The Servocylinder, cataloged under National Stock Number 1650-00-674-3687, 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 The Boeing Company Div Defense. Government technical data includes 16 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1650-00-674-3687 |
| Primary Part Number | 20-91023-7 |
| Item Name | Servocylinder |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Voltage Rating in Volts | 28.0 DC |
| Pressure Rating | 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Compressed Length | 10.520 INCHES NOMINAL IN |
| Temp Rating | -65.0 FAHRENHEIT DEGF |
| Temp Rating | 275.0 FAHRENHEIT DEGF |
| Seat Angle in Deg | 60.0 |
| Extended Length | 16.820 INCHES NOMINAL IN |
| Design Characteristics | DOUBLE ACTING SINGLE CYLINDER |
| Port Thread Series Designator | UNF |
| First Piston Rod End Style | BEARING TYPE |
| Port Thread Class | 3B |
| Port Thread Quantity Per Inch | 20 |
| Port Thread Diameter | 0.454 INCHES NOMINAL IN |
| Port Location and Quantity | 2 CENTER SECTION |
| Port Style | GASKET SEAL |
| Integral Valve Operation Method | ELECTRIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 20-91023-7 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 14980-10 | 3/2 Design control — primary reference U.S. Government activity |
| 14980-11 | 5/9 Secondary reference Moog Inc Div Moog Inc., Space and Defense - Salt Lake City |
| 14980-10 | 5/9 Secondary reference E-Systems Inc Montek Div Fluid Controls Opns |
| 14980-11 | 5/9 Secondary reference E-Systems Inc Montek Div Fluid Controls Opns |
| 14980-10 | 5/9 Secondary reference Moog Inc Div Moog Inc., Space and Defense - Salt Lake City |
| 14980-11 | 5/2 Secondary reference U.S. Government activity |
NSN 1650-00-674-3687 is a Servocylinder, manufactured by The Boeing Company Div Defense, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-674-3687 has 1 manufacturer part number on file: 20-91023-7 (The Boeing Company Div Defense).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-122-2790. Verify interchangeability with system specifications before substitution.
Key specifications for 20-91023-7: Voltage Rating in Volts: 28.0 DC; Overall Height: 11.125 INCHES NOMINAL IN; Pressure Rating: 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Compressed Length: 10.520 INCHES NOMINAL IN. 16 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 1650-00-674-3687 has DEMIL Code B. 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.