The Pipe,air Conditioning-Heating, cataloged under National Stock Number 4520-01-194-3631, 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 Arrowhead Products Corp. The record lists 2 manufacturer part numbers 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.
| Item Name | Pipe,air Conditioning-Heating |
| FSC / FSG | 4520 — Space and Water Heating Equipment (FSG 45) |
| Manufacturers | Arrowhead Products Corp (CAGE 70628); Lockheed Martin Corp Electronics and Missiles Div (CAGE 09205) |
| Parameter | Value |
|---|---|
| NSN | 4520-01-194-3631 |
| Primary Part Number | 141504 |
| Item Name | Pipe,air Conditioning-Heating |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| 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) |
NSN 4520-01-194-3631 is a Pipe,air Conditioning-Heating, manufactured by Arrowhead Products Corp, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-194-3631 has 2 manufacturer part numbers on file: 141504 (Arrowhead Products Corp), 141504 (Lockheed Martin Corp Electronics and Missiles Div).
1 possible match (shared part number, not a government interchangeability claim): 3990-01-584-9521. 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.