The Filter Element,fluid, cataloged under National Stock Number 4330-01-499-3645, 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 Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-499-3645 |
| Primary Part Number | ACO-21001R |
| Item Name | Filter Element,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division |
| Status | ACTIVE |
| Filtering Media Design | PLEATED SECOND FILTERING MEDIA RESPONSE |
| Filtering Media Design | LAYERED FIRST FILTERING MEDIA RESPONSE |
| Body Diameter | 2.625 INCHES NOMINAL IN |
| Body Overall Length | 9.750 INCHES NOMINAL IN |
| Filtration Rating in Microns | 5.0 NOMINAL |
| Flow Direction | OUTSIDE IN |
| Design Type | NONREUSABLE |
| Temp Rating | -40.0 FAHRENHEIT MINIMUM AND 160.0 FAHRENHEIT MAXIMUM DEGF |
| Style Designator | CYLINDRICAL W/OUT CONTAINER |
| Body Inside Diameter | 1.031 INCHES NOMINAL IN |
| Filtering System for Which Designed | FULL FLOW |
| Media for Which Designed | FUEL/OIL, HYDROCARBON |
| Material | RUBBER BUNA N SEAL |
| Material | FIBER SYNTHETIC 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 |
| Part Number | Manufacturer |
|---|---|
| ACO-21001P | Desmi Limited (GBR) |
| ACO-21001R | Parker Hannifin Gmbh Vertrieb Und Service (DEU) |
| ACO-21001R PRIMARY | Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division (USA) |
| Reference | Meaning |
|---|---|
| ACO-21001R | 5/9 Secondary reference Warner Lewis Gmbh |
| ACO-21001K | 5/9 Secondary reference Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division |
| ACO-21001P | 5/9 Secondary reference Warner Lewis Gmbh |
| ACO-21001L | 5/9 Secondary reference Warner Lewis Gmbh |
| ACO-21001L | 5/9 Secondary reference Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division |
NSN 4330-01-499-3645 is a Filter Element,fluid, manufactured by Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-499-3645 has 3 manufacturer part numbers on file: ACO-21001P (Desmi Limited), ACO-21001R (Parker Hannifin Gmbh Vertrieb Und Service), ACO-21001R (Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division).
Key specifications for ACO-21001R: Filtering Media Design: PLEATED SECOND FILTERING MEDIA RESPONSE; Filtering Media Design: LAYERED FIRST FILTERING MEDIA RESPONSE; Body Diameter: 2.625 INCHES NOMINAL IN; Body Overall Length: 9.750 INCHES NOMINAL IN. 14 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.