The Filter,fluid, cataloged under National Stock Number 1650-01-031-5025, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. The manufacturer of record is Pall Aeropower Corporation. Government technical data includes 18 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 | 1650-01-031-5025 |
| Primary Part Number | AD-3258-10HM4 |
| Item Name | Filter,fluid |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Pall Aeropower Corporation |
| Status | ACTIVE |
| First Discharge Thread Class | 2A A |
| First Discharge Connection Type | THREADED INTERNAL TUBE HEAD |
| Filtration Rating in Microns | 5.0 NOMINAL |
| First Intake Nominal Thread Size | 0.875 INCHES IN |
| First Intake Thread Series Designator | UNF |
| Design Type | REUSABLE |
| First Intake Thread Direction | RIGHT-HAND |
| Body Width | 3.172 INCHES MINIMUM AND 3.202 INCHES MAXIMUM IN |
| Body Height | 2.330 INCHES MINIMUM AND 2.370 INCHES MAXIMUM IN |
| First Intake Connection Type | THREADED INTERNAL TUBE HEAD |
| First Intake Thread Class | 2A A |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| First Discharge Nominal Thread Size | 0.875 INCHES IN |
| Filtering Element Quantity | 1 |
| Body Length | 8.637 INCHES MAXIMUM IN |
| First Discharge Thread Direction | RIGHT-HAND |
| First Discharge Connection Relationship to Intake Connection | NOT IDENTICAL |
| 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 | N |
| Part Number | Manufacturer |
|---|---|
| AD-3258-10HM4 PRIMARY | Pall Aeropower Corporation (USA) |
NSN 1650-01-031-5025 is a Filter,fluid, manufactured by Pall Aeropower Corporation, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-031-5025 has 1 manufacturer part number on file: AD-3258-10HM4 (Pall Aeropower Corporation).
Key specifications for AD-3258-10HM4: First Discharge Thread Class: 2A A; First Discharge Connection Type: THREADED INTERNAL TUBE HEAD; Filtration Rating in Microns: 5.0 NOMINAL; First Intake Nominal Thread Size: 0.875 INCHES IN. 18 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.