The Filter,fluid, cataloged under National Stock Number 4330-01-168-9588, 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 Corporation. Government technical data includes 23 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 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 | 4330-01-168-9588 |
| Primary Part Number | AD-2661-24P2 |
| Item Name | Filter,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Pall Aeropower Corporation |
| Status | ACTIVE |
| Filtering Media Design | MESH SINGLE FILTERING MEDIA RESPONSE |
| Filtration Rating in Microns | 5.0 NOMINAL |
| Distance From Bottom of Body to Center of Inlet | 9.500 INCHES NOMINAL IN |
| First Intake Nominal Thread Size | 1.625 INCHES IN |
| First Intake Thread Series Designator | UN |
| Design Type | REUSABLE |
| Temp Rating | 150.0 FAHRENHEIT NOMINAL DEGF |
| First Intake Thread Direction | RIGHT-HAND |
| Body Width | 3.900 INCHES NOMINAL IN |
| First Intake Connection Type | THREADED INTERNAL TUBE HEAD SIDE |
| First Intake Thread Class | 2B |
| Style Designator | TEE TYPE (HYDRAULIC) |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Features Provided | AIR BLEED VALVE |
| Filtering Element Quantity | 1 |
| Body Length | 5.250 INCHES NOMINAL IN |
| Filtering System for Which Designed | FULL FLOW |
| First Discharge Connection Relationship to Intake Connection | IDENTICAL TO FIRST INTAKE CONNECTION |
| Differential Pressure | ERR-060 |
| Media for Which Designed | AIR |
| Material | STEEL CORROSION RESISTING BODY |
| First Intake Thread Quantity Per Inch | 12 |
| Mounting Type | INLET CONNECTION AND OUTLET CONNECTION HEAD SIDE |
| 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 |
|---|---|
| AD2661-24P2 | Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div (USA) |
| AD-2661-24P2 PRIMARY | Pall Aeropower Corporation (USA) |
NSN 4330-01-168-9588 is a Filter,fluid, manufactured by Pall Aeropower Corporation, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-168-9588 has 2 manufacturer part numbers on file: AD2661-24P2 (Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div), AD-2661-24P2 (Pall Aeropower Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 4330-01-169-4961, 4330-01-169-5000. Verify interchangeability with system specifications before substitution.
Key specifications for AD-2661-24P2: Filtering Media Design: MESH SINGLE FILTERING MEDIA RESPONSE; Filtration Rating in Microns: 5.0 NOMINAL; Distance From Bottom of Body to Center of Inlet: 9.500 INCHES NOMINAL IN; First Intake Nominal Thread Size: 1.625 INCHES IN. 23 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.