The Cylinder,hydraulic Accumulator, cataloged under National Stock Number 1650-00-175-5540, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1650-00-175-5540 |
| Item Name | Cylinder,hydraulic Accumulator |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Status | ACTIVE |
| FSC Application Data | ACFT HYDRAULIC SYSTEM |
| Overall Diameter | 4.750 INCHES NOMINAL IN |
| Body Outside Diameter | 4.627 INCHES MAXIMUM IN |
| Bore Diameter | 4.507 INCHES MAXIMUM IN |
| 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 |
| Reference | Meaning |
|---|---|
| 291545 | 5/9 Secondary reference Kidde-Fenwal, Llc |
| 291545 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1650-00-175-5540 is a Cylinder,hydraulic Accumulator, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5945-00-253-4492. Verify interchangeability with system specifications before substitution.
Key specifications for 1650-00-175-5540: FSC Application Data: ACFT HYDRAULIC SYSTEM; Overall Diameter: 4.750 INCHES NOMINAL IN; Body Outside Diameter: 4.627 INCHES MAXIMUM IN; Overall Length: 24.562 INCHES MAXIMUM IN. 4 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 1650-00-175-5540 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.