The Gear,spur, cataloged under National Stock Number 3020-01-189-9475, 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 Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division. Government technical data includes 27 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-189-9475 |
| Primary Part Number | 363C145-1 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.654 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.812 INCHES FIRST END IN |
| Teeth Quantity | 21 |
| Surface Treatment Document and Classification | MIL-C-13924,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 0.405 INCHES BOTH ENDS IN |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.615 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 7 |
| Hardness Rating | 58.0 ROCKWELL C NOMINAL OVERALL |
| Nominal Overall Length | 0.880 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | AMS 6260 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.6562 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | 1 GROOVE FIRST END |
| Spline Quantity | 31 BOTH ENDS |
| Nominal Outside Diameter | 0.718 INCHES IN |
| Surface Treatment | OXIDE OVERALL |
| Nominal Distance From End to First Groove | 0.425 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP E9310 OVERALL |
| First Groove Nominal Diameter | 0.570 INCHES FIRST END IN |
| Counterbore Nominal Depth | 0.445 INCHES BOTH ENDS IN |
| First Groove Nominal Width | 0.090 INCHES FIRST END IN |
| Spline Pitch Diameter | 0.6458 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 0.265 INCHES IN |
| 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 |
|---|---|
| 363C145-1 PRIMARY | Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division (USA) |
| Reference | Meaning |
|---|---|
| 363C145-1 | 5/9 Secondary reference Eaton Motor Site |
NSN 3020-01-189-9475 is a Gear,spur, manufactured by Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-189-9475 has 1 manufacturer part number on file: 363C145-1 (Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division).
Key specifications for 363C145-1: Bore Nominal Diameter: 0.654 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.812 INCHES FIRST END IN; Teeth Quantity: 21; Surface Treatment Document and Classification: MIL-C-13924,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 27 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 3020-01-189-9475 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.