The Core Assembly,fluid Cooler, cataloged under National Stock Number 4420-01-319-5957, 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 Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-319-5957 |
| Primary Part Number | 894819 |
| Item Name | Core Assembly,fluid Cooler |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc |
| Status | ACTIVE |
| Style Designator | FINNED COILED TUBE |
| 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 |
|---|---|
| 6309956-132 | Naval Sea Systems Command (USA) |
| 894819 PRIMARY | Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| K894819 | C/1 Advisory reference — outside the item-of-supply concept Drs Environmental Systems Inc |
| K894819 | 5/9 Secondary reference Davey Compressor Co Div of Keco Industries Inc |
| 6309956 | D/9 Drawing number reference only Naval Sea Systems Command |
| K894819 | 3/9 Design control — primary reference Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. |
| K894819 | C/1 Advisory reference — outside the item-of-supply concept Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc |
NSN 4420-01-319-5957 is a Core Assembly,fluid Cooler, manufactured by Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-319-5957 has 2 manufacturer part numbers on file: 6309956-132 (Naval Sea Systems Command), 894819 (Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc).
3 possible matches (shared part number, not a government interchangeability claim): 4710-01-319-8071, 4420-01-320-2718, 4730-01-392-0371. Verify interchangeability with system specifications before substitution.
Key specifications for 894819: Style Designator: FINNED COILED TUBE; Special Features: AFTER COOLER; End Item Identification: COMPRESSOR,PNEUMATIC HIGH PRESSURE;3A4A7A2. 1 specification is 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.