The Servocylinder, cataloged under National Stock Number 1650-00-688-8477, 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 6 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-688-8477 |
| Item Name | Servocylinder |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Status | ACTIVE |
| Mounting Facility Diameter | 1.000 INCHES NOMINAL IN |
| Compressed Length | 18.625 INCHES NOMINAL IN |
| Extended Length | 22.137 INCHES NOMINAL IN |
| First End Hole Diameter | 0.500 INCHES NOMINAL IN |
| Bore Diameter | 1.375 INCHES NOMINAL IN |
| Mounting Provision | UNTHREADED MOUNTING HOLES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Reference | Meaning |
|---|---|
| 123SCH144-8 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 1273-8 | 3/2 Design control — primary reference U.S. Government activity |
| 123SCH144-8 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
NSN 1650-00-688-8477 is a Servocylinder, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 3655-01-064-9462, 5340-01-579-3082, 5340-01-626-8911. Verify interchangeability with system specifications before substitution.
Key specifications for 1650-00-688-8477: Mounting Facility Diameter: 1.000 INCHES NOMINAL IN; Overall Height: 6.750 INCHES NOMINAL IN; Compressed Length: 18.625 INCHES NOMINAL IN; Extended Length: 22.137 INCHES NOMINAL IN. 6 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 1650-00-688-8477 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.