The Gearshaft,helical, cataloged under National Stock Number 3040-01-394-0556, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Timken Gears & Services Inc. Div Philadelphia Gear. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-01-394-0556 |
| Primary Part Number | 01070-0281ITEM6-1 |
| Item Name | Gearshaft,helical |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Timken Gears & Services Inc. Div Philadelphia Gear |
| Status | ACTIVE |
| Shaft Type | SHOULDERED |
| Shaft Material | STEEL COMP 4320H |
| Helix Angle | 37.7186 DEGREES |
| Shaft Largest Diameter | 2.378 INCHES NOMINAL IN |
| Shaft End Size | 1.939 INCHES IN |
| Teeth Quantity | 21 |
| Tooth Direction | RIGHT |
| Diametral Pitch | 8 |
| Teeth Type | SINGLE HELIX |
| Gear Outside Diameter | 3.065 INCHES NOMINAL IN |
| Longer Shaft Segment Length | 3.620 INCHES NOMINAL IN |
| Hardness Rating | 58.0 ROCKWELL C NOMINAL OVERALL |
| Gear Material | STEEL COMP 4320H |
| Shaft Length | 1.380 INCHES MINIMUM AND 3.620 INCHES MAXIMUM IN |
| Shaft End Type | PLAIN |
| Gear Location on Shaft | OFF CENTER BETWEEN ENDS OF SHAFT |
| Pressure Angle | 20.0000 DEGREES |
| Face Width | 3.880 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 |
|---|---|
| 01070-0281ITEM6-1 | Timken Gears & Services Inc. Div Philadelphia Gear (USA) |
| Reference | Meaning |
|---|---|
| 50425-1579 | 3/9 Design control — primary reference Timken Gears & Services Inc. Div Philadelphia Gear |
NSN 3040-01-394-0556 is a Gearshaft,helical, manufactured by Timken Gears & Services Inc. Div Philadelphia Gear, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-394-0556 has 1 manufacturer part number on file: 01070-0281ITEM6-1 (Timken Gears & Services Inc. Div Philadelphia Gear).
Key specifications for 01070-0281ITEM6-1: Shaft Type: SHOULDERED; Shaft Material: STEEL COMP 4320H; Helix Angle: 37.7186 DEGREES; Shaft Largest Diameter: 2.378 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.