The Dampener,flutter, cataloged under National Stock Number 1650-01-338-0568, 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 Tyee Aircraft Inc Div Tyee Aircraft. Government technical data includes 3 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-01-338-0568 |
| Primary Part Number | 6821-1 |
| Item Name | Dampener,flutter |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Tyee Aircraft Inc Div Tyee Aircraft |
| Status | ACTIVE |
| Retracted Length | 13.470 INCHES NOMINAL IN |
| Extended Length | 21.160 INCHES NOMINAL IN |
| Design Type | LINEAR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6821-1 PRIMARY | Tyee Aircraft Inc Div Tyee Aircraft (USA) |
| Reference | Meaning |
|---|---|
| DAA3255P037 | D/9 Drawing number reference only Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| DAA3255P037-101 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
NSN 1650-01-338-0568 is a Dampener,flutter, manufactured by Tyee Aircraft Inc Div Tyee Aircraft, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-338-0568 has 1 manufacturer part number on file: 6821-1 (Tyee Aircraft Inc Div Tyee Aircraft).
2 possible matches (shared part number, not a government interchangeability claim): 6515-01-536-2164, 5895-01-556-6865. Verify interchangeability with system specifications before substitution.
Key specifications for 6821-1: Retracted Length: 13.470 INCHES NOMINAL IN; Extended Length: 21.160 INCHES NOMINAL IN; Design Type: LINEAR; Special Features: ALUMINUM HOUSING 2024-T851 PER QQ-A-225/6,ANODIZE PER MIL-A-8624,TY 2 CL 1; STEEL BALL 17-4PH PER AMS 5643,PASSIVATE PER MIL-S-5002; SELF-ALIGNING; SELF-LUBRICATING BEARINGS. 3 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 1650-01-338-0568 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.