The Gearshaft,spur, cataloged under National Stock Number 3040-00-689-3221, 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13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-689-3221 |
| Item Name | Gearshaft,spur |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Shaft Type | SHOULDERED |
| Shaft Material | STEEL COMP 4320H |
| Shaft Largest Diameter | 2.250 INCHES NOMINAL IN |
| Shaft End Size | 1.919 INCHES AND 1.969 INCHES IN |
| Teeth Quantity | 34 |
| Diametral Pitch | 6 |
| Gear Outside Diameter | 5.990 INCHES MINIMUM AND 6.000 INCHES MAXIMUM IN |
| Longer Shaft Segment Length | 2.2800 INCHES NOMINAL IN |
| Gear Material | STEEL COMP 4320H |
| Shaft End Type | SPLINED INVOLUTE AND PLAIN |
| Gear Location on Shaft | OFF CENTER BETWEEN ENDS OF SHAFT |
| Pressure Angle | 25.0000 DEGREES |
| Face Width | 0.690 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 |
|---|---|
| 2587622 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-00-689-3221 is a Gearshaft,spur, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-00-689-3221: Shaft Type: SHOULDERED; Shaft Material: STEEL COMP 4320H; Shaft Largest Diameter: 2.250 INCHES NOMINAL IN; Shaft End Size: 1.919 INCHES AND 1.969 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.