The Piston,hydraulic Accumulator, cataloged under National Stock Number 1650-01-399-3429, 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 Inventory Control Point Mechanicsburg. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-01-399-3429 |
| Primary Part Number | 211066764SS |
| Item Name | Piston,hydraulic Accumulator |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR SUBSAFE ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 211066764SS | Naval Inventory Control Point Mechanicsburg (USA) |
| 566-6404316 FIND 7SS | Naval Inventory Control Point Mechanicsburg (USA) |
| 6404316 FN 7SS | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 211066764 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 566-6404316 FIND 7 | 5/1 Secondary reference Naval Sea Systems Command |
| 6404316 FN 7 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 1650-01-399-3429 is a Piston,hydraulic Accumulator, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-399-3429 has 3 manufacturer part numbers on file: 211066764SS (Naval Inventory Control Point Mechanicsburg), 566-6404316 FIND 7SS (Naval Inventory Control Point Mechanicsburg), 6404316 FN 7SS (Naval Inventory Control Point Mechanicsburg).
Key specifications for 211066764SS: Criticality Code Justification: ZZZY; End Item Identification: CYLINDER, ASSEMBLY-ACTUATING,LINEAR, HYDRAULIC; Reference Number Differentiating Characteristics: QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR SUBSAFE ITEMS. 2 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 1650-01-399-3429 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.