The Gear Cluster, cataloged under National Stock Number 3020-01-006-5272, 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 Ontic Engineering & Manufacturing, Inc Dba Ontic Us. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-006-5272 |
| Primary Part Number | 103C125 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Hub Nominal Diameter | 0.1873 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Hub Nominal Diameter | 0.1873 INCHES BETWEEN SECOND AND THIRD GEAR IN |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Precision Classification | QUALITY NUMBER 8 FIRST GEAR |
| Nominal Overall Length | 1.740 INCHES IN |
| Material Document and Classification | QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Hub Style Designator | PLAIN FIRST END |
| Hub Style Designator | PLAIN SECOND END |
| Hub Nominal Length | 0.3200 INCHES SECOND END IN |
| Hub Nominal Length | 0.6300 INCHES FIRST END IN |
| Nominal Outside Diameter | 0.4280 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 1.3542 INCHES FIRST GEAR IN |
| Surface Treatment | PHOSPHATE OVERALL |
| Material | STEEL COMP 4820 OVERALL |
| Construction | SOLID |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 103C125 PRIMARY | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| 103C125 | 5/9 Secondary reference Eaton Motor Site |
| 103C125 | 5/9 Secondary reference Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division |
NSN 3020-01-006-5272 is a Gear Cluster, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-006-5272 has 1 manufacturer part number on file: 103C125 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
Key specifications for 103C125: Hub Nominal Diameter: 0.1873 INCHES BETWEEN FIRST AND SECOND GEAR IN; Hub Nominal Diameter: 0.1873 INCHES BETWEEN SECOND AND THIRD GEAR IN; Design Type: SPUR SECOND GEAR; Design Type: SPUR FIRST 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 3020-01-006-5272 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.