The Gear,spur, cataloged under National Stock Number 3020-01-679-4089, 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 Motors Corp. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-679-4089 |
| Primary Part Number | 12640788 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | General Motors Corp |
| Status | ACTIVE |
| Style Designator | HUBLESS |
| Nominal Outside Diameter | 6.960 INCHES IN |
| Material | STEEL OVERALL |
| Face Nominal Width | 0.310 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 |
|---|---|
| 12640788 PRIMARY | General Motors Corp (USA) |
| Reference | Meaning |
|---|---|
| 4401125 | 7/2 Vendor item drawing reference Oshkosh Defense Llc |
NSN 3020-01-679-4089 is a Gear,spur, manufactured by General Motors Corp, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-679-4089 has 1 manufacturer part number on file: 12640788 (General Motors Corp).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-725-5465. Verify interchangeability with system specifications before substitution.
Key specifications for 12640788: Style Designator: HUBLESS; Nominal Outside Diameter: 6.960 INCHES IN; Part Name Assigned by Controlling Agency: GEAR; End Item Identification: 016536516. 4 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.