The Cylinder Assembly,actuating,line, cataloged under National Stock Number 1650-00-628-8991, 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 12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-628-8991 |
| Item Name | Cylinder Assembly,actuating,line |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Status | ACTIVE |
| FSC Application Data | HYDRAULIC SYSTEM AIRCRAFT |
| Pressure Rating | 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Compressed Length | 9.625 INCHES NOMINAL IN |
| Seat Angle in Deg | 60.0 |
| Design Characteristics | SINGLE ACTING SINGLE CYLINDER |
| Port Thread Series Designator | UNF |
| Port Thread Class | 3B |
| Port Thread Quantity Per Inch | 20 |
| Body Material | STEEL |
| Port Thread Diameter | 0.438 INCHES NOMINAL IN |
| Port Style | GASKET SEAL |
| Bore Diameter | 0.751 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Reference | Meaning |
|---|---|
| 4434655-511 | 5/2 Secondary reference U.S. Government activity |
| 4434655-509 | 5/9 Secondary reference The Boeing Company |
| 4434655-509 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1650-00-628-8991 is a Cylinder Assembly,actuating,line, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
Key specifications for 1650-00-628-8991: Overall Height: 2.125 INCHES NOMINAL IN; FSC Application Data: HYDRAULIC SYSTEM AIRCRAFT; Pressure Rating: 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Compressed Length: 9.625 INCHES NOMINAL IN. 12 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 1650-00-628-8991 has DEMIL Code Q. 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.