The Gear,helical, cataloged under National Stock Number 3020-01-056-0780, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-056-0780 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Keyway Nominal Width | 0.505 INCHES BOTH ENDS IN |
| Helix Angle | 45.0000 DEGREES |
| Teeth Quantity | 94 |
| Body Style | PLAIN, WITH LIGHTENING HOLES |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.150 INCHES FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Nominal Overall Length | 0.260 INCHES IN |
| Style Designator | PROTRUDING HUB, RECESSED BODY |
| Material Document and Classification | AMS 6260 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.9792 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 1.000 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP E9310 OVERALL |
| Face Nominal Width | 0.110 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 |
|---|---|
| 1685179-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-056-0780 is a Gear,helical, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-056-0780: Keyway Nominal Width: 0.505 INCHES BOTH ENDS IN; Helix Angle: 45.0000 DEGREES; Teeth Quantity: 94; Body Style: PLAIN, WITH LIGHTENING HOLES. 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.
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.