The Rod,piston,linear Actuating Cyli, cataloged under National Stock Number 1650-00-657-5241, 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 United Aeronautical Corporation Dba United Aeronautical Corp. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-657-5241 |
| Primary Part Number | 5551954 |
| Item Name | Rod,piston,linear Actuating Cyli |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | United Aeronautical Corporation Dba United Aeronautical Corp |
| Status | ACTIVE |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5551954 | United Aeronautical Corporation Dba United Aeronautical Corp (USA) |
| Reference | Meaning |
|---|---|
| 5551954-501 | 5/9 Secondary reference The Boeing Company |
| 5551954-501 | 5/9 Secondary reference Carlson Machine and Tool Inc |
| 5551954-501 | 3/2 Design control — primary reference U.S. Government activity |
| 5551954 | D/9 Drawing number reference only U.S. Government activity |
| 5551954 | 5/9 Secondary reference Consolidated Aeronautics Corp |
NSN 1650-00-657-5241 is a Rod,piston,linear Actuating Cyli, manufactured by United Aeronautical Corporation Dba United Aeronautical Corp, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-657-5241 has 1 manufacturer part number on file: 5551954 (United Aeronautical Corporation Dba United Aeronautical Corp).
Key specifications for 5551954: Overall Length: 18.000 INCHES MAXIMUM IN; Special Features: 1.625 IN.W OF LARGEST END;0.562 IN.THK IN; Material: STEEL. 1 specification is 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 1650-00-657-5241 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.