The Coupling,duct, cataloged under National Stock Number 5342-01-021-7484, is classified within Federal Supply Class 5342 (Hardware, Weapon System) of the Hardware and Abrasives group. The manufacturer of record is Arrowhead Products Corp. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | Coupling,duct |
| FSC / FSG | 5342 — Hardware, Weapon System (FSG 53) |
| Manufacturers | Arrowhead Products Corp (CAGE 70628) |
| Parameter | Value |
|---|---|
| NSN | 5342-01-021-7484 |
| Primary Part Number | 4451A1590M |
| Item Name | Coupling,duct |
| FSC / FSG | 5342 / 53 — Hardware, Weapon System |
| Manufacturer | Arrowhead Products Corp |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 4451A1590M PRIMARY | Arrowhead Products Corp (USA) |
| Reference | Meaning |
|---|---|
| 204-65552-17 | 7/2 Vendor item drawing reference U.S. Government activity |
| 4451-1590 | 5/9 Secondary reference Arrowhead Products Corp |
NSN 5342-01-021-7484 is a Coupling,duct, manufactured by Arrowhead Products Corp, classified under FSC 5342, Hardware, Weapon System. Status: active.
NSN 5342-01-021-7484 has 1 manufacturer part number on file: 4451A1590M (Arrowhead Products Corp).
1 possible match (shared part number, not a government interchangeability claim): 5342-01-529-8283. 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.