The Gearshaft,spur, cataloged under National Stock Number 3040-01-237-6386, 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13 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3040-01-237-6386 |
| Item Name | Gearshaft,spur |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Shaft Type | STRAIGHT |
| Shaft Material | STEEL COMP 4140 |
| Shaft End Size | 1.372 INCHES IN |
| Shaft Diameter | 1.372 INCHES NOMINAL IN |
| Teeth Quantity | 18 |
| Diametral Pitch | 8 |
| Gear Outside Diameter | 2.450 INCHES NOMINAL IN |
| Longer Shaft Segment Length | 10.125 INCHES NOMINAL IN |
| Gear Material | STEEL COMP 4140 |
| Shaft End Type | CROSS DRILLED UNTHREADED, SPLINED INVOLUTE AND SPLINED INVOLUTE |
| Gear Location on Shaft | OFF CENTER BETWEEN ENDS OF SHAFT |
| Pressure Angle | 20.0000 DEGREES |
| Face Width | 1.500 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 |
|---|---|
| SSN637-709-214435 | D/9 Drawing number reference only U.S. Government activity |
| 77832-60X3 | D/9 Drawing number reference only U.S. Government activity |
| SSN637-709-214435 PIECE 20 | 5/2 Secondary reference U.S. Government activity |
| 77832-60X3 PIECE 20 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-237-6386 is a Gearshaft,spur, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-237-6386: Shaft Type: STRAIGHT; Shaft Material: STEEL COMP 4140; Shaft End Size: 1.372 INCHES IN; Shaft Diameter: 1.372 INCHES NOMINAL 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.