The Gear Cluster, cataloged under National Stock Number 3020-00-404-7971, 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 Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 16 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. 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 | 3020-00-404-7971 |
| Primary Part Number | 3015427 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.495 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.860 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Counterbore Nominal Diameter | 1.645 INCHES BOTH ENDS IN |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Bore Style | W/COUNTERBORE BOTH ENDS |
| Nominal Overall Length | 1.975 INCHES IN |
| Material Document and Classification | AMS 6260 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Hub Style Designator | 3 STEPS BETWEEN FIRST AND SECOND GEAR |
| Hub Nominal Length | 1.205 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Nominal Outside Diameter | 2.778 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 2.942 INCHES FIRST GEAR IN |
| Material | STEEL COMP E9310 OVERALL |
| Counterbore Nominal Depth | 0.488 INCHES BOTH ENDS IN |
| Construction | SOLID |
| Attachment Method | MOUNTING HOLE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 3015427 PRIMARY | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN) |
NSN 3020-00-404-7971 is a Gear Cluster, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-404-7971 has 1 manufacturer part number on file: 3015427 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).
1 possible match (shared part number, not a government interchangeability claim): 5999-01-734-9287. Verify interchangeability with system specifications before substitution.
Key specifications for 3015427: Bore Nominal Diameter: 1.495 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.860 INCHES BETWEEN FIRST AND SECOND GEAR IN; Counterbore Nominal Diameter: 1.645 INCHES BOTH ENDS IN; Design Type: SPUR SECOND GEAR. 16 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 3020-00-404-7971 has DEMIL Code Q. 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.