The Hose,air Duct, cataloged under National Stock Number 4720-01-471-5366, 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. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-471-5366 |
| Primary Part Number | 7-511A21568-31 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| DOU1143-0031 | Flexfab Llc (USA) |
| 7-511A21568-31 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 7-511A21568-31 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 4720-01-471-5366 is a Hose,air Duct, manufactured by The Boeing Company, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-471-5366 has 2 manufacturer part numbers on file: DOU1143-0031 (Flexfab Llc), 7-511A21568-31 (The Boeing Company).
Key specifications for 7-511A21568-31: End Item Identification: APACHE ATTACK HELICOPTER, MODEL AH 64. 0 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.
NSN 4720-01-471-5366 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.