The Cylinder Assembly,actuating,line, cataloged under National Stock Number 1650-00-285-7552, 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 20 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1650-00-285-7552 |
| Item Name | Cylinder Assembly,actuating,line |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Status | ACTIVE |
| Mounting Facility Diameter | 0.262 INCHES MAXIMUM IN |
| Mounting Facility Diameter | 0.257 INCHES MINIMUM IN |
| Pressure Rating | 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Center to Center Distance Between Mounting Provisions | 2.625 INCHES MINIMUM IN |
| Center to Center Distance Between Mounting Provisions | 2.635 INCHES MAXIMUM IN |
| Compressed Length | 11.499 INCHES MINIMUM AND 11.619 INCHES MAXIMUM IN |
| Temp Rating | -65.0 FAHRENHEIT DEGF |
| Temp Rating | 275.0 FAHRENHEIT DEGF |
| Seat Angle in Deg | 45.0 |
| Extended Length | 12.959 INCHES MINIMUM AND 13.019 INCHES MAXIMUM IN |
| Design Characteristics | SINGLE ACTING SINGLE CYLINDER |
| Overall Diameter | 2.000 INCHES NOMINAL IN |
| Port Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Mounting Provision Arrangement Style | TWO HOLE |
| Port Thread Class | 3B |
| Port Thread Quantity Per Inch | 16 |
| Port Thread Diameter | 0.750 INCHES NOMINAL IN |
| Port Style | GASKET SEAL |
| Mounting Provision for Which Designed | UNTHREADED MOUNTING HOLES |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY SOURCE CONTROL DRAWING A51H9040-3FSCM 26512 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A51H9040-3 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems (USA) |
| Reference | Meaning |
|---|---|
| A51H9040-3 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 611039-4 | 3/3 Design control — primary reference U.S. Government activity |
NSN 1650-00-285-7552 is a Cylinder Assembly,actuating,line, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-285-7552 has 1 manufacturer part number on file: A51H9040-3 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems).
1 possible match (shared part number, not a government interchangeability claim): 1650-01-504-3939. Verify interchangeability with system specifications before substitution.
Key specifications for 1650-00-285-7552: Mounting Facility Diameter: 0.262 INCHES MAXIMUM IN; Mounting Facility Diameter: 0.257 INCHES MINIMUM IN; Pressure Rating: 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Center to Center Distance Between Mounting Provisions: 2.625 INCHES MINIMUM IN. 20 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 1650-00-285-7552 has DEMIL Code D. 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.