---|---|
| 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 | Steel |
| Material Specification | Qq-s-637 fed spec single material response or mil-s-6758 mil spec single material response and mil-s-5626 mil spec single material response |
| Maximum Operating Pressure | 3000.0 pounds per square inch single response |
| NIIN | 00-804-1906 |
| NSN | 4730-00-804-1906 |
| Nominallength | 1.250 |
| Size No. Alum | 1D |
| Size No. Steel | 1 |
| Specification Data | 96906-ms24399 government standard and 81349-mil-5509 government specification |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416,type 2,class 2 fed spec single treatment response |
| Thread Class | 3a all ends |
| Thread Series Designator | Unjf 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 O.D. | 1/4 1/8 |
| 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 AN919-1. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error