The Filter,fluid, cataloged under National Stock Number 1650-01-184-9865, 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 Donaldson Company, Inc.. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-01-184-9865 |
| Primary Part Number | 522-138 |
| Item Name | Filter,fluid |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Donaldson Company, Inc. |
| Status | ACTIVE |
| Filtering Media Design | SINGLE STACKED DISKS FIRST FILTERING MEDIA RESPONSE |
| Distance From Bottom of Body to Center of Inlet | 23.500 INCHES NOMINAL IN |
| Drop Pressure | ERR-060 |
| Design Type | LIMITED |
| First Intake Flange Thickness | 1.250 INCHES NOMINAL IN |
| First Intake Flange Outside Diameter | 7.150 INCHES NOMINAL IN |
| Body Height | 29.250 INCHES NOMINAL IN |
| First Intake Connection Type | PLAIN FACE FLANGE UPPER SIDE |
| Style Designator | STRAIGHT FLOW BASKET STRAINER W/CLAMPED COVER |
| Operating Pressure | 1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| First Intake Flange Shape Style | ROUND W/UNTHREADED BOLT HOLES |
| Body Length | 19.500 INCHES NOMINAL IN |
| First Discharge Connection Relationship to Intake Connection | IDENTICAL TO FIRST INTAKE CONNECTION |
| Media for Which Designed | FUEL/OIL, HYDROCARBON |
| Material | STEEL CORROSION RESISTING FILTERING MEDIUM |
| Rotating Device Type | BLADE |
| 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 |
|---|---|
| 522-138 PRIMARY | Donaldson Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 505818-1 | 7/9 Vendor item drawing reference Spiveco Inc |
NSN 1650-01-184-9865 is a Filter,fluid, manufactured by Donaldson Company, Inc., classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-184-9865 has 1 manufacturer part number on file: 522-138 (Donaldson Company, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4330-01-348-9551. Verify interchangeability with system specifications before substitution.
Key specifications for 522-138: Filtering Media Design: SINGLE STACKED DISKS FIRST FILTERING MEDIA RESPONSE; Distance From Bottom of Body to Center of Inlet: 23.500 INCHES NOMINAL IN; Drop Pressure: ERR-060; Design Type: LIMITED. 16 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.