The Gearshaft,helical, cataloged under National Stock Number 3040-01-357-0539, 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 8 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 | 3040-01-357-0539 |
| Primary Part Number | B-252137 |
| 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 4340 |
| Teeth Type | SINGLE HELIX |
| Gear Outside Diameter | 5.276 INCHES NOMINAL IN |
| Gear Material | STEEL COMP 4340 |
| Shaft End Type | CROSS DRILLED UNTHREADED AND PLAIN |
| Gear Location on Shaft | OFF CENTER BETWEEN ENDS OF SHAFT |
| Face Width | 7.250 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 |
|---|---|
| B-252137 PRIMARY | Timken Gears & Services Inc. Div Philadelphia Gear (USA) |
NSN 3040-01-357-0539 is a Gearshaft,helical, manufactured by Timken Gears & Services Inc. Div Philadelphia Gear, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-357-0539 has 1 manufacturer part number on file: B-252137 (Timken Gears & Services Inc. Div Philadelphia Gear).
Key specifications for B-252137: Shaft Type: SHOULDERED; Shaft Material: STEEL COMP 4340; Teeth Type: SINGLE HELIX; Gear Outside Diameter: 5.276 INCHES NOMINAL IN. 8 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.