The Gearshaft,helical, cataloged under National Stock Number 3040-00-604-9781, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 17 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-604-9781 |
| Primary Part Number | 1807131 |
| Item Name | Gearshaft,helical |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Shaft Type | SHOULDERED |
| Shaft Material | STEEL COMP 4150 |
| Helix Angle | 15.0000 DEGREES |
| Shaft Largest Diameter | 3.732 INCHES NOMINAL IN |
| Shaft End Size | 2.376 INCHES IN |
| Teeth Quantity | 20 |
| Tooth Direction | RIGHT |
| Diametral Pitch | 5 |
| Teeth Type | SINGLE HELIX |
| Gear Outside Diameter | 4.461 INCHES NOMINAL IN |
| Longer Shaft Segment Length | 7.500 INCHES NOMINAL IN |
| Gear Material | STEEL COMP 4150 |
| Shaft Length | 8.938 INCHES NOMINAL IN |
| Shaft End Type | PLAIN AND SPLINED INVOLUTE, INTERNAL |
| Gear Location on Shaft | OFF CENTER BETWEEN ENDS OF SHAFT |
| Pressure Angle | 20.0000 DEGREES |
| Face Width | 2.250 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 |
|---|---|
| 1807131 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 3040-00-604-9781 is a Gearshaft,helical, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-604-9781 has 1 manufacturer part number on file: 1807131 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 1807131: Shaft Type: SHOULDERED; Shaft Material: STEEL COMP 4150; Helix Angle: 15.0000 DEGREES; Shaft Largest Diameter: 3.732 INCHES NOMINAL IN. 17 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.