The Filter,fluid, cataloged under National Stock Number 4330-00-720-4473, 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 Us Army Aviation and Missile Command. Government technical data includes 20 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-00-720-4473 |
| Primary Part Number | 9018433 |
| Item Name | Filter,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| First Discharge Thread Class | 2A A |
| Filtering Media Design | ENCASED SINGLE FILTERING MEDIA RESPONSE |
| First Discharge Connection Type | THREADED EXTERNAL TUBE TOP |
| Filtration Rating in Microns | 5.0 NOMINAL |
| First Intake Nominal Thread Size | 0.438 INCHES IN |
| First Intake Thread Series Designator | UNF |
| Design Type | REUSABLE |
| First Intake Thread Direction | RIGHT-HAND |
| Body Width | 0.813 INCHES NOMINAL IN |
| First Intake Connection Type | THREADED EXTERNAL TUBE END |
| First Intake Thread Class | 2A A |
| Operating Pressure | 900.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| First Discharge Nominal Thread Size | 0.562 INCHES IN |
| Filtering Element Quantity | 1 |
| Body Length | 3.920 INCHES NOMINAL IN |
| First Discharge Thread Direction | RIGHT-HAND |
| First Discharge Connection Relationship to Intake Connection | NOT IDENTICAL |
| Material | STEEL CORROSION RESISTING BODY |
| Material | STEEL CORROSION RESISTING FILTERING MEDIUM |
| First Discharge Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4330-00-720-4473 is a Filter,fluid, manufactured by Us Army Aviation and Missile Command, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-00-720-4473 has 3 manufacturer part numbers on file: 9018433 (Us Army Aviation and Missile Command), AC1977E41 (Pall Gmbh), AC1977E41 (Pall Aeropower Corporation).
Key specifications for 9018433: First Discharge Thread Class: 2A A; Filtering Media Design: ENCASED SINGLE FILTERING MEDIA RESPONSE; First Discharge Connection Type: THREADED EXTERNAL TUBE TOP; Filtration Rating in Microns: 5.0 NOMINAL. 20 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.