The Gear Sector,worm Wheel, cataloged under National Stock Number 3020-01-375-7339, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-375-7339 |
| Primary Part Number | DAA7278D154-003 |
| Item Name | Gear Sector,worm Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
| Status | ACTIVE |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.725 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Hub Style Designator | PLAIN FIRST END |
| Face Nominal Width | 0.625 INCHES 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 |
|---|---|
| DAA7278D154-003 PRIMARY | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| Reference | Meaning |
|---|---|
| DAA7278D1254-003 | 5/9 Secondary reference Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
| DAA7278D154 | D/9 Drawing number reference only Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
NSN 3020-01-375-7339 is a Gear Sector,worm Wheel, manufactured by Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-375-7339 has 1 manufacturer part number on file: DAA7278D154-003 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-386-3298. Verify interchangeability with system specifications before substitution.
Key specifications for DAA7278D154-003: Bore Style: PLAIN BOTH ENDS; Nominal Distance Between Body Face and Protruding Hub End: 0.725 INCHES FIRST END IN; Style Designator: PROTRUDING HUB; Hub Style Designator: PLAIN FIRST END. 5 specifications are 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.