The Cup,fluid Filter, cataloged under National Stock Number 4330-01-378-0181, is classified within Federal Supply Class 4330 (Centrifugals, Separators, and Pressure and Vacuum Filters) of the Pumps and Compressors group. The manufacturer of record is Aqua-Chem, Inc. Dba Aqua-Chem Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4330-01-378-0181 |
| Primary Part Number | 843-07767-004 |
| Item Name | Cup,fluid Filter |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Aqua-Chem, Inc. Dba Aqua-Chem Inc |
| Status | ACTIVE |
| General Characteristics Item Description | BAKELITE PLASTIC; INTERNALLY THREADED |
| 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 |
|---|---|
| 843-07767-004 PRIMARY | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| 843-7767-004 | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| 333-7526 ITEM 4 | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| 843-0776/-004 | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| 843-7767-4 | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| Reference | Meaning |
|---|---|
| 843-7767-004 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 333-7526 | D/9 Drawing number reference only Aqua-Chem, Inc. |
| 843-7767-4 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 843-0776/-004 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 843-07767-004 | 3/9 Design control — primary reference Aqua-Chem, Inc. |
| 333-7526 ITEM 4 | 5/9 Secondary reference Aqua-Chem, Inc. |
NSN 4330-01-378-0181 is a Cup,fluid Filter, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-378-0181 has 5 manufacturer part numbers on file: 843-07767-004 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), 843-7767-004 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), 333-7526 ITEM 4 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), 843-0776/-004 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), 843-7767-4 (Aqua-Chem, Inc. Dba Aqua-Chem Inc).
1 possible match (shared part number, not a government interchangeability claim): 4330-01-378-0192. Verify interchangeability with system specifications before substitution.
Key specifications for 843-07767-004: General Characteristics Item Description: BAKELITE PLASTIC; INTERNALLY THREADED; Special Features: LOCATED ON TOP OF BOTTOM PLATE FOR FILTER ELEMENT POSITIONING; End Item Identification: SPRUANCE CLASS DD. 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.