The Gearshaft,spur, cataloged under National Stock Number 3040-01-434-7837, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-434-7837 |
| Item Name | Gearshaft,spur |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Shaft Type | SHOULDERED |
| Shaft Material | STEEL COMP 322 |
| Shaft Largest Diameter | 2.2496 INCHES NOMINAL IN |
| Shaft End Size | 1.6880 INCHES AND 1.9860 INCHES IN |
| Teeth Quantity | 22 |
| Diametral Pitch | 4 |
| Gear Outside Diameter | 5.9950 INCHES NOMINAL IN |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM TEETH |
| Gear Material | STEEL COMP 322 |
| Shaft End Type | HEXAGONAL AND SPLINED STRAIGHT |
| Gear Location on Shaft | MIDPOINT BETWEEN ENDS OF SHAFT |
| Pressure Angle | 20.0000 DEGREES |
| Face Width | 2.5000 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 |
| Reference | Meaning |
|---|---|
| H554AX001 FIND NO. 59 | 5/2 Secondary reference U.S. Government activity |
| 117754 | 5/2 Secondary reference U.S. Government activity |
| H544AX001 | D/9 Drawing number reference only U.S. Government activity |
| C554AX060 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-434-7837 is a Gearshaft,spur, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-434-7837: Shaft Type: SHOULDERED; Shaft Material: STEEL COMP 322; Shaft Largest Diameter: 2.2496 INCHES NOMINAL IN; Shaft End Size: 1.6880 INCHES AND 1.9860 INCHES IN. 13 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.