The Gearshaft,helical, cataloged under National Stock Number 3040-00-903-5253, 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 | 3040-00-903-5253 |
| Primary Part Number | 1318050 |
| 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 |
| Helix Angle | 15.0000 DEGREES |
| Shaft Largest Diameter | 3.489 INCHES NOMINAL IN |
| Shaft End Size | 2.751 INCHES AND 2.360 INCHES IN |
| Teeth Quantity | 18 |
| Tooth Direction | RIGHT |
| Diametral Pitch | 4.411 |
| Teeth Type | SINGLE HELIX |
| Gear Outside Diameter | 4.981 INCHES MINIMUM AND 4.983 INCHES MAXIMUM IN |
| Longer Shaft Segment Length | 5.125 INCHES NOMINAL IN |
| Gear Material | STEEL |
| Shaft Length | 12.562 INCHES NOMINAL IN |
| Shaft End Type | CIRCULAR GROOVED, KEYWAY FLAT |
| Gear Location on Shaft | OFF CENTER BETWEEN ENDS OF SHAFT |
| Pressure Angle | 20.0000 DEGREES |
| Face Width | 3.125 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 |
|---|---|
| 1318050 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 3040-00-903-5253 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 3040-00-903-5253 has 1 manufacturer part number on file: 1318050 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 1318050: Shaft Type: SHOULDERED; Shaft Material: STEEL; Helix Angle: 15.0000 DEGREES; Shaft Largest Diameter: 3.489 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.