The Head Booster Servo, cataloged under National Stock Number 2990-01-335-1666, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Woodward, Inc. Div Fuel Systems and Controls. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | Head Booster Servo |
| FSC / FSG | 2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29) |
| Manufacturers | Woodward, Inc. Div Fuel Systems and Controls (CAGE 66503); Turner Engine Controls, a Division of Turner Diesel (CAGE U0189) |
| Parameter | Value |
|---|---|
| NSN | 2990-01-335-1666 |
| Primary Part Number | 4100-941 |
| Item Name | Head Booster Servo |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Woodward, Inc. Div Fuel Systems and Controls |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
NSN 2990-01-335-1666 is a Head Booster Servo, manufactured by Woodward, Inc. Div Fuel Systems and Controls, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-335-1666 has 2 manufacturer part numbers on file: 4100-941 (Woodward, Inc. Div Fuel Systems and Controls), 4100-941 (Turner Engine Controls, a Division of Turner Diesel).
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.