The Filter Element,fluid, cataloged under National Stock Number 4330-01-477-5434, 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 Norgren C a Co. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4330-01-477-5434 |
| Primary Part Number | 4438-03 |
| Item Name | Filter Element,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Norgren C a Co |
| Status | ACTIVE |
| Filtering Media Design | AIR SOCK SINGLE FILTERING MEDIA RESPONSE |
| Filtration Rating in Microns | 40.0 NOMINAL |
| Flow Direction | OUTSIDE IN |
| Drop Pressure | ERR-060 |
| Temp Rating | -20.0 CELSIUS MINIMUM AND 50.0 CELSIUS MAXIMUM DEGC |
| Media for Which Designed | AIR |
| Material | ALUMINUM BODY |
| Material | PLASTIC POLYCARBONATE AND ALUMINUM SEDIMENT BOWL |
| 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 |
|---|---|
| 4438-03 | Factair Limited (GBR) |
| 4438-03 PRIMARY | Norgren C a Co (USA) |
| Reference | Meaning |
|---|---|
| 4ZK55 | 5/1 Secondary reference W.w. Grainger, Inc. Div Government Sales Division |
| 4330PL1682952 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 4330-01-477-5434 is a Filter Element,fluid, manufactured by Norgren C a Co, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-477-5434 has 2 manufacturer part numbers on file: 4438-03 (Factair Limited), 4438-03 (Norgren C a Co).
2 possible matches (shared part number, not a government interchangeability claim): 4330-01-491-0571, 5950-01-499-7381. Verify interchangeability with system specifications before substitution.
Key specifications for 4438-03: Filtering Media Design: AIR SOCK SINGLE FILTERING MEDIA RESPONSE; Filtration Rating in Microns: 40.0 NOMINAL; Flow Direction: OUTSIDE IN; Drop Pressure: ERR-060. 8 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.