The Gearshaft,multiple Gears, cataloged under National Stock Number 3040-00-478-2053, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-00-478-2053 |
| Item Name | Gearshaft,multiple Gears |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Teeth Quantity | 72 FIRST GEAR |
| Gear Quantity | 2 |
| Diametral Pitch | 48 FIRST GEAR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 66358-301 | 5/9 Secondary reference Astro Gear and Instrument Co Inc |
| 66358-301 | 3/9 Design control — primary reference U.S. Government activity |
| 66358 | D/9 Drawing number reference only U.S. Government activity |
NSN 3040-00-478-2053 is a Gearshaft,multiple Gears, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 6150-01-006-0884, 4310-01-036-4313, 5120-01-679-6749. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-00-478-2053: Teeth Quantity: 72 FIRST GEAR; Gear Quantity: 2; Diametral Pitch: 48 FIRST GEAR. 3 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.
NSN 3040-00-478-2053 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.