The Gear,internal, cataloged under National Stock Number 3020-01-478-7502, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-478-7502 |
| Item Name | Gear,internal |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Teeth Quantity | 42 |
| Teeth Type | SPUR |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Pressure Angle | 0.0020 DEGREES |
| Material | STEEL COMP E4340 BODY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 4558718 | D/9 Drawing number reference only U.S. Government activity |
| 845-4558718 ITEM 4 | 5/2 Secondary reference U.S. Government activity |
| 2642-343-03 ITEM 4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-478-7502 is a Gear,internal, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3020-01-492-6468, 3020-01-546-7936. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-01-478-7502: Teeth Quantity: 42; Teeth Type: SPUR; Material Document and Classification: MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE BODY; Special Features: END ITEM SHAFT SHOULDERED. 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.