The Gear,helical, cataloged under National Stock Number 3020-00-517-2902, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-517-2902 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.5000 INCHES BOTH ENDS IN |
| Helix Angle | 10.0000 DEGREES |
| Teeth Quantity | 17 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | LEFT |
| Teeth Type | SINGLE HELIX |
| Nominal Overall Length | 4.938 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 4.2500 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Pressure Angle | 28.0000 DEGREES |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
|---|---|
| 3260473CHR0MEPL | C/1 Advisory reference — outside the item-of-supply concept General Motors Corp Electro-Motive Div |
| 3260473 | 3/9 Design control — primary reference General Motors Corp |
| 3260473 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
NSN 3020-00-517-2902 is a Gear,helical, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-517-2902: Bore Nominal Diameter: 0.5000 INCHES BOTH ENDS IN; Helix Angle: 10.0000 DEGREES; Teeth Quantity: 17; Body Style: PLAIN, SOLID. 13 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.