The Pipe,air Conditioning-Heating, cataloged under National Stock Number 4520-01-444-7201, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is The Boeing Company. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Pipe,air Conditioning-Heating |
| FSC / FSG | 4520 — Space and Water Heating Equipment (FSG 45) |
| Manufacturers | Bell Boeing Joint Project Office (CAGE 3B1R2); Senior Uk Limited Div Senior Aerospace Bwt (CAGE K2962); The Boeing Company (CAGE 77272) |
| Parameter | Value |
|---|---|
| NSN | 4520-01-444-7201 |
| Primary Part Number | 901-325-526-103 |
| Item Name | Pipe,air Conditioning-Heating |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | The Boeing Company |
| 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 |
|---|---|
| 901-325-526-103 | Bell Boeing Joint Project Office (USA) |
| BWT11168-1 | Senior Uk Limited Div Senior Aerospace Bwt (GBR) |
| 901-325-526-103 PRIMARY | The Boeing Company (USA) |
| 901-325-526 | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 901-325-526-103 | 5/9 Secondary reference Senior Uk Limited Div Senior Aerospace Bwt |
NSN 4520-01-444-7201 is a Pipe,air Conditioning-Heating, manufactured by The Boeing Company, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-444-7201 has 4 manufacturer part numbers on file: 901-325-526-103 (Bell Boeing Joint Project Office), BWT11168-1 (Senior Uk Limited Div Senior Aerospace Bwt), 901-325-526-103 (The Boeing Company), 901-325-526 (The Boeing Company).
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.