The Cylinder,spring Powered, cataloged under National Stock Number 2990-01-075-4720, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Woodward, Inc.. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 2990-01-075-4720 |
| Primary Part Number | 365502 |
| Item Name | Cylinder,spring Powered |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Woodward, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | MATL CAST IRON PER ASTM A159-707,CLASS G3500; 1.749 IN. ID; 2.594 IN. O/A H IN |
| 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 |
|---|---|
| 9987-961PC211 | Woodward, Inc. (USA) |
| 365502 PRIMARY | Woodward, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 9987-961 | D/9 Drawing number reference only Woodward, Inc. |
| 365502 | 5/9 Secondary reference Woodward, Inc. Div Fuel Systems and Controls |
NSN 2990-01-075-4720 is a Cylinder,spring Powered, manufactured by Woodward, Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-075-4720 has 2 manufacturer part numbers on file: 9987-961PC211 (Woodward, Inc.), 365502 (Woodward, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 5950-01-356-4233, 4920-01-483-2554. Verify interchangeability with system specifications before substitution.
Key specifications for 365502: General Characteristics Item Description: MATL CAST IRON PER ASTM A159-707,CLASS G3500; 1.749 IN. ID; 2.594 IN. O/A H IN; End Item Identification: WOODWARD GOVERNOR CO.,GOVERNOR-PG-PL,MODEL 9900-421. 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.