The Gear Cluster, cataloged under National Stock Number 3020-00-161-8207, 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 Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division. Government technical data includes 21 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-161-8207 |
| Primary Part Number | 180665-1 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.620 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.212 INCHES FIRST END IN |
| Hub Nominal Diameter | 1.750 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Surface Treatment Document and Classification | MIL-C-8837,TYPE 2,CLASS MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Counterbore Nominal Diameter | 1.750 INCHES SECOND END IN |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Bore Style | W/COUNTERBORE SECOND END |
| Bore Style | PLAIN FIRST END |
| Hardness Rating | 54.0 ROCKWELL C MINIMUM AND 56.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 1.655 INCHES IN |
| Hub Style Designator | PLAIN FIRST END |
| Hub Style Designator | 1 STEP BETWEEN FIRST AND SECOND GEAR |
| Hub Nominal Length | 0.700 INCHES FIRST END IN |
| Hub Nominal Length | 0.370 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Nominal Outside Diameter | 1.212 INCHES FIRST GEAR IN |
| Nominal Outside Diameter | 3.711 INCHES SECOND GEAR IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OVERALL |
| Counterbore Nominal Depth | 0.245 INCHES SECOND END IN |
| 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 |
|---|---|
| 180665-1 PRIMARY | Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division (USA) |
NSN 3020-00-161-8207 is a Gear Cluster, manufactured by Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-161-8207 has 1 manufacturer part number on file: 180665-1 (Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division).
Key specifications for 180665-1: Bore Nominal Diameter: 0.620 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.212 INCHES FIRST END IN; Hub Nominal Diameter: 1.750 INCHES BETWEEN FIRST AND SECOND GEAR IN; Surface Treatment Document and Classification: MIL-C-8837,TYPE 2,CLASS MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 21 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.