The Cooler,hydraulic Oil,aircraft, cataloged under National Stock Number 1650-01-180-5765, 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 Triumph Thermal Systems, Llc. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-01-180-5765 |
| Primary Part Number | UA537571-3 |
| Item Name | Cooler,hydraulic Oil,aircraft |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Triumph Thermal Systems, Llc |
| Status | ACTIVE |
| FSC Application Data | FUEL SYSTEM,B-1B AIRCRAFT |
| Supplementary Features | HYDRAULIC OIL TO FUEL,COOLER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| UA537571-3 PRIMARY | Triumph Thermal Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| UA537571-2 | 5/9 Secondary reference Triumph Thermal Systems, Llc |
NSN 1650-01-180-5765 is a Cooler,hydraulic Oil,aircraft, manufactured by Triumph Thermal Systems, Llc, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-180-5765 has 1 manufacturer part number on file: UA537571-3 (Triumph Thermal Systems, Llc).
Key specifications for UA537571-3: FSC Application Data: FUEL SYSTEM,B-1B AIRCRAFT; Supplementary Features: HYDRAULIC OIL TO FUEL,COOLER. 2 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.
NSN 1650-01-180-5765 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.