The Plunger Assembly,governor, cataloged under National Stock Number 2990-01-185-4398, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Woodward, Inc.. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | Plunger Assembly,governor |
| FSC / FSG | 2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29) |
| Manufacturers | Woodward, Inc. (CAGE 31361) |
| Parameter | Value |
|---|---|
| NSN | 2990-01-185-4398 |
| Primary Part Number | 4164-561 |
| Item Name | Plunger Assembly,governor |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Woodward, Inc. |
| 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 |
|---|---|
| 4164-561 PRIMARY | Woodward, Inc. (USA) |
| 9987-824 ITEM 13 | Woodward, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 9987-824 | D/9 Drawing number reference only Woodward, Inc. |
| 4164-561 | C/1 Advisory reference — outside the item-of-supply concept Woodward, Inc. Div Fuel Systems and Controls |
NSN 2990-01-185-4398 is a Plunger Assembly,governor, manufactured by Woodward, Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-185-4398 has 2 manufacturer part numbers on file: 4164-561 (Woodward, Inc.), 9987-824 ITEM 13 (Woodward, Inc.).
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.