The Filter Element,fluid, cataloged under National Stock Number 1650-01-072-5321, 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 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 7 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. 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 | 1650-01-072-5321 |
| Primary Part Number | 731085 |
| Item Name | Filter Element,fluid |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Filtering Media Design | PLEATED SINGLE FILTERING MEDIA RESPONSE |
| Body Diameter | 3.250 INCHES NOMINAL IN |
| Body Overall Length | 3.500 INCHES NOMINAL IN |
| Design Type | NONREUSABLE |
| Style Designator | CYLINDRICAL W/CLOSED ENDS |
| Body Inside Diameter | 1.500 INCHES NOMINAL IN |
| Media for Which Designed | FUEL/OIL, HYDROCARBON |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 1650-01-072-5321 is a Filter Element,fluid, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-072-5321 has 2 manufacturer part numbers on file: 731085 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), AC9806F30 (Pall Aeropower Corporation).
1 possible match (shared part number, not a government interchangeability claim): 2990-01-577-4779. Verify interchangeability with system specifications before substitution.
Key specifications for 731085: Filtering Media Design: PLEATED SINGLE FILTERING MEDIA RESPONSE; Body Diameter: 3.250 INCHES NOMINAL IN; Body Overall Length: 3.500 INCHES NOMINAL IN; Design Type: NONREUSABLE. 7 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.