The Gear Cluster, cataloged under National Stock Number 3020-00-072-0559, 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 Komatsu America Corp.. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-00-072-0559 |
| Primary Part Number | 729962 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Komatsu America Corp. |
| Status | ACTIVE |
| Bore Nominal Diameter | 4.190 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 4.750 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Design Type | SPUR FIRST GEAR |
| Design Type | HELICAL SECOND GEAR |
| Bore Style | PLAIN SECOND END |
| Hardness Rating | 57.0 ROCKWELL C MINIMUM AND 63.0 ROCKWELL C MAXIMUM TEETH |
| Nominal Overall Length | 2.478 INCHES IN |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Hub Style Designator | PLAIN BETWEEN FIRST AND SECOND GEAR |
| Hub Nominal Length | 0.182 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Nominal Outside Diameter | 5.345 INCHES FIRST GEAR IN |
| Nominal Outside Diameter | 7.956 INCHES SECOND 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 |
| Part Number | Manufacturer |
|---|---|
| 729962 PRIMARY | Komatsu America Corp. (USA) |
| Reference | Meaning |
|---|---|
| 729962 | 5/9 Secondary reference Wabco Construction and Mining Equipment Group Indianapolis Plant an American Standard Inc Co |
| 729962 | 5/9 Secondary reference American Standard Inc Westinghouse Air Brake Co Div |
NSN 3020-00-072-0559 is a Gear Cluster, manufactured by Komatsu America Corp., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-072-0559 has 1 manufacturer part number on file: 729962 (Komatsu America Corp.).
1 possible match (shared part number, not a government interchangeability claim): 5330-00-565-8865. Verify interchangeability with system specifications before substitution.
Key specifications for 729962: Bore Nominal Diameter: 4.190 INCHES BOTH ENDS IN; Hub Nominal Diameter: 4.750 INCHES BETWEEN FIRST AND SECOND GEAR IN; Design Type: SPUR FIRST GEAR; Design Type: HELICAL SECOND GEAR. 14 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.