The Gear,helical, cataloged under National Stock Number 3020-00-973-3166, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-973-3166 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Helix Angle | 4.0000 DEGREES |
| Hub Nominal Diameter | 0.812 INCHES FIRST END IN |
| Backlash Designation | GRADE A |
| Teeth Quantity | 36 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | LEFT |
| Nominal Distance Between Body Face and Protruding Hub End | 0.313 INCHES FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Nominal Overall Length | 1.219 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 1.1277 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Pressure Angle | 20.0000 DEGREES |
| Face Nominal Width | 0.906 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 |
|---|---|
| V09-010-703C | 3/9 Design control — primary reference Project Manager Amphibious Lighters St Louis Mo |
NSN 3020-00-973-3166 is a Gear,helical, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-973-3166: Helix Angle: 4.0000 DEGREES; Hub Nominal Diameter: 0.812 INCHES FIRST END IN; Backlash Designation: GRADE A; Teeth Quantity: 36. 14 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.