The Elbow,tube, cataloged under National Stock Number 4730-00-573-7057, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is United Aeronautical Corporation Dba United Aeronautical Corp. Government technical data includes 24 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-573-7057 |
| Primary Part Number | 2444882-501 |
| Item Name | Elbow,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | United Aeronautical Corporation Dba United Aeronautical Corp |
| Status | ACTIVE |
| Flange Shape | ROUND FIRST END BULKHEAD |
| Flow Angle | 90.0 DEGREES |
| Flange Face Design | PLAIN FIRST END BULKHEAD |
| Connection Style | FLARED (TUBE) ALL ENDS |
| Connection Style | GASKET SEAL (BOSS) INLET |
| Inlet Location | LOW HEEL SECOND INLET |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Connection Type | THREADED INTERNAL BOSS INLET |
| Connection Type | FLANGE FIRST END BULKHEAD |
| Material Document and Classification | QQ-A-225/4 T651 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 1.250 INCHES ALL ENDS IN |
| Leg Length | 2.000 INCHES NOMINAL SECOND END IN |
| Leg Length | 3.000 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 0.438 INCHES INLET IN |
| Nominal Thread Size | 1.625 INCHES ALL ENDS IN |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Nominal Outside Diameter | 2.812 INCHES FIRST END BULKHEAD IN |
| Thread Class | 3A ALL ENDS A |
| Thread Class | 3B INLET |
| Thread Quantity Per Inch | 12 ALL ENDS |
| Material | ALUMINUM ALLOY 2014 OVERALL |
| Thread Series Designator | UN ALL ENDS |
| Thread Series Designator | UNF INLET |
| Nominal Thickness | 0.100 INCHES FIRST END BULKHEAD IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2444882-501 PRIMARY | United Aeronautical Corporation Dba United Aeronautical Corp (USA) |
| 2444882-501 | Frazier Aviation Inc (USA) |
| Reference | Meaning |
|---|---|
| 2444882-501 | 5/9 Secondary reference The Boeing Company |
| 2444882-501 | 5/2 Secondary reference U.S. Government activity |
| 2444882-501 | 5/9 Secondary reference Consolidated Aeronautics Corp |
| 2444882 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-00-573-7057 is a Elbow,tube, manufactured by United Aeronautical Corporation Dba United Aeronautical Corp, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-573-7057 has 2 manufacturer part numbers on file: 2444882-501 (United Aeronautical Corporation Dba United Aeronautical Corp), 2444882-501 (Frazier Aviation Inc).
Key specifications for 2444882-501: Flange Shape: ROUND FIRST END BULKHEAD; Flow Angle: 90.0 DEGREES; Flange Face Design: PLAIN FIRST END BULKHEAD; Connection Style: FLARED (TUBE) ALL ENDS. 24 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.