The Filter,fluid, cataloged under National Stock Number 4330-01-021-9031, 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 Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-021-9031 |
| Primary Part Number | 22981-10-40 |
| Item Name | Filter,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div |
| Status | ACTIVE |
| Filtering Media Design | WOVEN SINGLE FILTERING MEDIA RESPONSE |
| Filtration Rating in Microns | 40.0 ABSOLUTE |
| First Intake Nominal Thread Size | 0.875 INCHES IN |
| First Intake Thread Series Designator | UNF |
| Design Type | NONREUSABLE |
| First Intake Thread Direction | RIGHT-HAND |
| First Intake Connection Type | THREADED EXTERNAL TUBE BACK |
| First Intake Thread Class | 2A A |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Filtering Element Quantity | 1 |
| Body Length | 1.856 INCHES NOMINAL IN |
| First Discharge Connection Relationship to Intake Connection | IDENTICAL TO FIRST INTAKE CONNECTION |
| Material | STEEL CORROSION RESISTING FILTERING MEDIUM |
| Mounting Type | INLET CONNECTION AND OUTLET CONNECTION END |
| 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 |
|---|---|
| 22981-10-40 PRIMARY | Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div (USA) |
NSN 4330-01-021-9031 is a Filter,fluid, manufactured by Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-021-9031 has 1 manufacturer part number on file: 22981-10-40 (Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div).
Key specifications for 22981-10-40: Filtering Media Design: WOVEN SINGLE FILTERING MEDIA RESPONSE; Filtration Rating in Microns: 40.0 ABSOLUTE; First Intake Nominal Thread Size: 0.875 INCHES IN; First Intake Thread Series Designator: UNF. 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.