The Gear Cluster, cataloged under National Stock Number 3020-00-073-6645, 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 Northrop Grumman Systems Corporation. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-073-6645 |
| Primary Part Number | 1852492 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Bore Style | PLAIN BOTH ENDS |
| Precision Classification | QUALITY NUMBER 10 OR QUALITY NUMBER 11 FIRST GEAR |
| Nominal Overall Length | 0.344 INCHES IN |
| Nominal Thread Size | 0.112 INCHES BOTH ENDS IN |
| Hub Nominal Length | 0.125 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Nominal Outside Diameter | 1.894 INCHES FOURTH GEAR IN |
| Surface Treatment | PASSIVATE SECOND GEAR |
| Surface Treatment | PASSIVATE SHAFT/HUB |
| Surface Treatment | ANODIZE FIRST GEAR |
| Material | STEEL COMP 303 SHAFT/HUB |
| Material | STEEL COMP 303 SECOND GEAR |
| Material | ALUMINUM ALLOY 2024 FIRST GEAR |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) BOTH ENDS |
| Construction | ASSEMBLED |
| Attachment Method | MOUNTING HOLE |
| 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 |
|---|---|
| 1852492 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1852492 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
NSN 3020-00-073-6645 is a Gear Cluster, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-073-6645 has 1 manufacturer part number on file: 1852492 (Northrop Grumman Systems Corporation).
Key specifications for 1852492: Design Type: SPUR SECOND GEAR; Design Type: SPUR FIRST GEAR; Bore Style: PLAIN BOTH ENDS; Precision Classification: QUALITY NUMBER 10 OR QUALITY NUMBER 11 FIRST GEAR. 17 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.