The Cooler,hydraulic Oil,aircraft, cataloged under National Stock Number 1650-01-302-0181, 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 Ametek Thermal Systems Inc. Government technical data includes 1 specification, 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 | 1650-01-302-0181 |
| Primary Part Number | 11634-000 |
| Item Name | Cooler,hydraulic Oil,aircraft |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Ametek Thermal Systems Inc |
| Status | ACTIVE |
| Material | ALUMINUM ALLOY ENCLOSURE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 1650-01-302-0181 is a Cooler,hydraulic Oil,aircraft, manufactured by Ametek Thermal Systems Inc, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-302-0181 has 2 manufacturer part numbers on file: 50490 (Mission Systems Davenport Inc.), 11634-000 (Ametek Thermal Systems Inc).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-369-0559. Verify interchangeability with system specifications before substitution.
Key specifications for 11634-000: Overall Length: 13.840 INCHES NOMINAL IN; Material: ALUMINUM ALLOY ENCLOSURE. 1 specification is 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.