The Lock Piston, cataloged under National Stock Number 1650-01-238-2439, 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 Parker Hannifin Corp Aerospace Group Aerospace Hydraulics Div. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-01-238-2439 |
| Primary Part Number | 3821181-101 |
| Item Name | Lock Piston |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Parker Hannifin Corp Aerospace Group Aerospace Hydraulics Div |
| Status | ACTIVE |
| General Characteristics Item Description | NITRALLOY PER MIL-S-6709,COMP A; 1.880 IN. LG; 1.000 IN. DIA IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| 3821181-101 PRIMARY | Parker Hannifin Corp Aerospace Group Aerospace Hydraulics Div (USA) |
| Reference | Meaning |
|---|---|
| 3821181-101 | 5/9 Secondary reference U.S. Government activity |
NSN 1650-01-238-2439 is a Lock Piston, manufactured by Parker Hannifin Corp Aerospace Group Aerospace Hydraulics Div, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-238-2439 has 1 manufacturer part number on file: 3821181-101 (Parker Hannifin Corp Aerospace Group Aerospace Hydraulics Div).
Key specifications for 3821181-101: General Characteristics Item Description: NITRALLOY PER MIL-S-6709,COMP A; 1.880 IN. LG; 1.000 IN. DIA IN; End Item Identification: AIRCRAFT MODEL AV-8. 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 1650-01-238-2439 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.