The Gearshaft,worm Wheel, cataloged under National Stock Number 3040-00-421-4990, 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 18 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-421-4990 |
| Primary Part Number | 2523846 |
| Item Name | Gearshaft,worm Wheel |
| 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 | 3.1683 DEGREES |
| Shaft Largest Diameter | 1.218 INCHES NOMINAL IN |
| Shaft End Size | 1.542 INCHES IN |
| Teeth Quantity | 14 |
| Tooth Direction | LEFT |
| Diametral Pitch | 30 |
| Face Type | STRAIGHT |
| Gear Outside Diameter | 0.616 INCHES NOMINAL IN |
| Longer Shaft Segment Length | 4.765 INCHES NOMINAL IN |
| Gear Material | STEEL |
| Shaft Length | 10.999 INCHES NOMINAL IN |
| Shaft End Type | SPLINED INVOLUTE |
| Gear Location on Shaft | OFF CENTER BETWEEN ENDS OF SHAFT |
| Pressure Angle | 30.0000 DEGREES |
| Face Width | 1.594 INCHES NOMINAL IN |
| Mating Thread Lead Quantity | 1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3040-00-421-4990 is a Gearshaft,worm Wheel, 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 3040-00-421-4990 has 2 manufacturer part numbers on file: 2523846 (Bae Systems Land & Armaments L.p.), 2523846 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 2523846: Shaft Type: SHOULDERED; Shaft Material: STEEL; Helix Angle: 3.1683 DEGREES; Shaft Largest Diameter: 1.218 INCHES NOMINAL IN. 18 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.