The Filter Element,fluid, cataloged under National Stock Number 4330-01-331-2950, is classified within Federal Supply Class 4330 (Centrifugals, Separators, and Pressure and Vacuum Filters) of the Pumps and Compressors group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4330-01-331-2950 |
| Item Name | Filter Element,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Status | ACTIVE |
| Filtration Rating in Microns | 18.0 ABSOLUTE |
| Flow Direction | OUTSIDE IN |
| Design Type | NONREUSABLE |
| Style Designator | CYLINDRICAL W/OUT CONTAINER |
| Filtering System for Which Designed | FULL FLOW |
| Media for Which Designed | AIR |
| Material | NICKEL ALLOY OR STEEL CORROSION RESISTING FILTERING MEDIUM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 194712 | 3/2 Design control — primary reference U.S. Government activity |
| 236287 ITEM 91 | 5/2 Secondary reference U.S. Government activity |
NSN 4330-01-331-2950 is a Filter Element,fluid, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 1670-01-334-5451. Verify interchangeability with system specifications before substitution.
Key specifications for 4330-01-331-2950: Filtration Rating in Microns: 18.0 ABSOLUTE; Flow Direction: OUTSIDE IN; Design Type: NONREUSABLE; Style Designator: CYLINDRICAL W/OUT CONTAINER. 7 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.