The Gear,helical, cataloged under National Stock Number 3020-00-200-2103, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-00-200-2103 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Keyway Nominal Width | 0.314 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 1.999 INCHES BOTH ENDS IN |
| Helix Angle | 32.6079 DEGREES |
| Hub Nominal Diameter | 2.625 INCHES FIRST END IN |
| Backlash Designation | GRADE A |
| Teeth Quantity | 27 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | LEFT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.125 INCHES FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Hardness Rating | 24.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 3.5833 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 3.791 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 1.155 INCHES BOTH ENDS IN |
| Pressure Angle | 17.5000 DEGREES |
| Material | IRON CAST OVERALL |
| Face Nominal Width | 1.688 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 |
|---|---|
| 868837 | 3/9 Design control — primary reference Chrysler Realty Company Llc Dba Daimler Chrysler |
| 868837 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-200-2103 is a Gear,helical, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-200-2103: Keyway Nominal Width: 0.314 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.999 INCHES BOTH ENDS IN; Helix Angle: 32.6079 DEGREES; Hub Nominal Diameter: 2.625 INCHES FIRST END IN. 21 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.