The Dampener,vibration,governor, cataloged under National Stock Number 2990-01-661-1201, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Dampener,vibration,governor |
| FSC / FSG | 2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 2990-01-661-1201 |
| Primary Part Number | 801-6640824 ASSY BZ |
| Item Name | Dampener,vibration,governor |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| 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) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 801-6640824 ASSY BZ PRIMARY | Naval Sea Systems Command (USA) |
| 564-7067439-F173 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2633-700-01 ASSY BZ | 5/2 Secondary reference U.S. Government activity |
| H651-1107-F173 | 5/2 Secondary reference U.S. Government activity |
NSN 2990-01-661-1201 is a Dampener,vibration,governor, manufactured by Naval Sea Systems Command, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-661-1201 has 2 manufacturer part numbers on file: 801-6640824 ASSY BZ (Naval Sea Systems Command), 564-7067439-F173 (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.