The Servocylinder, cataloged under National Stock Number 1650-00-367-2955, 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 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1650-00-367-2955 |
| Primary Part Number | A51H9000-9 |
| Item Name | Servocylinder |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| Status | ACTIVE |
| FSC Application Data | HYDRAULIC SYSTEMS,ACFT |
| Pressure Rating | 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Compressed Length | 34.990 INCHES MINIMUM AND 35.110 INCHES MAXIMUM IN |
| Temp Rating | -65.0 FAHRENHEIT DEGF |
| Temp Rating | 275.0 FAHRENHEIT DEGF |
| Extended Length | 43.740 INCHES MINIMUM AND 43.860 INCHES MAXIMUM IN |
| Design Characteristics | DOUBLE ACTING SINGLE CYLINDER |
| Port Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Body Outside Diameter | 6.130 INCHES NOMINAL IN |
| Port Thread Class | 3B |
| Port Thread Quantity Per Inch | 14 |
| Port Thread Diameter | 0.875 INCHES NOMINAL IN |
| Port Location and Quantity | 4 CENTER SECTION |
| Port Style | GASKET SEAL |
| Integral Valve Operation Method | HYDRAULIC |
| Bore Diameter | 5.474 INCHES NOMINAL IN |
| Material | STEEL BODY |
| Mounting Type and Location | TONGUE CYLINDER HEAD END |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY THE SOURCE CONTROL DWG NO. |
| 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 |
|---|---|
| 3187000-9 | Moog Military Aircraft Llc (USA) |
| A51H9000-9 | Northrop Grumman Systems Corporation (USA) |
| A51H9000-9 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems (USA) |
| Reference | Meaning |
|---|---|
| 3187000-9 | 5/9 Secondary reference Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div |
NSN 1650-00-367-2955 is a Servocylinder, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-367-2955 has 3 manufacturer part numbers on file: 3187000-9 (Moog Military Aircraft Llc), A51H9000-9 (Northrop Grumman Systems Corporation), A51H9000-9 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems).
Key specifications for A51H9000-9: Overall Height: 12.230 INCHES NOMINAL IN; FSC Application Data: HYDRAULIC SYSTEMS,ACFT; Pressure Rating: 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Compressed Length: 34.990 INCHES MINIMUM AND 35.110 INCHES MAXIMUM IN. 19 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 1650-00-367-2955 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.