The Plunger and Wormshaft, cataloged under National Stock Number 2990-00-364-4271, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Curtiss-Wright Controls, Inc. Div Actuation Division. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2990-00-364-4271 |
| Primary Part Number | 21-71235-00 |
| Item Name | Plunger and Wormshaft |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Curtiss-Wright Controls, Inc. Div Actuation Division |
| Status | ACTIVE |
| General Characteristics Item Description | U/O PILOT VALVE,RIGHT OR LEFT HAND ENGINES |
| 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 |
|---|---|
| 21-71235-00 PRIMARY | Curtiss-Wright Controls, Inc. Div Actuation Division (USA) |
| 3275739 PRIMARY | Hatch & Kirk, Inc. (USA) |
| Reference | Meaning |
|---|---|
| G18BM5 | 5/9 Secondary reference Curtiss-Wright Corp |
| G18BM5 | 5/9 Secondary reference Curtiss-Wright Controls, Inc. Div Actuation Division |
| 3275739 | 5/9 Secondary reference General Motors Corp Electro-Motive Div |
NSN 2990-00-364-4271 is a Plunger and Wormshaft, manufactured by Curtiss-Wright Controls, Inc. Div Actuation Division, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-364-4271 has 2 manufacturer part numbers on file: 21-71235-00 (Curtiss-Wright Controls, Inc. Div Actuation Division), 3275739 (Hatch & Kirk, Inc.).
Key specifications for 21-71235-00: General Characteristics Item Description: U/O PILOT VALVE,RIGHT OR LEFT HAND ENGINES. 1 specification is 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.
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.