The Gear Cluster, cataloged under National Stock Number 3020-00-623-7166, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 29 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-623-7166 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.187 INCHES BOTH ENDS0.187 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.187 INCHES BOTH ENDSUNABLE TO DECODE IN |
| Hub Nominal Diameter | 0.313 INCHES FIRST END0.313 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.313 INCHES FIRST ENDUNABLE TO DECODE IN |
| Hub Nominal Diameter | 0.875 INCHES BETWEEN FIRST AND SECOND GEAR0.875 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Hub Nominal Diameter | 0.875 INCHES BETWEEN FIRST AND SECOND GEARUNABLE TO DECODE IN |
| Design Type | UNABLE TO DECODESPUR SECOND GEARSPUR SECOND GEAR |
| Design Type | UNABLE TO DECODESPUR FIRST GEARSPUR FIRST GEAR |
| Bore Style | UNABLE TO DECODEPLAIN BOTH ENDSPLAIN BOTH ENDS |
| Precision Classification | QUALITY NUMBER 10 OR QUALITY NUMBER 10 OR QUALITY NUMBER 11 ALL GEARSQUALITY NUMBER 11 ALL GEARS |
| Nominal Overall Length | 0.563 INCHES0.563 INCHES IN |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALLQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALLUNABLE TO DECODE |
| Hub Style Designator | PLAIN FIRST ENDUNABLE TO DECODE |
| Hub Style Designator | PLAIN BETWEEN FIRST AND SECOND GEARUNABLE TO DECODE |
| Hub Style Designator | PLAIN BETWEEN FIRST AND SECOND GEARPLAIN BETWEEN FIRST AND SECOND GEAR |
| Hub Style Designator | PLAIN FIRST ENDPLAIN FIRST END |
| Hub Nominal Length | 0.042 INCHES BETWEEN FIRST AND SECOND GEAR0.042 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Hub Nominal Length | 0.042 INCHES BETWEEN FIRST AND SECOND GEARUNABLE TO DECODE IN |
| Hub Nominal Length | 0.2910 INCHES FIRST END0.2910 INCHES FIRST END IN |
| Hub Nominal Length | 0.2910 INCHES FIRST ENDUNABLE TO DECODE IN |
| Nominal Outside Diameter | UNABLE TO DECODE1.015 INCHES SECOND GEAR1.015 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | UNABLE TO DECODE1.718 INCHES FIRST GEAR1.718 INCHES FIRST GEAR IN |
| Surface Treatment | PASSIVATE OVERALLUNABLE TO DECODE |
| Surface Treatment | PASSIVATE OVERALLPASSIVATE OVERALL |
| Material | STEEL COMP 302 OVERALLSTEEL COMP 302 OVERALL |
| Material | STEEL COMP 302 OVERALLUNABLE TO DECODE |
| Construction | SOLIDSOLID |
| Attachment Method | MOUNTING HOLEMOUNTING HOLE |
| 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 |
|---|---|
| SMB287153 | 5/9 Secondary reference U.S. Government activity |
| SMB287153 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-623-7166 is a Gear Cluster, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-623-7166: Bore Nominal Diameter: 0.187 INCHES BOTH ENDS0.187 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.187 INCHES BOTH ENDSUNABLE TO DECODE IN; Hub Nominal Diameter: 0.313 INCHES FIRST END0.313 INCHES FIRST END IN; Hub Nominal Diameter: 0.313 INCHES FIRST ENDUNABLE TO DECODE IN. 29 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.