The Gear,helical, cataloged under National Stock Number 3020-00-528-7134, 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 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-528-7134 |
| Primary Part Number | 3260889 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Hatch & Kirk, Inc. |
| Status | ACTIVE |
| Bore Nominal Diameter | 4.3750 INCHES BOTH ENDS IN |
| Helix Angle | 25.8167 DEGREES |
| Hub Nominal Diameter | 6.750 INCHES FIRST END IN |
| Teeth Quantity | 69 |
| Body Style | WEBBED, OFFSET, SOLID |
| Tooth Direction | RIGHT |
| Teeth Type | SINGLE HELIX |
| Nominal Overall Length | 2.062 INCHES IN |
| Style Designator | PROTRUDING HUB, RECESSED BODY |
| Pitch Diameter | 8.6250 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 8.874 INCHES IN |
| Mounting Hole Thread Quantity Per Inch | 24 AXIALLY THROUGH BODY FIRST END |
| Pressure Angle | 14.5000 DEGREES |
| Bolt Hole Circle Nominal Diameter | 5.250 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Counterbore Nominal Depth | 0.3120 INCHES FIRST END IN |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 1.750 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 |
|---|---|
| 3260889 PRIMARY | Hatch & Kirk, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3260889 | 5/9 Secondary reference General Motors Corp Electro-Motive Div |
NSN 3020-00-528-7134 is a Gear,helical, manufactured by Hatch & Kirk, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-528-7134 has 1 manufacturer part number on file: 3260889 (Hatch & Kirk, Inc.).
Key specifications for 3260889: Bore Nominal Diameter: 4.3750 INCHES BOTH ENDS IN; Helix Angle: 25.8167 DEGREES; Hub Nominal Diameter: 6.750 INCHES FIRST END IN; Teeth Quantity: 69. 18 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.