The Coupling,tube, cataloged under National Stock Number 4730-00-019-8449, 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 The Boeing Company Div Defense. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-019-8449 |
| Primary Part Number | 32-50155-5 |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Connection Style | FLARED (TUBE) SECOND END |
| Connection Style | SOCKET W/ FLARE (TUBE) FIRST END |
| Nominal Outside Diameter Tube Accommodated | 0.249 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.249 INCHES SECOND END IN |
| Seat Angle | 45.0 DEGREES SECOND END |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 32-50155-5 PRIMARY | The Boeing Company Div Defense (USA) |
| 32-50155-5 | Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company (USA) |
| 32-50155-5 | Kitco Llc (USA) |
| Reference | Meaning |
|---|---|
| 32-50155 | D/9 Drawing number reference only The Boeing Company Div Defense |
NSN 4730-00-019-8449 is a Coupling,tube, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-019-8449 has 3 manufacturer part numbers on file: 32-50155-5 (The Boeing Company Div Defense), 32-50155-5 (Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company), 32-50155-5 (Kitco Llc).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-503-6836. Verify interchangeability with system specifications before substitution.
Key specifications for 32-50155-5: Connection Style: FLARED (TUBE) SECOND END; Connection Style: SOCKET W/ FLARE (TUBE) FIRST END; Nominal Outside Diameter Tube Accommodated: 0.249 INCHES FIRST END IN; Nominal Outside Diameter Tube Accommodated: 0.249 INCHES SECOND END IN. 6 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.