The Hose,air Duct, cataloged under National Stock Number 4720-00-720-1865, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Flexible Technologies Inc. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 — Hose and Flexible Tubing (FSG 47) |
| Manufacturers | Northrop Grumman Systems Corporation (CAGE 26512); Flexible Technologies Inc (CAGE 30299); Hbd Industries, Inc Div Hbd/thermoid Inc (CAGE 21868) |
| Parameter | Value |
|---|---|
| NSN | 4720-00-720-1865 |
| Primary Part Number | FT-2021-3-22 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Flexible Technologies Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| GH12A-3-22 | Northrop Grumman Systems Corporation (USA) |
| FT-2021-3-22 PRIMARY | Flexible Technologies Inc (USA) |
| FT-337B-3-22 PRIMARY | Flexible Technologies Inc (USA) |
| FT-2022-3-22 PRIMARY | Flexible Technologies Inc (USA) |
| AD-1109-3-22 PRIMARY | Hbd Industries, Inc Div Hbd/thermoid Inc (USA) |
| Reference | Meaning |
|---|---|
| FT-337B | D/9 Drawing number reference only Flexible Technologies Inc |
| GH12A | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
| FT-337A-3-22 | 5/9 Secondary reference Flexible Technologies Inc |
| FT-2021 | D/9 Drawing number reference only Flexible Technologies Inc |
NSN 4720-00-720-1865 is a Hose,air Duct, manufactured by Flexible Technologies Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-720-1865 has 5 manufacturer part numbers on file: GH12A-3-22 (Northrop Grumman Systems Corporation), FT-2021-3-22 (Flexible Technologies Inc), FT-337B-3-22 (Flexible Technologies Inc), FT-2022-3-22 (Flexible Technologies Inc), AD-1109-3-22 (Hbd Industries, Inc Div Hbd/thermoid Inc).
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.