The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-471-7739, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is The Boeing Company. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4720-01-471-7739 |
| Primary Part Number | 7-311830421-7 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Flow Angle | 45.0 DEGREES SECOND END |
| Measuring Method and Length | 18.120 INCHES NOMINAL WORKING IN |
| End Connection Design | ELBOW SECOND END |
| End Connection Design | STRAIGHT FIRST END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| 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 |
|---|---|
| 7-311830421-7 | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| A7288-4 | 3/2 Design control — primary reference U.S. Government activity |
| A7288-3 | 5/9 Secondary reference U.S. Government activity |
| 7-311830421-5 | 5/9 Secondary reference The Boeing Company |
| 7-311830421-5 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| 7-311830421 | 5/9 Secondary reference Program Manager Advanced Attack Helicopter Barcom Amcpm-Aah |
NSN 4720-01-471-7739 is a Hose Assembly,nonmetallic, manufactured by The Boeing Company, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-471-7739 has 1 manufacturer part number on file: 7-311830421-7 (The Boeing Company).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-596-5160. Verify interchangeability with system specifications before substitution.
Key specifications for 7-311830421-7: Flow Angle: 45.0 DEGREES SECOND END; Measuring Method and Length: 18.120 INCHES NOMINAL WORKING IN; End Connection Design: ELBOW SECOND END; End Connection Design: STRAIGHT FIRST END. 5 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.