The Gear Cluster, cataloged under National Stock Number 3020-00-447-7241, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-00-447-7241 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.700 INCHES BOTH ENDS IN |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Bore Style | STRAIGHT SPLINE BOTH ENDS |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 2.938 INCHES IN |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 8620H ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spline Quantity | 6 SECOND END |
| Hub Nominal Length | 0.336 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Nominal Outside Diameter | 4.164 INCHES FIFTH GEAR IN |
| Nominal Outside Diameter | 4.997 INCHES FOURTH GEAR IN |
| Material | STEEL COMP 8620H OVERALL |
| Construction | SOLID |
| 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 |
|---|---|
| A3026 | 5/9 Secondary reference U.S. Government activity |
| 4791911 | 5/9 Secondary reference Wabco Construction and Mining Equipment Group Indianapolis Plant an American Standard Inc Co |
| A3026A | 3/9 Design control — primary reference U.S. Government activity |
NSN 3020-00-447-7241 is a Gear Cluster, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 1610-01-150-2641, 5998-01-481-0242. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-00-447-7241: Bore Nominal Diameter: 1.700 INCHES BOTH ENDS IN; Design Type: SPUR SECOND GEAR; Design Type: SPUR FIRST GEAR; Bore Style: STRAIGHT SPLINE BOTH ENDS. 13 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.