The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 2540-01-559-2020, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. The manufacturer of record is Pierce Manufacturing Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 2540 — Vehicular Furniture and Accessories (FSG 25) |
| Manufacturers | Pierce Manufacturing Inc (CAGE 04664) |
| Parameter | Value |
|---|---|
| NSN | 2540-01-559-2020 |
| Primary Part Number | 1590077 |
| Item Name | Duct Assembly,air Conditioning-H |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Manufacturer | Pierce Manufacturing Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 1590077 PRIMARY | Pierce Manufacturing Inc (USA) |
NSN 2540-01-559-2020 is a Duct Assembly,air Conditioning-H, manufactured by Pierce Manufacturing Inc, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-01-559-2020 has 1 manufacturer part number on file: 1590077 (Pierce Manufacturing Inc).
1 possible match (shared part number, not a government interchangeability claim): 6550-01-693-4329. Verify interchangeability with system specifications before substitution.
Possible hazard — SDS may be required (DLA HMIC P). 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.