The Servocylinder, cataloged under National Stock Number 1650-00-654-1457, 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 Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-654-1457 |
| Primary Part Number | S1665-61750 |
| Item Name | Servocylinder |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Pressure Rating | 1500.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Compressed Length | 13.375 INCHES NOMINAL IN |
| Piston Rod End Similarity | IDENTICAL |
| Extended Length | 14.424 INCHES MINIMUM AND 16.278 INCHES MAXIMUM IN |
| First Piston Rod End Style | BEARING TYPE |
| First End Thickness at Mounting Holes | 0.593 INCHES NOMINAL IN |
| First End Hole Diameter | 0.250 INCHES NOMINAL IN |
| Integral Valve Operation Method | HYDRAULIC |
| First End Outside Diameter | 0.937 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| S1665-61750 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 1650-00-654-1457 is a Servocylinder, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-654-1457 has 1 manufacturer part number on file: S1665-61750 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for S1665-61750: Pressure Rating: 1500.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Compressed Length: 13.375 INCHES NOMINAL IN; Piston Rod End Similarity: IDENTICAL; Extended Length: 14.424 INCHES MINIMUM AND 16.278 INCHES MAXIMUM IN. 9 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.
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.