The Gear,helical, cataloged under National Stock Number 3020-00-802-6943, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is General Electric Co Electrical Distribution and Control. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-802-6943 |
| Primary Part Number | 847B397 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | General Electric Co Electrical Distribution and Control |
| Status | ACTIVE |
| Keyway Nominal Width | 0.501 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 1.722 INCHES BOTH ENDS IN |
| Helix Angle | 23.0000 DEGREES |
| Hub Nominal Diameter | 2.500 INCHES FIRST END IN |
| Hub Nominal Diameter | 2.500 INCHES SECOND END IN |
| Teeth Quantity | 68 |
| Body Style | WEBBED, WITH LIGHTENING HOLES |
| Tooth Direction | LEFT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Teeth Type | SINGLE HELIX |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM TEETH |
| Style Designator | FLUSH HUB |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 4140 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.6634 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 6.827 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.216 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 4140 OVERALL |
| Face Nominal Width | 1.061 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 |
| Part Number | Manufacturer |
|---|---|
| 847B397 PRIMARY | General Electric Co Electrical Distribution and Control (USA) |
| Reference | Meaning |
|---|---|
| 215G15-32 | 5/9 Secondary reference General Electric Co Electrical Distribution and Control |
NSN 3020-00-802-6943 is a Gear,helical, manufactured by General Electric Co Electrical Distribution and Control, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-802-6943 has 1 manufacturer part number on file: 847B397 (General Electric Co Electrical Distribution and Control).
Key specifications for 847B397: Keyway Nominal Width: 0.501 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.722 INCHES BOTH ENDS IN; Helix Angle: 23.0000 DEGREES; Hub Nominal Diameter: 2.500 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.