The Hose,air Duct, cataloged under National Stock Number 4720-00-446-0744, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Honeywell International Inc. Div Aerospace - Torrance. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-00-446-0744 |
| Primary Part Number | 377580-3 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Measuring Method and Length | 3.500 INCHES NOMINAL OVERALL IN |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Material | FIBERGLASS SINGLE PLY |
| 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 |
|---|---|
| 377580-3 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| Reference | Meaning |
|---|---|
| 377580-3 | 3/2 Design control — primary reference U.S. Government activity |
| 377580-3 | 5/9 Secondary reference Alliedsignal Inc Dba Allied-Signal Aerospace Co |
NSN 4720-00-446-0744 is a Hose,air Duct, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-446-0744 has 1 manufacturer part number on file: 377580-3 (Honeywell International Inc. Div Aerospace - Torrance).
Key specifications for 377580-3: Measuring Method and Length: 3.500 INCHES NOMINAL OVERALL IN; Style Designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED; Material: FIBERGLASS SINGLE PLY. 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.