The Filter,fluid, cataloged under National Stock Number 4330-01-378-5406, 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 24 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4330-01-378-5406 |
| Primary Part Number | 333-7527 |
| Item Name | Filter,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Aqua-Chem, Inc. Dba Aqua-Chem Inc |
| Status | ACTIVE |
| First Discharge Connection Type | PLAIN FACE FLANGE SIDE NEAR TOP |
| Second Intake Nominal Inside Diameter | 1.500 INCHES IN |
| Filtration Rating in Microns | 5.000 NOMINAL |
| Distance From Bottom of Body to Center of Inlet | 7.000 INCHES NOMINAL IN |
| Design Type | REUSABLE |
| Body Outside Diameter | 12.500 INCHES NOMINAL IN |
| First Intake Flange Outside Diameter | 6.000 INCHES NOMINAL IN |
| Body Height | 27.500 INCHES NOMINAL IN |
| Supplementary Features | USED ON WEAPON SYSTEM CODE FB, SPRUANCE CLASS DD L9 |
| First Intake Connection Type | PLAIN FACE FLANGE SIDE |
| Style Designator | LEG MOUNTED BODY AND COVER ASSY (SWING BOLTED) |
| Features Provided | DRAIN PLUG |
| First Intake Flange Shape Style | ROUND W/UNTHREADED BOLT HOLES |
| Filtering Element Quantity | 6 |
| Filtering System for Which Designed | FULL FLOW |
| First Discharge Connection Relationship to Intake Connection | NOT IDENTICAL |
| Media for Which Designed | WATER |
| Bracket Quantity | 1 |
| First Discharge Flange Face Style | PLAIN |
| Material | RUBBER BUNA N SEAL |
| Material | STEEL COMP 316 AND STEEL COMP 316L BODY |
| Mounting Type | BRACKET BASE |
| First Intake Flange Face Style | PLAIN |
| First Discharge Flange Shape Style | ROUND W/UNTHREADED BOLT HOLES |
| 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 |
|---|---|
| 333-07527-000 | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| 333-7527 PRIMARY | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| Reference | Meaning |
|---|---|
| 333-07527-000 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 333-7527 | 3/9 Design control — primary reference Aqua-Chem, Inc. |
NSN 4330-01-378-5406 is a Filter,fluid, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-378-5406 has 2 manufacturer part numbers on file: 333-07527-000 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), 333-7527 (Aqua-Chem, Inc. Dba Aqua-Chem Inc).
1 possible match (shared part number, not a government interchangeability claim): 4330-01-378-6210. Verify interchangeability with system specifications before substitution.
Key specifications for 333-7527: First Discharge Connection Type: PLAIN FACE FLANGE SIDE NEAR TOP; Second Intake Nominal Inside Diameter: 1.500 INCHES IN; Filtration Rating in Microns: 5.000 NOMINAL; Distance From Bottom of Body to Center of Inlet: 7.000 INCHES NOMINAL IN. 24 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.