The Gear,helical, cataloged under National Stock Number 3020-00-528-7110, 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 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-528-7110 |
| Primary Part Number | 3260461 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Hatch & Kirk, Inc. |
| Status | ACTIVE |
| Keyway Nominal Width | 0.377 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 3.0000 INCHES BOTH ENDS IN |
| Helix Angle | 14.9167 DEGREES |
| Hub Nominal Diameter | 4.5000 INCHES BOTH ENDS IN |
| Teeth Quantity | 80 |
| Body Style | WEBBED, WITH LIGHTENING HOLES |
| Tooth Direction | LEFT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Teeth Type | SINGLE HELIX |
| Style Designator | FLUSH HUB |
| Material Document and Classification | MS 285-72915 MIL STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 16.0000 INCHES NOMINAL IN |
| Tooth Form | STUB |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 16.043 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 1.6958 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | COPPER ALLOY OVERALL |
| Face Nominal Width | 2.500 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 |
|---|---|
| 3260461 PRIMARY | Hatch & Kirk, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3260461 | 5/9 Secondary reference General Motors Corp Electro-Motive Div |
NSN 3020-00-528-7110 is a Gear,helical, manufactured by Hatch & Kirk, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-528-7110 has 1 manufacturer part number on file: 3260461 (Hatch & Kirk, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5841-01-079-2309. Verify interchangeability with system specifications before substitution.
Key specifications for 3260461: Keyway Nominal Width: 0.377 INCHES BOTH ENDS IN; Bore Nominal Diameter: 3.0000 INCHES BOTH ENDS IN; Helix Angle: 14.9167 DEGREES; Hub Nominal Diameter: 4.5000 INCHES BOTH ENDS IN. 19 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.