The Gear Cluster, cataloged under National Stock Number 3020-00-967-2128, 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 L3harris Interstate Electronics Corporation. Government technical data includes 24 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-967-2128 |
| Primary Part Number | 512-1022-057 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | L3harris Interstate Electronics Corporation |
| Status | ACTIVE |
| Bore Nominal Diameter | UNABLE TO DECODE0.219 INCHES SECOND END0.219 INCHES SECOND END IN |
| Hub Nominal Diameter | UNABLE TO DECODE0.447 INCHES FIRST END0.447 INCHES FIRST END IN |
| Counterbore Nominal Diameter | UNABLE TO DECODE0.225 INCHES SECOND END0.225 INCHES SECOND END IN |
| Design Type | UNABLE TO DECODESPUR ALL GEARSSPUR ALL GEARS |
| Bore Style | UNABLE TO DECODEW/COUNTERBORE SECOND ENDW/COUNTERBORE SECOND END |
| Nominal Overall Length | 0.134 INCHES0.134 INCHES IN |
| Material Document and Classification | UNABLE TO DECODEMIL-P-14078 MIL SPEC SINGLE MATERIAL RESPONSE SECOND GEARMIL-P-14078 MIL SPEC SINGLE MATERIAL RESPONSE SECOND GEAR |
| Material Document and Classification | UNABLE TO DECODEQQ-A-355/T3 FED SPEC SINGLE MATERIAL RESPONSE FIRST GEARQQ-A-355/T3 FED SPEC SINGLE MATERIAL RESPONSE FIRST GEAR |
| Material Document and Classification | UNABLE TO DECODEQQ-A-355/T3 FED SPEC SINGLE MATERIAL RESPONSE SHAFT/HUBQQ-A-355/T3 FED SPEC SINGLE MATERIAL RESPONSE SHAFT/HUB |
| Material Document and Classification | UNABLE TO DECODEQQ-A-355/T3 FED SPEC SINGLE MATERIAL RESPONSE THIRD GEARQQ-A-355/T3 FED SPEC SINGLE MATERIAL RESPONSE THIRD GEAR |
| Hub Style Designator | UNABLE TO DECODEPLAIN FIRST ENDPLAIN FIRST END |
| Hub Nominal Length | UNABLE TO DECODE0.044 INCHES FIRST END0.044 INCHES FIRST END IN |
| Nominal Outside Diameter | UNABLE TO DECODE0.760 INCHES ALL GEARS0.760 INCHES ALL GEARS IN |
| Surface Treatment | UNABLE TO DECODEANODIZE FIRST GEARANODIZE FIRST GEAR |
| Surface Treatment | ANODIZE SHAFT/HUBUNABLE TO DECODE |
| Surface Treatment | ANODIZE THIRD GEARANODIZE THIRD GEAR |
| Surface Treatment | UNABLE TO DECODEANODIZE SHAFT/HUBANODIZE SHAFT/HUB |
| Material | UNABLE TO DECODEALUMINUM ALLOY 2024 FIRST GEARALUMINUM ALLOY 2024 FIRST GEAR |
| Material | UNABLE TO DECODEALUMINUM ALLOY 2024 SHAFT/HUBALUMINUM ALLOY 2024 SHAFT/HUB |
| Material | UNABLE TO DECODEALUMINUM ALLOY 2024 THIRD GEARALUMINUM ALLOY 2024 THIRD GEAR |
| Material | UNABLE TO DECODEPLASTIC POLYTETRAFLUOROETHYLENE SECOND GEARPLASTIC POLYTETRAFLUOROETHYLENE SECOND GEAR |
| Counterbore Nominal Depth | UNABLE TO DECODE0.050 INCHES SECOND END0.050 INCHES SECOND END IN |
| Construction | ASSEMBLEDASSEMBLED |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 512-1022-057 PRIMARY | L3harris Interstate Electronics Corporation (USA) |
| Reference | Meaning |
|---|---|
| 512-1022-057 | 5/2 Secondary reference U.S. Government activity |
NSN 3020-00-967-2128 is a Gear Cluster, manufactured by L3harris Interstate Electronics Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-967-2128 has 1 manufacturer part number on file: 512-1022-057 (L3harris Interstate Electronics Corporation).
Key specifications for 512-1022-057: Bore Nominal Diameter: UNABLE TO DECODE0.219 INCHES SECOND END0.219 INCHES SECOND END IN; Hub Nominal Diameter: UNABLE TO DECODE0.447 INCHES FIRST END0.447 INCHES FIRST END IN; Counterbore Nominal Diameter: UNABLE TO DECODE0.225 INCHES SECOND END0.225 INCHES SECOND END IN; Design Type: UNABLE TO DECODESPUR ALL GEARSSPUR ALL GEARS. 24 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.