The Cooler,fluid,industrial, cataloged under National Stock Number 4420-01-420-6550, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4420-01-420-6550 |
| Item Name | Cooler,fluid,industrial |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Status | ACTIVE |
| Length | 114.920 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZY |
| Style Designator | RIGHT ANGLE TUBE DISCHARGE |
| Height | 30.500 INCHES NOMINAL IN |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 700-D-8017 | 5/1 Secondary reference Aqua-Chem, Inc. |
| 700-8017L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 701-D-9614 | 5/1 Secondary reference Aqua-Chem, Inc. |
| 211035430 | 5/1 Secondary reference Naval Sea Systems Command |
| 211035430L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 701-D-9614L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 700-8017 | 3/1 Design control — primary reference Aqua-Chem, Inc. |
NSN 4420-01-420-6550 is a Cooler,fluid,industrial, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4420-01-466-3002. Verify interchangeability with system specifications before substitution.
Key specifications for 4420-01-420-6550: Length: 114.920 INCHES NOMINAL IN; Criticality Code Justification: ZZZY; Style Designator: RIGHT ANGLE TUBE DISCHARGE; Height: 30.500 INCHES NOMINAL IN. 5 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.