The Pipe,air Conditioning-Heating, cataloged under National Stock Number 4520-01-376-1369, 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 Naval Sea Systems Command. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-376-1369 |
| Primary Part Number | 5750046-146 |
| Item Name | Pipe,air Conditioning-Heating |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Length | 61.000 INCHES NOMINAL IN |
| Shape | ROUND |
| Construction | SINGLE |
| Material | STEEL COMP 304 |
| Cross-Sectional Diameter | 2.500 INCHES NOMINAL IN |
| Material Thickness | 0.0490 INCHES IN |
| 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 |
|---|---|
| 5750046-146 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5750046 | D/9 Drawing number reference only Naval Sea Systems Command |
| 5750046-146 | 3/9 Design control — primary reference Textron Systems Corp |
NSN 4520-01-376-1369 is a Pipe,air Conditioning-Heating, manufactured by Naval Sea Systems Command, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-376-1369 has 1 manufacturer part number on file: 5750046-146 (Naval Sea Systems Command).
Key specifications for 5750046-146: Length: 61.000 INCHES NOMINAL IN; Shape: ROUND; Construction: SINGLE; Special Features: BEADED ENDS; HAS 20.0 DEG ANGLE. 6 specifications are documented in the U.S. Government catalog.
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.