The Gearshaft,spur, cataloged under National Stock Number 3040-00-080-7019, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-00-080-7019 |
| Primary Part Number | 6779799 |
| Item Name | Gearshaft,spur |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Shaft Type | SHOULDERED |
| Shaft Material | STEEL |
| Shaft Largest Diameter | 1.378 INCHES NOMINAL IN |
| Shaft End Size | 0.985 INCHES AND 1.296 INCHES IN |
| Gear Outside Diameter | 6.773 INCHES NOMINAL IN |
| Longer Shaft Segment Length | 4.320 INCHES NOMINAL IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM GEAR |
| Gear Material | STEEL |
| Shaft End Type | PLAIN AND SPLINED STRAIGHT |
| Gear Location on Shaft | OFF CENTER BETWEEN ENDS OF SHAFT |
| Pressure Angle | 25.0000 DEGREES |
| Face Width | 0.540 INCHES NOMINAL 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 |
|---|---|
| 6779799 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| Reference | Meaning |
|---|---|
| 6779799 | 5/9 Secondary reference General Motors Corp |
NSN 3040-00-080-7019 is a Gearshaft,spur, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-080-7019 has 1 manufacturer part number on file: 6779799 (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for 6779799: Shaft Type: SHOULDERED; Shaft Material: STEEL; Shaft Largest Diameter: 1.378 INCHES NOMINAL IN; Shaft End Size: 0.985 INCHES AND 1.296 INCHES IN. 12 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.