The Gear,spur, cataloged under National Stock Number 3020-01-146-4200, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-146-4200 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Teeth Quantity | 27 |
| Body Style | PLAIN, WITH LIGHTENING HOLES |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 1.1250 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 1.208 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Face Nominal Width | 0.220 INCHES IN |
| 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 |
|---|---|
| B39-1077P2 | C/1 Advisory reference — outside the item-of-supply concept Aerodyne Products Corp |
| B39-1077 | D/9 Drawing number reference only Aerodyne Products Corp |
| B39-1077-2 | 3/9 Design control — primary reference Aerodyne Products Corp |
NSN 3020-01-146-4200 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3020-01-162-2781. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-01-146-4200: Teeth Quantity: 27; Body Style: PLAIN, WITH LIGHTENING HOLES; Style Designator: PROTRUDING HUB; Pitch Diameter: 1.1250 INCHES NOMINAL IN. 8 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 3020-01-146-4200 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.