The Cooler,fluid,industrial, cataloged under National Stock Number 4420-01-145-6556, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Aqua-Chem, Inc. Dba Aqua-Chem Inc. Government technical data includes 9 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4420-01-145-6556 |
| Primary Part Number | 700-7937 |
| Item Name | Cooler,fluid,industrial |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Aqua-Chem, Inc. Dba Aqua-Chem Inc |
| Status | ACTIVE |
| Material Document and Classification | ASTM A51 ASSN STD SINGLE MATERIAL RESPONSE SHELL |
| Material Document and Classification | ASTM B111 ASSN STD SINGLE MATERIAL RESPONSE TUBES |
| Material Document and Classification | ASTM B171 ASSN STD SINGLE MATERIAL RESPONSE TUBE SHEET |
| Tube Attachment Method | EXPANDED BOTH ENDS |
| Tubing Outside Diameter | 0.625 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Nondefinitive Spec/std Data | A TYPE AND 5 CLASS |
| Material | STEEL SHELL |
| Material | COPPER ALLOY TUBES |
| Material | COPPER ALLOY TUBE SHEET |
| 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 |
|---|---|
| 700-7937 PRIMARY | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| Reference | Meaning |
|---|---|
| MIL-C-15730TYPEACLASS5 | 5/1 Secondary reference U.S. Government activity |
| 4420PL1752613 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 700-7937 | 3/9 Design control — primary reference Aqua-Chem, Inc. |
| MIL-C-15730 | 4/1 Identification reference U.S. Government activity |
NSN 4420-01-145-6556 is a Cooler,fluid,industrial, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-145-6556 has 1 manufacturer part number on file: 700-7937 (Aqua-Chem, Inc. Dba Aqua-Chem Inc).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-208-3073. Verify interchangeability with system specifications before substitution.
Key specifications for 700-7937: Material Document and Classification: ASTM A51 ASSN STD SINGLE MATERIAL RESPONSE SHELL; Material Document and Classification: ASTM B111 ASSN STD SINGLE MATERIAL RESPONSE TUBES; Material Document and Classification: ASTM B171 ASSN STD SINGLE MATERIAL RESPONSE TUBE SHEET; Tube Attachment Method: EXPANDED BOTH ENDS. 9 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.