The Hose,air Duct, cataloged under National Stock Number 4720-01-477-4063, 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 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4720-01-477-4063 |
| Primary Part Number | 7-511A21569-37 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Minimum Inside Bending Radius | 1.500 INCHES IN |
| Connection Type | PREFORMED FIRST END |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| 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 |
|---|---|
| BWT10-2240050G | Bull Hn Information Systems Inc (USA) |
| 7-511A21569-37 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 7-511A21569 | D/9 Drawing number reference only The Boeing Company |
NSN 4720-01-477-4063 is a Hose,air Duct, manufactured by The Boeing Company, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-477-4063 has 2 manufacturer part numbers on file: BWT10-2240050G (Bull Hn Information Systems Inc), 7-511A21569-37 (The Boeing Company).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-616-7574. Verify interchangeability with system specifications before substitution.
Key specifications for 7-511A21569-37: Minimum Inside Bending Radius: 1.500 INCHES IN; Connection Type: PREFORMED FIRST END; Style Designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED; End Item Identification: 15200013558250 HELICOPTER ATTACH AH-64D. 3 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.