The Gearshaft,helical, cataloged under National Stock Number 3040-01-247-0586, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity 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 | 3040-01-247-0586 |
| Primary Part Number | 1395AS274 |
| Item Name | Gearshaft,helical |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Shaft Type | SHOULDERED |
| Shaft Material | STEEL COMP 4340 OR STEEL COMP 4130 AND STEEL COMP 4140 |
| Helix Angle | 16.8889 DEGREES |
| Shaft Largest Diameter | 0.960 INCHES NOMINAL IN |
| Shaft End Size | 0.906 INCHES AND 0.625 INCHES IN |
| Teeth Quantity | 16 |
| Tooth Direction | RIGHT |
| Diametral Pitch | 8 |
| Teeth Type | SINGLE HELIX |
| Gear Outside Diameter | 2.433 INCHES MINIMUM AND 2.443 INCHES MAXIMUM IN |
| Longer Shaft Segment Length | 2.720 INCHES NOMINAL IN |
| Gear Material | STEEL COMP 4340 OR STEEL COMP 4130 OR STEEL COMP 4140 |
| Shaft Length | 4.900 INCHES NOMINAL IN |
| Shaft End Type | SPLINED INVOLUTE AND THREADED EXTERNAL |
| Gear Location on Shaft | OFF CENTER BETWEEN ENDS OF SHAFT |
| Pressure Angle | 20.0000 DEGREES |
| Face Width | 0.520 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1395AS274 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 3040-01-247-0586 is a Gearshaft,helical, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-247-0586 has 1 manufacturer part number on file: 1395AS274 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 1395AS274: Shaft Type: SHOULDERED; Shaft Material: STEEL COMP 4340 OR STEEL COMP 4130 AND STEEL COMP 4140; Helix Angle: 16.8889 DEGREES; Shaft Largest Diameter: 0.960 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.
NSN 3040-01-247-0586 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.