The Hose Assembly,air Duct, cataloged under National Stock Number 4720-01-726-0422, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Chase Supply, Inc. Dba Chase Defense Partners. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Hose Assembly,air Duct |
| FSC / FSG | 4720 — Hose and Flexible Tubing (FSG 47) |
| Manufacturers | Chase Supply, Inc. Dba Chase Defense Partners (CAGE 1RZM1) |
| Parameter | Value |
|---|---|
| NSN | 4720-01-726-0422 |
| Primary Part Number | 405450 |
| Item Name | Hose Assembly,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Chase Supply, Inc. Dba Chase Defense Partners |
| 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 |
|---|---|
| 405450 PRIMARY | Chase Supply, Inc. Dba Chase Defense Partners (USA) |
| Reference | Meaning |
|---|---|
| 1013816 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4720-01-726-0422 is a Hose Assembly,air Duct, manufactured by Chase Supply, Inc. Dba Chase Defense Partners, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-726-0422 has 1 manufacturer part number on file: 405450 (Chase Supply, Inc. Dba Chase Defense Partners).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-726-1255. Verify interchangeability with system specifications before substitution.
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.