The Piston,linear Actuating Cylinder, cataloged under National Stock Number 1650-01-389-4240, 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 Naval Sea Systems Command. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Piston,linear Actuating Cylinder |
| FSC / FSG | 1650 — Aircraft Hydraulic, Vacuum, and De-icing System Components (FSG 16) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 1650-01-389-4240 |
| Primary Part Number | 66904666 ITEM 4 |
| Item Name | Piston,linear Actuating Cylinder |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 66904666 ITEM 4 | Naval Sea Systems Command (USA) |
| 400-6690466-4 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 87631-0117 ITEM 4 | 5/9 Secondary reference U.S. Government activity |
| 400-6690466-13 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 6690466-0004 | 3/2 Design control — primary reference U.S. Government activity |
| 6690466 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 1650-01-389-4240 is a Piston,linear Actuating Cylinder, manufactured by Naval Sea Systems Command, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-389-4240 has 2 manufacturer part numbers on file: 66904666 ITEM 4 (Naval Sea Systems Command), 400-6690466-4 (Naval Sea Systems Command).
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.