The Gear,helical, cataloged under National Stock Number 3020-00-786-5594, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-786-5594 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.241 INCHES SECOND END IN |
| Helix Angle | 26.7665 DEGREES |
| Teeth Quantity | 100 |
| Body Style | WEBBED, OFFSET, SOLID |
| Counterbore Nominal Diameter | 1.0050 INCHES SECOND END IN |
| Tooth Direction | RIGHT |
| Bore Style | W/COUNTERBORE SECOND END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.520 INCHES FIRST END IN |
| First Step Nominal Length | 1.125 INCHES FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | PROTRUDING HUB, RECESSED BODY |
| Pitch Diameter | 3.5000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 1.750 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| End Nominal Length | 0.385 INCHES FIRST END IN |
| Nominal Outside Diameter | 3.575 INCHES IN |
| Surface Treatment | PASSIVATE HUB |
| End Nominal Diameter | 1.000 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | PLASTIC POLYAMIDE NYLON BODY |
| Material | STEEL CORROSION RESISTING HUB |
| Counterbore Nominal Depth | 0.217 INCHES SECOND END IN |
| Body Recess Nominal Depth | 0.066 INCHES SECOND END IN |
| Face Nominal Width | 0.218 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 |
|---|---|
| 77-7A101 | 3/2 Design control — primary reference U.S. Government activity |
| 77-7A1 | 5/2 Secondary reference U.S. Government activity |
NSN 3020-00-786-5594 is a Gear,helical, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-786-5594: Bore Nominal Diameter: 0.241 INCHES SECOND END IN; Helix Angle: 26.7665 DEGREES; Teeth Quantity: 100; Body Style: WEBBED, OFFSET, SOLID. 25 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.