The Gear,helical, cataloged under National Stock Number 3020-00-294-7788, 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 Hatch & Kirk, Inc.. Government technical data includes 22 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-294-7788 |
| Primary Part Number | 3260959 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Hatch & Kirk, Inc. |
| Status | ACTIVE |
| Keyway Nominal Width | 0.186 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.876 INCHES BOTH ENDS IN |
| Helix Angle | 27.3217 DEGREES |
| Hub Nominal Diameter | 1.750 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Recessed Hub End | 1.156 INCHES FIRST END IN |
| Teeth Quantity | 34 |
| Body Style | WEBBED, OFFSET, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Teeth Type | SINGLE HELIX |
| Nominal Overall Length | 2.375 INCHES IN |
| Style Designator | CONE SHAPE BODY, PROTRUDING HUB, RECESSED HUB |
| Pitch Diameter | 6.8000 INCHES NOMINAL IN |
| Tooth Form | STUB |
| First Step Nominal Diameter | 1.750 INCHES FIRST END IN |
| End Nominal Length | 0.625 INCHES FIRST END IN |
| Nominal Outside Diameter | 7.086 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.526 INCHES AND 0.521 INCHES BOTH ENDS IN |
| End Nominal Diameter | 1.377 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM OVERALL |
| Face Nominal Width | 1.250 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 |
|---|---|
| 3260959 PRIMARY | Hatch & Kirk, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3260959 | 5/9 Secondary reference General Motors Corp Electro-Motive Div |
NSN 3020-00-294-7788 is a Gear,helical, manufactured by Hatch & Kirk, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-294-7788 has 1 manufacturer part number on file: 3260959 (Hatch & Kirk, Inc.).
Key specifications for 3260959: Keyway Nominal Width: 0.186 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.876 INCHES BOTH ENDS IN; Helix Angle: 27.3217 DEGREES; Hub Nominal Diameter: 1.750 INCHES SECOND END IN. 22 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.