The Gear,spur, cataloged under National Stock Number 3020-01-044-5403, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-044-5403 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.241 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.405 INCHES SECOND END IN |
| Hub Nominal Diameter | 0.405 INCHES FIRST END IN |
| Teeth Quantity | 12 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 0.312 INCHES BOTH ENDS IN |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.487 INCHES BOTH ENDS IN |
| Hardness Rating | 91.5 ROCKWELL SUPERFICIAL 15-N NOMINAL BODY |
| Hardness Rating | 91.5 ROCKWELL SUPERFICIAL 15-N NOMINAL TEETH |
| Nominal Overall Length | 1.240 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 0.7500 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Spline Quantity | 10 BOTH ENDS |
| Nominal Outside Diameter | 0.874 INCHES IN |
| Pressure Angle | 22.5000 DEGREES |
| Material | STEEL OVERALL |
| Counterbore Nominal Depth | 0.030 INCHES BOTH ENDS IN |
| Spline Pitch Diameter | 0.2083 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 0.261 INCHES IN |
| 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 |
|---|---|
| 213-790 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-044-5403 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-044-5403: Bore Nominal Diameter: 0.241 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.405 INCHES SECOND END IN; Hub Nominal Diameter: 0.405 INCHES FIRST END IN; Teeth Quantity: 12. 22 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.